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TABLE 1 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 1 Character State of the Carotid Circulatory Pattern in Species-group Taxa of Oecomys (Arranged alphabetically by valid species and chronologically by attributed synonyms.)<table><thead><tr><th>Species-group Taxa Type Localities</th><th></th></tr><tr><th colspan="2">(Holotypes) Complete a Derived b</th></tr></thead><tbody><tr><th>O. auyentepui Tate, 1939 Mt. Auyan-tepui, Venezuela (AMNH 131156)</th><td>+</td></tr><tr><th>O. bicolor (Tomes, 1860) Gualaquiza, Ecuador (BMNH 7.1.1.96)</th><td>+</td></tr><tr><th>dryas Thomas, 1900 Paramba, Ecuador (BMNH 1899.12.5.4)</th><td>+</td></tr><tr><th>benevolens Thomas, 1901 Chimate, Bolivia (BMNH 1.2.1.14)</th><td>+</td></tr><tr><th>rosilla Thomas, 1904 La Union, Venezuela (BMNH 1904.5.7.37)</th><td>+</td></tr><tr><th>nitedulus Thomas, 1910 Essequibo River, Guyana (BMNH 1906.4.8.31)</th><td>+</td></tr><tr><th>florenciae Allen, 1916 Florencia, Colombia AMNH 33863</th><td>+</td></tr><tr><th>milleri Allen, 1916 Barão de Malgaço, Brazil (AMNH 37117)</th><td>+</td></tr><tr><th>trabeatus Allen and Barbour, 1923 Río Jesusito, Panama (MCZ 19837)</th><td>+</td></tr><tr><th>endersi Goldman, 1933 Barro Colorado Island, Panama (UMMZ 64931)</th><td>+</td></tr><tr><th>phelpsi Tate, 1939c Mt. Auyan-Tepui, Venezuela (AMNH 131164)</th><td>+</td></tr><tr><th>occidentalis Hershkovitz, 1960 Paramba, Ecuador (BMNH 1899.12.5.4)</th><td>+</td></tr><tr><th>O. catherinae Thomas, 1909 Joinville, Brazil (BMNH 9.11.19.24)</th><td>+</td></tr><tr><th>O. cleberi Locks, 1981 Fazenda Água Limpa, Brazil (MN 24131)</th><td>+</td></tr><tr><th>(Holotypes)</th><td>Complete a Derived b</td></tr><tr><th>O. concolor (Wagner, 1845) Mouth of Rio Curicuriare, Brazil (NMW B482)</th><td>+</td></tr><tr><th>marmosurus Thomas, 1899 Maipures, Colombia (BMNH 1899.9.11.38)</th><td>+</td></tr><tr><th>O. flavicans (Thomas, 1894) Mérida, Venezuela (BMNH 1894.9.25.14)</th><td>+</td></tr><tr><th>illectus Bangs, 1898 Pueblo Viejo, Colombia (MCZ 8101)</th><td>+</td></tr><tr><th>mincae Allen, 1913 Minca, Colombia (AMNH 15332)</th><td>+</td></tr><tr><th>O. mamorae (Thomas, 1906b) Mosetenes, Bolivia (BMNH 1900.8.3.21)</th><td>+</td></tr><tr><th>O. paricola (Thomas, 1904) Igarapé Assu, Brazil (BMNH 1904.7.4.63)</th><td>+</td></tr><tr><th>O. phaeotis Thomas, 1901 Sagrario, Peru (BMNH 1901.1.1.23)</th><td>+</td></tr><tr><th>O. rex Thomas, 1910 Supenaam River, Guyana (BMNH 1910.9.29.17)</th><td>+</td></tr><tr><th>O. roberti (Thomas, 1904) Santa Anna da Chapada, Brazil (BMNH 1903.7.7.67)</th><td>+</td></tr><tr><th>tapajinus Thomas, 1909 Santa Rosa, Brazil (BMNH 1909.3.9.9)</th><td>+</td></tr><tr><th>guianae Thomas, 1910 Supenaam River, Guyana (BMNH 1910.5.4.23)</th><td>+</td></tr><tr><th>O. rutilus Anthony, 1921 Kartabo, Guyana (AMNH 42910)</th><td>+</td></tr><tr><th>O. speciosus (Allen and Chapman, 1893) Princes Town, Trinidad (AMNH 5942/4672)</th><td>+</td></tr><tr><th>(Holotypes)</th><td>Complete a Derived b</td></tr><tr><th>trichurus Allen, 1899 El Libano, Colombia (AMNH 15328)</th><td>+</td></tr><tr><th>caicarae Allen, 1913 Caicara, Venezuela (AMNH 29875)</th><td>+</td></tr><tr><th>O. superans Thomas, 1911 Canelos, Ecuador (BMNH 1911.7.19.12)</th><td>+</td></tr><tr><th>palmeri Thomas, 1911 Canelos, Ecuador (BMNH 1911.7.19.13)</th><td>+</td></tr><tr><th>melleus Anthony, 1924 Zamora, Ecuador (AMNH 36560)</th><td>+</td></tr><tr><th>O. trinitatis (Allen and Chapman, 1893) Princes Town, Trinidad (AMNH 5943/4673)</th><td>+</td></tr><tr><th>subluteus Thomas, 1898 Cundinamarca, Colombia (BMNH 1898.7.3.2)</th><td>+</td></tr><tr><th>fulviventer Allen, 1899 Quebrada Seca, Venezuela (AMNH 14735)</th><td>+</td></tr><tr><th>palmarius Allen, 1899 Quebrada Seca, Venezuela (AMNH 14733)</th><td>+</td></tr><tr><th>tectus Thomas, 1901 Bugaba, Panama (BMNH 1900.7.11.43)</th><td>+</td></tr><tr><th>klagesi Allen, 1904 El Yagual, Venezuela (AMNH 16966)</th><td>+</td></tr><tr><th>frontalis Goldman, 1912 Corazal, Panama (USNM 171531)</th><td>+</td></tr><tr><th>helvolus Allen, 1913 Villavicencio, Colombia (AMNH 34578)</th><td>+</td></tr><tr><th>vicencianus Allen, 1913 Villavicencio, Colombia (AMNH 34584)</th><td>+</td></tr><tr><th>Species-group Taxa</th><td></td></tr><tr><th>Type Localities</th><td></td></tr><tr><th>(Holotypes)</th><td>Complete a Derived b</td></tr><tr><th>osgoodi Thomas, 1924</th><td>+</td></tr><tr><th>Moyobamba, Peru</th><td></td></tr><tr><th>(BMNH 1924.7.11.16)</th><td></td></tr><tr><th>splendens Hayman, 1938</th><td>+</td></tr><tr><th>Mayaro, Trinidad</th><td></td></tr><tr><th>(BMNH 1937.11.11.2)</th><td></td></tr></tbody></table>a Complete: supraorbital and infraorbital branches of the stapedial artery form major blood supply to the orbitofacial region; sphenofrontal and stapedial foramina present; vascular grooves cross both the inner surface of the squamosal and alisphenoid bones and the posterolateral corner of the parapterygoid fossa; posterior opening to alisphenoid canal large.b Derived: supraorbital and infraorbital branches absent, distal orbitofacial circulation arising from secondary anastomosis to the internal carotid; sphenofrontal foramen absent, stapedial foramen absent or minute; no vascular grooves found on the inner surface of the squamosal and alisphenoid bones or on the posterolateral corner of the parapterygoid fossa; posterior opening to alisphenoid canal irregularly formed or occluded; secondary osseous groove internally crosses the roof of the parapterygoid fossa.c Based on the type as restricted by Musser and Patton (1989).

TABLE 7 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 7 External and Craniodental Measurements (in mm) of the Type Specimens of Hesperomys concolor Wagner, Rhipidomys marmosurus Thomas, and Oryzomys mamorae Thomas<table><thead><tr><th></th><th>concolor</th><th>marmosurus a</th><th>mamorae b</th></tr></thead><tbody><tr><th>Variable</th><td>NMW B482</td><td>BMNH 1899.9.11.38</td><td>BMNH 1900.8.3.21</td></tr><tr><th>HBL</th><td>—</td><td>124</td><td>130</td></tr><tr><th>TL</th><td>—</td><td>157</td><td>168</td></tr><tr><th>HFL</th><td>—</td><td>26 (28)</td><td>27</td></tr><tr><th>EL</th><td>—</td><td>18</td><td>20</td></tr><tr><th>ONL</th><td>29.2</td><td>33.8</td><td>33.1</td></tr><tr><th>ZB</th><td>15.9</td><td>—</td><td>17.5</td></tr><tr><th>BBC</th><td>13.3</td><td>12.6</td><td>12.6</td></tr><tr><th>DBC</th><td>—</td><td>9.1</td><td>9.2</td></tr><tr><th>IOB</th><td>5.0</td><td>5.8</td><td>5.1</td></tr><tr><th>BOC</th><td>—</td><td>6.9</td><td>7.3</td></tr><tr><th>LR</th><td>7.7</td><td>9.4</td><td>8.9</td></tr><tr><th>BR</th><td>5.7</td><td>6.2</td><td>4.8</td></tr><tr><th>PPL</th><td>—</td><td>11.3</td><td>10.8</td></tr><tr><th>BPL</th><td>6.0</td><td>6.6</td><td>6.2</td></tr><tr><th>LIF</th><td>4.8</td><td>5.4</td><td>5.9</td></tr><tr><th>BIF</th><td>2.4</td><td>2.5</td><td>2.7</td></tr><tr><th>LD</th><td>7.4</td><td>8.2</td><td>7.9</td></tr><tr><th>BBP</th><td>5.8</td><td>6.3</td><td>6.4</td></tr><tr><th>BZP</th><td>2.9</td><td>3.7</td><td>3.4</td></tr><tr><th>CLM</th><td>4.8</td><td>4.9</td><td>5.2</td></tr><tr><th>WM1</th><td>1.3</td><td>1.3</td><td>1.5</td></tr></tbody></table>a External data as given by Thomas (1899).b External data as given by Thomas (1906b).

Fig. 14 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 14. Maximum-parsimony topology of the phylogenetic analysis of all known species of genus Cerradomys, employing DNA sequence data of the mitochondrial gene cytochrome b. Numbers near nodes represent bootstrap values obtained on the basis of 1,000 replicates.

Fig. 9 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 9. Dorsal, ventral, and lateral cranial views of the holotype of Cerradomys vivoi (MN 35898; CIL,

Fig. 5 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 5. Lateral cranial and mandible views of three species of Cerradomys. Top: C. langguthi from Corredor São João—Fazenda Pacatuba, Paraíba (MN 69786; CIL, 32.1 mm). Middle: C. vivoi from Fazenda Canoas, Juramento, Minas Gerais (MN 61663; CIL, 32.92 mm). Bottom: C. subflavus from Parque Nacional da Serra do Cipó, Minas Gerais (MN 31393; CIL, 32.41 mm).

Fig. 1 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 1. Known collection localities of the six species of Cerradomys in South America. The area delimited by a square is detailed in figure 2. See gazetteer (appendix 1), where numbers are associated with collection localitites. Brazilian states acronyms: AL, Alagoas; BA, Bahia; CE, Ceará; DF, Distrito Federal; Go, Goiás; MA, Maranhão; MT, Mato Grosso; MS, Mato Grosso do Sul; MG, Minas Gerais; PB, Paraíba; PE, Pernambuco; PI, Piauí; SP, São Paulo; SE, Sergipe; TO, Tocantins.

Fig. 10 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 10. Karyotypes of female C. vivoi (MN 63377) from Caetite´, Bahia, Brazil (above) and of male C. subflavus (LV–MW 13) from Nova Viçosa, Bahia, Brazil (below); both prepared in conventional stain.

Fig 13 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig 13. Individual specimen scores based on log-transformed values of 15 cranial measurements and projected onto the first and the second canonical variates derived from discriminant function analysis of the three species of genus Cerradomys: C. subflavus, C. vivoi, and C. langguthi. Results of discriminant analysis are in table 5.

Fig. 12 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 12. Individual specimen scores based on log-transformed values of 15 cranial measurements, projected onto the first and second principal components extracted from analysis of adult specimens of three species of genus Cerradomys: C. subflavus, C. vivoi, and C. langguthi. Results of principal components analysis are in table 4.

Fig. 8 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 8. Dorsal, ventral, and lateral cranial views of holotype of Cerradomys langguthi (MN 69786; CIL,

Fig. 7 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 7. Ventral (left) and lateral (right) views of the glans penis of Cerradomys vivoi from Jequitinhonha, Minas Gerais (UFMG 1458). Bony baculum length: 8.5 mm.

Fig. 11. G in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 11. G-band karyotype of the holotype of C. vivoi (male MN 35898) from Parque Zoobotânico da Comissão Executiva do Plano da Lavoura Cacaueira (CEPLAC), Itabuna, Bahia, Brazil.

Fig. 6 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 6. Lateral cranial and mandible views of three species of Cerradomys. Top: C. marinhus from Fazenda Sertão do Formoso, Jaborandi (MN 63834; CIL, 33.39 mm). Middle: C. maracajuensis from Maracaju, Mato Grosso do Sul (MN 4376; CIL, 30.83 mm). Bottom: C. scotti from Estação Ecológica Santa Bárbara, São Paulo (MZUSP APC 1157; CIL, 31.38 mm).

Fig. 4 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 4. Dorsal and ventral cranial views of three species of Cerradomys. Left: C. marinhus from Fazenda Sertão do Formoso, Jaborandi (MN 63834; CIL, 33.39 mm). Middle: C. maracajuensis from Maracaju, Mato Grosso do Sul (MN 4376; CIL, 30.83 mm). Right: C. scotti from Estação Ecológica Santa Bárbara, São Paulo (MZUSP APC 1157; CIL, 31.38 mm).

Fig. 3 in Systematic Review of Genus Cerradomys Weksler, Percequillo and Voss, 2006 (Rodentia: Cricetidae: Sigmodontinae: Oryzomyini), with Description of Two New Species from Eastern Brazil

Fig. 3. Dorsal and ventral cranial views of three species of Cerradomys. Left: C. langguthi from Corredor São João—Fazenda Pacatuba, Paraíba (MN 69786; CIL, 32.1 mm). Middle: C. vivoi from Fazenda Canoas, Juramento, Minas Gerais (MN 61663; CIL, 32.92 mm). Right: C. subflavus from Parque Nacional da Serra do Cipó, Minas Gerais (MN 31393; CIL, 32.41 mm).

TABLE 4 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 4 External and Craniodental Measurements for the Type Series of O. sydandersoni, New Species, and Samples of O. concolor and O. mamorae (Sample statistics include the mean, ± 1 standard deviation, and the observed range).<table><thead><tr><th></th><th>O. sydandersoni Holotype</th><th>O. sydandersoni El Refugio</th><th>O. concolor Amazonas, Brazil</th><th>O. mamorae Beni, Bolivia</th></tr></thead><tbody><tr><th>Variable</th><td>(MNK 2679)</td><td>(N = 21–23)</td><td>(N = 23, 24)</td><td>(N = 14–16)</td></tr><tr><th>TOTL</th><td>242</td><td>257.9 ± 16.7 233–290</td><td>273.2 ± 11.2 255–296</td><td>296.0 ± 18.3 270–230</td></tr><tr><th>HBL</th><td>118</td><td>125.0 ± 12.2 109–166</td><td>125.4 ± 5.8 115–141</td><td>139.8 ± 13.1 120–170</td></tr><tr><th>TL</th><td>124</td><td>132.8 ± 8.4 115–145</td><td>147.9 ± 6.9 137–160</td><td>158.5 ± 10.7 144–180</td></tr><tr><th>HFL</th><td>23</td><td>24.1 ± 1.7 21–27</td><td>27.4 ± 1.1 26–29</td><td>27.3 ± 1.8 23–30</td></tr><tr><th>EL</th><td>17</td><td>16.4 ± 1.1 15–19</td><td>17.1 ± 1.3 15–20</td><td>18.0 ± 1.2 17–20</td></tr><tr><th>WT</th><td>45</td><td>44.9 ± 7.8 30–57</td><td>57.8 ± 9.5 41–80</td><td>73.9 ± 29.9 48–120</td></tr><tr><th>ONL</th><td>30.7</td><td>29.8 ± 1.2 27.7–32.0</td><td>32.2 ± 0.9 30.2–34.3</td><td>32.5 ± 1.2 30.9–34.5</td></tr><tr><th>ZB</th><td>16.7</td><td>16.5 ± 0.6 15.3–17.6</td><td>17.7 ± 0.6 16.6–19.1</td><td>17.1 ± 0.7 15.6–18.1</td></tr><tr><th>BBC</th><td>11.8</td><td>11.8 ± 0.3 11.3–12.4</td><td>12.5 ± 0.4 11.8–13.3</td><td>12.6 ± 0.3 12.0–13.2</td></tr><tr><th>DBC</th><td>9.5</td><td>9.1 ± 0.3 8.5–9.7</td><td>9.4 ± 0.3 8.8–9.9</td><td>9.3 ± 0.5 7.7–10.0</td></tr><tr><th>BOC</th><td>6.6</td><td>6.5 ± 0.1 6.3–6.8</td><td>6.8 ± 0.2 6.4–7.3</td><td>7.3 ± 0.4 6.6–7.8</td></tr><tr><th>IOB</th><td>5.4</td><td>5.3 ± 0.3 4.8–5.7</td><td>5.5 ± 0.2 5.1–6.0</td><td>4.9 ± 0.2 4.6–5.2</td></tr><tr><th>LR</th><td>8.2</td><td>8.4 ± 0.5 7.5–9.1</td><td>9.1 ± 0.4 8.4–9.9</td><td>9.1 ± 0.4 8.6–10.0</td></tr><tr><th>BR</th><td>5.4</td><td>5.5 ± 0.3 4.7–6.2</td><td>6.1 ± 0.3 5.5–6.7</td><td>5.8 ± 0.3 5.4–6.2</td></tr><tr><th>PPL</th><td>10.4</td><td>10.3 ± 0.5 9.2–11.4</td><td>10.6 ± 0.4 9.9–11.4</td><td>11.3 ± 0.5 10.4–12.0</td></tr><tr><th>BPL</th><td>5.7</td><td>5.6 ± 0.3 4.9–6.0</td><td>6.6 ± 0.3 5.9–7.3</td><td>6.1 ± 0.4 5.4–6.9</td></tr><tr><th>LIF</th><td>5.6</td><td>5.4 ± 0.3 4.9–5.8</td><td>5.3 ± 0.3 4.5–6.2</td><td>5.8 ± 0.3 5.3–6.3</td></tr><tr><th>BIF</th><td>2.6</td><td>2.6 ± 0.2 2.2–2.8</td><td>2.3 ± 0.2 1.8–2.7</td><td>2.5 ± 0.3 2.0–2.9</td></tr><tr><th>LD</th><td>7.4</td><td>7.7 ± 0.5 6.8–8.7</td><td>8.1 ± 0.4 7.6–9.1</td><td>8.0 ± 0.5 7.2–8.7</td></tr><tr><th>BBP</th><td>5.7</td><td>5.7 ± 0.2 5.2–6.2</td><td>6.1 ± 0.2 5.7–6.4</td><td>5.9 ± 0.3 5.4–6.4</td></tr><tr><th>Variable</th><td>(MNK 2679)</td><td>(N = 21–23)</td><td>(N = 23, 24)</td><td>(N = 14–16)</td></tr><tr><th>BZP</th><td>3.2</td><td>2.9 ± 0.2 2.5–3.2</td><td>3.3 ± 0.2 2.9–3.6</td><td>3.4 ± 0.3 2.8–3.9</td></tr><tr><th>CLM</th><td>4.80</td><td>4.57 ± 0.14 4.35–4.90</td><td>4.93 ± 0.13 4.70–5.10</td><td>5.04 ± 0.21 4.70–5.40</td></tr><tr><th>WM1</th><td>1.40</td><td>1.32 ± 0.05 1.25–1.40</td><td>1.40 ± 0.06 1.30–1.50</td><td>1.39 ± 0.09 1.30–1.50</td></tr></tbody></table>

TABLE 6 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 6 External and Craniodental Measurements of the Four Species of Oecomys Collected in the Parc Nacional Noel Kempff Mercado, Eastern Bolivia (Sample statistics include the mean, ± 1 standard deviation, and the observed range.)<table><thead><tr><th>Variable</th><th>O. bicolor a (N = 7, 8)</th><th>O. sydandersoni (N = 21–23)</th><th>O. roberti b (N = 4, 6)</th><th>O. trinitatis c (N = 3, 4)</th></tr></thead><tbody><tr><th>TOTL</th><td>211.8 ± 23.4 172–240</td><td>257.9 ± 16.7 233–290</td><td>273.5 ± 22.3 237–295</td><td>260.7 ± 17.6 241–275</td></tr><tr><th>TL</th><td>103.9 ± 10.8 87–122</td><td>132.8 ± 8.4 115–145</td><td>142.2 ± 13.1 127–160</td><td>135.3 ± 3.8 131–138</td></tr><tr><th>HFL</th><td>19.4 ± 1.0 18–21</td><td>24.1 ± 1.7 21–27</td><td>25.7 ± 1.7 24–28</td><td>26.0 ± 1.1 25–27</td></tr><tr><th>EL</th><td>14.5 ± 0.5 14–15</td><td>16.4 ± 1.1 15–19</td><td>15.8 ± 1.0 14–17</td><td>17.3 ± 1.7 15–19</td></tr><tr><th>WT</th><td>29.9 ± 8.1 20–43</td><td>44.9 ± 7.8 30–57</td><td>50.5 ± 18.1 34–86</td><td>45.8 ± 8.7 33–52</td></tr><tr><th>ONL</th><td>26.8 ± 1.3 24.6–27.8</td><td>29.8 ± 1.2 27.7–32.0</td><td>31.9 ± 1.5 29.6–33.7</td><td>30.7 ± 1.6 28.5–32.0</td></tr><tr><th>ZB</th><td>14.1 ± 0.8 12.9–15.1</td><td>16.5 ± 0.6 15.3–17.6</td><td>16.7 ± 0.9 15.1–17.6</td><td>16.1 ± 0.9 15.1–17.3</td></tr><tr><th>BBC</th><td>11.1 ± 0.4 10.5–11.7</td><td>11.8 ± 0.3 11.3–12.4</td><td>12.1 ± 0.2 11.9–12.4</td><td>11.8 ± 0.4 11.4–12.3</td></tr><tr><th>DBC</th><td>8.4 ± 0.2 8.1–8.7</td><td>9.1 ± 0.3 8.5–9.7</td><td>9.1 ± 0.5 8.3–9.6</td><td>9.0 ± 0.2 8.9–9.3</td></tr><tr><th>BOC</th><td>5.9 ± 0.2 5.7–6.3</td><td>6.5 ± 0.1 6.3–6.8</td><td>6.6 ± 0.1 6.4–6.7</td><td>6.5 ± 0.1 6.4–6.6</td></tr><tr><th>IOB</th><td>4.7 ± 0.2 4.3–4.9</td><td>5.3 ± 0.3 4.8–5.7</td><td>5.5 ± 0.2 5.2–5.7</td><td>5.1 ± 0.3 4.9–5.6</td></tr><tr><th>LR</th><td>7.7 ± 0.6 6.6–8.3</td><td>8.4 ± 0.5 7.5–9.1</td><td>9.7 ± 0.4 9.2–10.3</td><td>9.5 ± 0.6 8.6–9.9</td></tr><tr><th>BR</th><td>4.9 ± 0.3 4.4–5.2</td><td>5.5 ± 0.3 4.7–6.2</td><td>5.9 ± 0.2 5.7–6.1</td><td>5.9 ± 0.5 5.2–6.4</td></tr><tr><th>PPL</th><td>9.4 ± 0.7 8.1–9.9</td><td>10.3 ± 0.5 9.2–11.4</td><td>11.1 ± 1.0 9.6–12.7</td><td>10.4 ± 0.6 9.7–11.0</td></tr><tr><th>BPL</th><td>4.4 ± 0.4 3.8–4.9</td><td>5.6 ± 0.3 4.9–6.0</td><td>6.3 ± 0.2 6.1–6.7</td><td>6.3 ± 0.5 5.7–6.8</td></tr><tr><th>LIF</th><td>4.5 ± 0.3 3.8–4.9</td><td>5.4 ± 0.3 4.9–5.8</td><td>5.2 ± 0.4 4.5–5.7</td><td>5.1 ± 0.3 4.7–5.4</td></tr><tr><th>BIF</th><td>2.1 ± 0.1 1.9–2.2</td><td>2.6 ± 0.2 2.2–2.8</td><td>2.5 ± 0.2 2.3–2.8</td><td>2.3 ± 0.1 2.2–2.4</td></tr><tr><th>LD</th><td>6.7 ± 0.6 5.7–7.3</td><td>7.7 ± 0.5 6.8–8.7</td><td>8.3 ± 0.4 7.7–8.9</td><td>7.6 ± 0.6 6.9–8.2</td></tr><tr><th>BBP</th><td>4.9 ± 0.3 4.5–5.2</td><td>5.7 ± 0.2 5.2–6.2</td><td>5.8 ± 0.2 5.6–6.1</td><td>5.9 ± 0.3 5.5–6.1</td></tr><tr><th>BZP</th><td>2.2 ± 0.3 1.8–2.7</td><td>2.9 ± 0.2 2.5–3.2</td><td>2.8 ± 0.4 2.1–3.3</td><td>3.3 ± 0.3 3.0–3.7</td></tr><tr><th>CLM</th><td>3.75 ± 0.14 3.57–3.93</td><td>4.57 ± 0.14 4.35–4.90</td><td>4.76 ± 0.23 4.48–5.15</td><td>4.80 ± 0.18 4.64–5.05</td></tr><tr><th></th><td>O. bicolor a</td><td>O. sydandersoni</td><td>O. roberti b</td><td>O. trinitatis c</td></tr><tr><th>Variable</th><td>(N = 7, 8)</td><td>(N = 21–23)</td><td>(N = 4, 6)</td><td>(N = 3, 4)</td></tr><tr><th>WM1</th><td>1.09 ± 0.04</td><td>1.32 ± 0.05</td><td>1.36 ± 0.06</td><td>1.41 ± 0.08</td></tr><tr><th></th><td>1.05–1.17</td><td>1.25–1.40</td><td>1.28–1.46</td><td>1.35–1.53</td></tr></tbody></table>a Bolivia, Santa Cruz, Parque Nacional Noel Kempff Mercado, 2.5 km NE El Refugio (MNK-LHE 1561; MNK-VCC 13, 20, 132; USNM 584546–584549).b Bolivia, Santa Cruz, Parque Nacional Noel Kempff Mercado, 2.5 km NE El Refugio (MNK-LHE 1658, 1669, 1681, 1685; MNK-VCC 9; USNM 584550, 584551).c Bolivia, Santa Cruz, Parque Nacional Noel Kempff Mercado, Los Fierros (MNK-LHE 1565, 1682; USNM 584552, 584553).

TABLE 2 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 2 Results of Principal Components Analyses Comparing Adult Oecomys sp. novum with O. concolor and O. mamorae (Based on 17 log-transformed craniodental variables; see Materials and Methods and fig. 2.)<table><thead><tr><th></th><th colspan="2">O. sp. novum + O. concolor</th><th colspan="2">O. sp. novum + O. mamorae</th></tr></thead><tbody><tr><th></th><td colspan="2">Correlations</td><td colspan="2">Correlations</td></tr><tr><th>Variable</th><td>PC I</td><td>PC II</td><td>PC I</td><td>PC II</td></tr><tr><th>ONL</th><td>0.96***</td><td>0.10</td><td>0.97***</td><td>- 0.07</td></tr><tr><th>ZB</th><td>0.86***</td><td>0.13</td><td>0.83***</td><td>0.29</td></tr><tr><th>BBC</th><td>0.80***</td><td>0.02</td><td>0.74***</td><td>- 0.15</td></tr><tr><th>DBC</th><td>0.53***</td><td>0.15</td><td>0.32</td><td>0.26</td></tr><tr><th>BOC</th><td>0.63***</td><td>- 0.24</td><td>0.75***</td><td>- 0.28</td></tr><tr><th>IOB</th><td>0.54***</td><td>0.13</td><td>- 0.17</td><td>0.76***</td></tr><tr><th>LR</th><td>0.82***</td><td>0.26</td><td>0.84***</td><td>- 0.05</td></tr><tr><th>BR</th><td>0.84***</td><td>- 0.04</td><td>0.74***</td><td>0.06</td></tr><tr><th>BZP</th><td>0.76***</td><td>0.11</td><td>0.88***</td><td>- 0.03</td></tr><tr><th>PPL</th><td>0.73***</td><td>0.41**</td><td>0.91***</td><td>- 0.06</td></tr><tr><th>BPL</th><td>0.87***</td><td>- 0.29*</td><td>0.71***</td><td>- 0.14</td></tr><tr><th>LD</th><td>0.84***</td><td>0.35**</td><td>0.85***</td><td>0.41**</td></tr><tr><th>LIF</th><td>0.35**</td><td>0.72***</td><td>0.81***</td><td>- 0.09</td></tr><tr><th>BIF</th><td>- 0.18</td><td>0.91***</td><td>0.36</td><td>0.82***</td></tr><tr><th>BBP</th><td>0.82***</td><td>0.11</td><td>0.78***</td><td>0.07</td></tr><tr><th>CLM</th><td>0.72***</td><td>- 0.40**</td><td>0.59***</td><td>- 0.69***</td></tr><tr><th>WM1</th><td>0.64***</td><td>- 0.37**</td><td>0.38</td><td>- 0.58***</td></tr><tr><th>Eigenvalue</th><td>0.033</td><td>0.011</td><td>0.045</td><td>0.012</td></tr><tr><th>% Variance</th><td>53.5</td><td>17.5</td><td>55.8</td><td>14.9</td></tr></tbody></table>* = P # 0.05; ** = P # 0.01; *** = P # 0.001.

TABLE 5 in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

TABLE 5 Occurrence of Alisphenoid Struts (- / - = struts absent both sides; - /+ = strut present on one side; +/+ = struts present both sides.)<table><thead><tr><th></th><th colspan="3">Alisphenoid Struts</th></tr></thead><tbody><tr><th>Species and Country</th><td>- / -</td><td>- /+</td><td>+/+</td></tr><tr><th colspan="4">O. concolor</th></tr><tr><th>Brazil Colombia Venezuela Totals</th><td>1 0 0 1</td><td>0 1 0 1</td><td>25 0 18 43</td></tr><tr><th colspan="4">O. mamorae</th></tr><tr><th>Bolivia Brazil Paraguay Totals</th><td>29 1 7 37</td><td>1 0 0 1</td><td>0 0 0 0</td></tr><tr><th colspan="4">O. sydandersoni</th></tr><tr><th>Bolivia</th><td>1</td><td>2</td><td>23</td></tr></tbody></table>

Natterer collected this species at the Curicuriari River in northwestern Brazil. in A New Species of the Rodent Genus Oecomys (Cricetidae: Sigmodontinae: Oryzomyini) from Eastern Bolivia, with Emended Definitions of O. concolor (Wagner) and O. mamorae (Thomas)

Natterer collected this species at the Curicuriari River in northwestern Brazil.<table><thead><tr><th></th><th>H. concolor</th><th></th><th>H. Anguya</th></tr></thead><tbody><tr><th>Body</th><td>4 " 10 "</td><td>|</td><td>5 " 8 "</td></tr><tr><th>Tail</th><td>4 9</td><td>|</td><td>5 6</td></tr><tr><th>Ear</th><td>0 6 2/2 [sic]</td><td>|</td><td>0 8</td></tr><tr><th>Hindfoot</th><td>1 0</td><td>|</td><td>1 3</td></tr></tbody></table>Natterer collected this species at the Curicuriari River in northwestern Brazil.