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FIG. 6. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 6. — Tomlinsonia mclaughlinae n. sp., scanning electron micrographs: A-C, paratype ♀ (USNM 1084104); A, mouth cirri and mouthparts, dorsal view; B, mouth cirri and labrum, lateral view; C, maxillae and mandibles, position of stub setae at base of maxillae II shown by arrowhead; D, E, paratype ♀ 5.9 mm (USNM 1084106); D, stub setae; E, denticules of maxilla II. Abbreviations: MD, mandible; M1, maxilla I; M2, maxilla II. Scale bars: A, B, 500 µm; C, 100 µm; D, 5 µm; E, 2.5 µm.

FIG. 4. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 4. — Tomlinsonia mclaughlinae n. sp., paratype ♀ (USNM 1084165), scanning electron micrographs: A, right opercular bar, lateral outer view; B, left opercular bar, lateral outer view; C, mantle aperture, ventral view (arrowheads show inner ridges); D, multifid denticules on inside of right opercular bar and along inner ridge, apical view; E, denticules and setae on outside of left opercular bar, lateral view; F, terminal cirri, lateral view, arrowhead shows position of cirral "cushion" (inset shows terminal view of cirrus); G, terminal cirri, lateral view, arrowheads show position of cirral "cushions"; H, terminal cirral "cushion" (inset shows denticules of "cushion"). Scale bars: A-C, 500 µm; D, E, H, 20 µm; F, G, 200 µm; insets of F, H, 2.5 µm.

FIG. 3. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 3. — Tomlinsonia mclaughlinae n. sp., paratype ♀ (USNM 1084097) (note: only selected patches of denticules shown in A, B, J, K): A, right opercular bar, lateral outer view; B, right opercular bar, lateral inner view; C, denticules on outside of right opercular bar, apical view; D, denticules and setae on distal edge of right opercular bar; E, denticules and setae on outside of right opercular bar, lateral view; F, denticules on inside of right opercular bar, apical view; G, multifid denticules on inside of right opercular bar and along inner ridge, apical view; H, plumose seta on inside of right opercular bar; I, denticules on inside of right opercular bar, apical view; J, left opercular bar, lateral outer view; K, right opercular bar, lateral inner view; L, denticules and setae on edge of left opercular bar; M, multifid denticules and setae on outside of left opercular bar, lateral view; N, multifid denticules on inside of left opercular bar, apical view; O, denticules on inside of left opercular bar, apical view; P, denticules along inner ridge (curved line) of right opercular bar, apical view; Q, denticules and setae on inside of left opercular bar, apical view. Scale bars: A, B, J, K, 250 µm; C-F, H, I, L-N, 6.25 µm; G, O-Q, 12.5 µm.

FIG. 5. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 5. — Tomlinsonia mclaughlinae n. sp.: A, paratype ♀ (USNM 1084097), terminal cirrus, lateral view, arrowhead shows position of cirral "cushion" (inset shows two views of terminal hooks); B, paratype ♀ (USNM 1084112), mouth cirri, lateral view (note: plumose nature of setae not shown); C-E, paratype ♀ (USNM 1084097); C, labrum, lateral view (inset shows short setae that cover extensions of labrum); D, mandible; E, maxilla I and maxilla II. Scale bars: A, B, 50 µm; C, 125 µm; D, 25 µm; E, 12.5 µm; insets of A, C, 6.25 µm.

FIG. 2. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 2. — Tomlinsonia mclaughlinae n. sp.: A-C, paratype ♀ 5.90 mm (USNM 1084105); A, shell of Drupella cornus cut away to show barnacle in situ, view of columella with aperture (arrowhead) and striae extending toward apex of shell, chitinous attachment disc shown in gray; B, distal end of chitinous attachment disc covering body of barnacle toward apex of shell, minute tubercles that cover entire disc are only drawn in the upper-left portion; C, female removed from shell shown in A, viewed from right side in same orientation as in A (arrow shows rounded dorsal side of mantle orifice), chitinous attachment disc (in gray) is slightly lifted off of barnacle, distal portion of body not drawn; D, paratype ♂ 0.50 mm (USNM 1084107), lateral view; E, paratype ♀ (USNM 1084102), aperture on columella of unidentified gastropod shell; F, G, paratype ♂ 0.68 mm (USNM 1084109); F, lateral view; G, dorsal view. Scale bars: A, 2.0 mm; B, D, F, G, 125 µm; C, E, 500 µm.

FIG. 9. — Hemioniscus pagurophilus n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 9. — Hemioniscus pagurophilus n. sp., paratype ♂ 0.86 mm (USNM 1084123), scanning electron micrographs: A, right pereopods 3-7; B, propodi and dactyli of right pereopods 5 and 6; C, left pleopod 1. Scale bars: A, 100 µm; B, 20 µm; C, 50 µm.

FIG. 8. — Hemioniscus pagurophilus n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 8. — Hemioniscus pagurophilus n. sp., paratype ♂ 0.86 mm (USNM 1084123), scanning electron micrographs: A, male ventral view; B, anterior end, ventral view; C, left antennule and base of antenna; D, coxal plates of pereomeres 1-3, right side; E, right pereopods 1 and 2. Scale bars: A, 400 µm; B, 100 µm; C, D, 50 µm; E, 20 µm.

FIG. 1. — Tomlinsonia mclaughlinae n in A new species of Tomlinsonia Turquier, 1985 (Crustacea, Cirripedia, Trypetesidae) in hermit crab shells from the Philippines, and a new parasite species of Hemioniscus Buchholz, 1866 (Crustacea, Isopoda, Hemioniscidae)

FIG. 1. — Tomlinsonia mclaughlinae n. sp.: A, holotype ♀ 8.15 mm (USNM 1084093), entire female removed from shell of Drupella cornus, female viewed from right side showing flattened distal margin of right opercular bar, position of male (in gray) shown by arrowhead; B, C, paratype ♀ 3.69 mm (USNM 1084107); B, female in shell cracked to expose body of barnacle, aperture of barnacle burrow on columella shown by arrowhead; C, left side of specimen in B, showing thin opercular bar with "notch" indicated by arrowhead (striae extending toward apex shown by dark dotted lines in B and C). Scale bars: 1 mm.

FIG. 9. — A in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 9. — A, Chicoreus (Siratus) guionneti n. sp., holotype, MNHN (length 56.7 mm), Marie Galante; B, C. (S.) guionneti n. sp., paratype, MNHN (length 37.8 mm), Martinique; C, C. (S.) formosus (Sowerby, 1841), coll. Garrigues (length 63.9 mm), Haiti; D, C. (S.) articulatus (Reeves, 1845), coll. Garrigues (length: 62 mm), Porto Rico; E, C. (S.) ciboney (Clench & Pérez Farfante, 1945), coll. Lamy (length 53.8 mm), Saba Bank; F, C. (S.) cailleti (Petit de la Saussaye, 1856), coll. Lamy (length 60.1 mm), Guadeloupe; G, C. (S.) consuela (Verrill, 1950), coll. Lamy (length 57 mm), Guadeloupe; H, C. (S.) perelegans, coll. Lamy (length 58 mm), Guadeloupe.

FIG. 1 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 1. — Spiral sculpture (apertural view), Chicoreus (Siratus) cailleti (Petit de la Saussaye, 1856); A, Port-Louis (coll. Lamy), four whorls; B, Saba bank (coll. Lamy), five whorls; C, Saintes (coll. Lamy), six whorls; D, Saintes (coll. Lamy), seven whorls. The siphonal canal is not completely drawn. Abbreviations: see text. Scale bars: 5 mm.

FIG. 8 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 8. — Protoconchs and first teleoconch whorl; A, Chicoreus (Siratus) ciboney (Clench & Pérez Farfante, 1945), Port-Louis; B, C. (S.) guionneti n. sp., Martinique; C, C. (S.) cailleti (Petit de la Saussaye, 1856), Saba bank; D, C. (S.) perelegans Vokes, 1965, Port-Louis; E, C. (S.) articulatus (Reeves, 1845), Puerto Cortes; F, C. (S.) consuela (Verrill, 1950), Port-Louis. Abbreviations: see text. Scale bar: 1 mm.

FIG. 3 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 3. — Spiral sculpture (apertural view); A, Chicoreus (Siratus) consuela (Verrill, 1950), Port-Louis (coll. Lamy), seven whorls; B-D, C. (S.) ciboney (Clench & Pérez Farfante, 1945); B, Port-Louis (coll. Lamy), four whorls; C, Port-Louis (coll. Lamy), five whorls; D, Port- Louis (coll. Lamy), seven whorls. For A and D, the siphonal canal is not completely drawn. Abbreviations: see text. Scale bars: 5 mm.

FIG. 4 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 4. — Evolution of the tnv (total number of varices including protovarices and intervarical ribs), the NIR (number of intervarical ribs) and the LD [(LP1/D)*10], during the ontogenesis of the seven Chicoreus (Siratus) species. For each species, the mean is used.

FIG. 2 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 2. — Spiral sculpture (apertural view); A-C, Chicoreus (Siratus) perelegans Vokes, 1965; A, Port-Louis (coll. Lamy), four whorls; B, Port-Louis (coll. Lamy), five whorls; C, Port-Louis (coll. Lamy), six whorls; D, C. (S.) consuela (Verrill, 1950), Port-Louis (coll. Lamy), six whorls. The siphonal canal is not completely drawn. Abbreviations: see text. Scale bars: 5 mm.

FIG. 6 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 6. — Profile views of the intervarical nodules; A, Chicoreus (Siratus) ciboney (Clench & Pérez Farfante, 1945), Port-Louis (coll. Lamy), seven whorls; B, C. (S.) perelegans Vokes, 1965, Port-Louis (coll. Lamy), six whorls; C, C. (S.) consuela (Verrill, 1950), Port- Louis (coll. Lamy), seven whorls; D, C. (S.) articulatus (Reeves, 1845), Porto Rico (coll. Garrigues), seven whorls; E, C. (S.) formosus (Sowerby, 1841), Haiti (coll. Garrigues); F, C. (S.) guionneti n. sp., Martinique (paratype, MNHN); G, C. (S.) cailleti (Petit de la Saussaye, 1856), Saintes (coll. Lamy), seven whorls. Abbreviations: see text. Scale bars: 5 mm.

FIG. 7 in An analysis of the sculptural pattern of the shell in Caribbean members of Chicoreus (Siratus) Jousseaume, 1880 (Gastropoda, Muricidae), with description of a new species

FIG. 7. — Spiral sculpture (apertural view), Chicoreus (Siratus) guionneti n. sp; A, Martinique (coll. Garrigues), five whorls; B, Guadeloupe (coll. Lamy), six whorls. For A, the siphonal canal is not completely drawn. Abbreviations: see text. Scale bars: 5 mm.

opencc-by-4.0Apr 2004View details →

Figure 1 in Convergent evolution of shell shape in freshwater limpets: the African genus Burnupia

Figure 1. General shell shape, size and chirality of the taxa studied. Shells are derived from the populations utilized here, but not necessarily from the specimen used for DNA work. The representative for the genus Burnupia is B. stenochorias. Scale bars = 2 mm.

opencc-by-4.0Apr 2004View details →

Figure 2 in Convergent evolution of shell shape in freshwater limpets: the African genus Burnupia

Figure 2. Bayesian phylogram for basommatophoran taxa based on 2423 nucleotide positions of combined COI and 18S rRNA sequences showing the 50% majority-rule consensuses of topologies sampled during the Bayesian search. The tree was rooted with the outgroup Acroloxus lacustris. The scale bar indicates the expected number of substitutions per site according to the model of sequence evolution applied. Posterior probabilities are provided above the branches. Note that the topology of a maximum likelihood phylogram (not presented here) is identical with the Bayesian phylogram. Maximum likelihood bootstrap support (1000 replicates) is indicated below the branches. Family assignments follow Boss (1982). Ambiguous assignments are indicated by hatchings.

opencc-by-4.0Nov 2006View details →

Figure 20 in Anatomy, shell morphology, and microstructure of the living fossil Pulvinites exempla (Hedley, 1914) (Mollusca: Bivalvia: Pulvinitidae)

Figure 20. Nervous system in Pulvinites exempla. A diagrammatic lateral view showing the position of major nerves and ganglia. Inset: abdominal sense organ, transverse histological section (5 µm, Alcian Blue/Periodic Acid/Schiff 's stain; AMS C.129659, 62.2 mm). Scale bar = 50 µm. aso, abdominal sense organ; CP, cerebropleural ganglia; cpc, cerebropedal connectives; cvc, cerebrovisceral connectives; dpn, dorsal pedal nerves; gn, gill axis nerve; P, pedal ganglia (joined); pamn, posterior adductor muscle nerve; prmn, posterior pedobyssal retractor nerves; sec, supra-oesophageal connective; V, right visceral ganglion (left cannot be observed in this view).