48 U.S. NATIONAL MUSEUM BULLETIN 2 88 



the snout in the unique type of the latter. In the Ecuadorean bocagei 

 the heel extends to "in front of eye." 



Apparently these two species are not closely related to P. palmatus, 

 in spite of the three having about the same degree of webbing be- 

 tween the toes. Unlike palmatus, with its easily torn skin, both 

 chocoensis and bocagei appear to have abrasion-resistant skins that 

 hold up well under the ordinary vicissitudes of collecting, preserving, 

 and shipping. The abrasion-resistance of skin appears to be a useful 

 character for separating other web-toed species from palmatus, 

 although it has not been noticed heretofore. So far, bocagei appears 

 to have been recorded only from Ecuador, but it would not be sur- 

 prising to find it in one of the southernmost states of Colombia. 



When grouped with species having an abrasion-resistant skin 

 combined with the absence of light lines on the side and back, choco- 

 ensis comes nearest to bicolor and thorntoni. As noted elsewhere, it 

 is separated from bicolor by having its toes one-half webbed, and 

 from thorntoni by having its tongue entire, as well as by other 

 characters. 



Specimens Examined 



COLOMBIA 



Antioquia: South of Santa Barbara, BM 1929.2.1.3-6. 



Phyllobates brunneus (Cope) 



Plate 6d-f 



1887. Prostherapis brunneus Cope, 1887a, p. 54 (type locality, "Chupada" 

 [=Chapada], 30 mi. northeast of Cuiaba, Mato Grosso, Brazil). 



1918. Dendrobates ranoides Boulenger, p. 428 (type locality, Villavicencio, 

 Colombia) . 



1920. Phyllobates brunneus. — Barbour and Noble, 1920, p. 401. — Lutz and 

 Kloss, 1952, p. 673.— Cochran, 1955, p. 14.— Dunn, 1957, p. 77— Gines, 

 1959, p. 134.— Rivero, 1961, p. 166; 1964a, p. 304; 1964b, p. 311.— 

 Gorham, 1963, p. 25. 



1922. Phyllobates subpunctatus (not of Cope). — Ruthven, 1922, p. 49. 



1923. Hyloxalus bcebei Noble, 1923a, p. 280 (type locality, near Kaieteur Fall, 



British Guiana); 1931, p. 36. 

 1925. Eupemphix olfersiodes A. Lutz, 1925, p. 138 (type locality, littoral of the 



state of Rio de Janeiro, Brazil). 

 1941. Phyllobates peruvianus Melin, p. 61, fig. 34 (type locality, Roque, Peru). 

 1945. Phyllobates intermedius Andersson, p. 5, fig. 2 (type locality, Rio Pastaza, 



eastern Ecuador). 



Description. — USNM 146907, an adult from Villavicencio, Meta, 

 Colombia. Width of tongue about three-fourths that of mouth open- 

 ing, spatulate, with a very slight indentation on its free posterior 

 border; snout quite short, broadly rounded at the tip when seen from 

 above, nearly vertical and slightly rounded in profile, the upper jaw 

 extending well beyond the lower; nostrils lateral, projecting, just 



