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FIGURE 6 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 6. Colostethus kaiei, new species, four paratypes from the type locality showing variation in colour and pattern. Top row: Adult males, left to right, IRSNB 1960 (18.9 mm SVL), IRSNB 1957 (18.4 mm SVL). Bottom row: Adult females, left to right, IRSNB 1954 (17.8 mm SVL), IRSNB 1953 (18.1 mm SVL). Photographs by P. J. R. Kok.

FIGURE 9 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 9. Sonogram (top) and amplitude waveform (bottom) of advertisement calls of males Colostethus kaiei from Kaieteur National Park Guyana. Colostethus kaiei advertisement calls are repetitive, unmodulated whistled short duration notes or syllables usually broadcast as paired notes (a; holotype IRSNB 1938) about 32 ms in duration, but sometimes as a mixture of paired and single notes (b; paratype IRSNB 1964). The waveform illustrates relative amplitude (sound volume) that is reflected in the height of the spikes above and below the 0 Pa axis.

FIGURE 5 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 5. Colostethus kaiei, new species, two paratypes showing the variation of colouration and sexual dichromatism. Top and bottom left, IRSNB 1959, adult male (16.5 mm SVL). Middle and bottom right, IRSNB 1958, adult female (19.6 mm SVL). Photographs by P. J. R. Kok.

FIGURE 1 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 1. Scanning electron micrograph of the dorsal surface of the tongue of Colostethus kaiei, new species (male paratype, IRSNB 1957) showing the position and orientation of the median lingual process (white arrow). The short, blunt tipped MLP is directed toward the anterior part of the tongue (on the right on the picture).

FIGURE 13 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 13. Small pool (about 39 cm by 43 cm and 6 cm of maximum depth), between roots at the base of a tree in which tadpoles of Colostethus kaiei were found. Photograph by P. J. R. Kok.

FIGURE 8 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 8. Scanning electron micrograph of the oral disc of the tadpole of Colostethus kaiei, new species (IRSNB 13766, stage 27, 16.8 mm TL).

FIGURE 11 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 11. One of the ten pitfalls (plastic buckets of about 28 cm diameter at the top, 30 cm deep) installed beneath a thirty meters sheetplastic drift fence along the Tukeit trail in which Colostethus kaiei larvae were found. Photograph by P. J. R. Kok.

FIGURE 14 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 14. Map showing the type locality of Colostethus kaiei, new species in northern South America (circle).

FIGURE 3 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 3. Colostethus kaiei, new species (holotype), ventral view of hand (left) and foot (right). Not same scale: scale bars = 1 mm. Photographs by P. J. R. Kok.

FIGURE 7 in A new species of Colostethus (Anura: Dendrobatidae) with maternal care from Kaieteur National Park, Guyana

FIGURE 7. Dorsolateral view of the tadpole of Colostethus kaiei, new species, in life (IRSNB 13767, stage 25, 10.5 mm TL). Photograph by P. J. R. Kok.

FIGURE 6. Pristimantis saltissimus new species. a in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 6. Pristimantis saltissimus new species. a = plain or slightly spotted morph (43% in a sample of 30); b = middorsally orange-striped morph (10%); c = dorsally tan morph (17%); d = thin, white-striped morph (10%); e = dorsal views of the mottled morph (20%) and thin, white-striped morph; f = ventral views of same morphs as in e. Note that the striping also occurs on the belly of the thin, white-striped morph.

FIGURE 3 in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 3. Map of Guyana with the location of the Wokomung Massif in the Pakaraima Mountains (gray shading) and in relation to some other teuis in Guyana. Map modified from one supplied by Philippe J. R. Kok.

FIGURE 4. Pristimantis jester new species. a in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 4. Pristimantis jester new species. a = USNM 563631, holotype; b = USNM 563632, paratopotype with middorsal orange stripe; c = ventral aspects of a and b, respectively; d = USNM 563633, paratype.

FIGURE 2 in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 2. Hand (left) and foot (right) of Pristimantis dendrobatoides new species, USNM 533652 holotype. Black bars = 5.0 mm.

FIGURE 1 in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 1. Pristimantis dendrobatoides new species; a = USNM 563662, holotype, at moment of discovery on the leaf of a melastome; b = USNM 563661, paratopotype, side view; c = USNM 563661, dorsal view; d = USNM 563661, ventral view.

FIGURE 5 in Three New Malodorous Rainfrogs of the Genus Pristimantis (Anura: Brachycephalidae) from the Wokomung Massif in west-central Guyana, South America

FIGURE 5. Pristimantis jester new species. Hand (left) and foot (right). USNM 563631 holotype. Black bars = 5.0 mm.

FIGURES 9–11 in A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America

FIGURES 9–11. Microthelphusa meansi new species. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098373, left first gonopod. 9, caudal view; 10, lateral view; 11, cephalic view. Scale = 3.0 mm.

FIGURES 1–8 in A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America

FIGURES 1–8. Microthelphusa meansi new species. Male holotype, cw 22.5 mm, from the Wokomung Massif, Guyana, USNM 1098372. 1, carapace, dorsal view; 2, cephalothorax, frontal view; 3, right cheliped, frontal view; 4, left cheliped, frontal view; 5, carpus and merus of right cheliped, dorsal view; 6, carpus and merus of right cheliped, inferior view; 7, left third maxilliped; 8, sternum. Scale = 3.2 mm (1, 2), 3.5 mm (3–8).

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FIGURE 1 in Apareiodon agmatos, a new species from the upper Mazaruni river, Guyana (Teleostei: Characiformes: Parodontidae)

FIGURE 1. Holotype of Apareiodon agmatos CSBD F1650 66.3 mm SL; Guyana: Mazaruni River: sandy beach on right bank, downstream from village of Kamarang (5º56'10.1" N, 60º36'53.8" W).