40 U.S. NATIONAL MUSEUM BULLETIN 288 



black sinuous stripe on each side, and its chest and belly are white 

 with some dark spots and reticulations. In femoralis the throat and 

 chest and anterior half of belly are uniformly black, while the poste- 

 rior belly is light with black spots. The foot of boulengeri is signifi- 

 cantly shorter than that of femoralis, and the dorsum and venter of 

 the former species are smooth (minutely pustular under the lens), 

 while the back is distinctly granular in most examples of femoralis. 

 It was interesting to find that specimens of Phyllabates boulengeri 

 from Narino and Valle are identical to those from Gorgona Island 

 instead of being more similar to Phyllabates femoralis, a species 

 associated solely with the mainland. In both species the skin is not 

 unduly subject to abrasion. Scarcely a tear appears in the skins of 

 the recently collected series of examples from Gorgona. 



Specimens Examined 

 COLOMBIA 



Cauca: Gorgona Island: USNM 52406 (cotype of boulengeri Barbour), 



118232-3 cotypes of femoralis Barbour), 145248-300. 

 Narino: Imbilf, Rfo Mira, USNM 14731-50. 

 Valle: Camp Carton de Colombia, lower Calima River, USNM 149723-7. 



Phyllobates femoralis (Boulenger) 



Plate 8a-c 



1882. Prostherapis inguinalis (not of Cope). — Boulenger, 1882a, p. 138 (part). — 



Peracca, 1904, p. 15.— Beebe, 1919, p. 209. 

 1S84. Prostherapis femoralis Boulenger, 18S4a, p. 635 (type locality, Yurimaguas, 



Huallaga River, northern Peru) ; 1886b, p. 412; 1898a, p. 118. — Gorham, 



1963, p. 25. 

 1913. Dendrobales aurotaenia Boulenger, p. 1029, pi. 104, fig. 1 (type locality, 



Pena Lisa, Condoto, [Choc6] Colombia, at 300 ft.) —Dunn, 1957, p, 78. 

 1920. Phyllobates inguinalis (not of Cope). — Barbour and Noble, 1920, p. 401. — 



Noble, 1926b, p. 9.— Crawford, 1931, p. 36. 

 1935. Phyllobates femoralis. — Parker, 1935, p. 506. — Lutz and Kloss, 1952, 



p. 671.— Goin and Layne, 1958, p. 102.— Dunn, 1957, p. 77. 

 1957. Phyllobates auro-taenia. — Dunn, 1957, p. 78. 



Description. — USNM 146872, an adult from Florencia, Caqueta, 

 Colombia. Width of tongue more than half that of mouth opening, 

 spatulate, its free posterior border with three weak lobes; snout 

 moderate, broadly truncate at the tip when seen from above, rounded 

 in profile, the upper jaw extending well beyond the lower; nostrils 

 lateral, placed below the canthal angle, their distance from end of 

 snout about one-half their distance from eye, separated from each 

 other by an interval about 1% times their distance from eye. Canthus 

 rostralis rounded but distinct; loreal region flat, vertical, with a 

 narrow furrow along its lower boundary from nostril to below the eye; 



