FROGS OF COLOMBIA — COCHRAN AND GOIN 447 



femur is immaculate. Of 27 Santander frogs, the lower femur is im- 

 maculate in one, has pale spots (many or few) in eight, and has black 

 or medium-brown spots (many or few) in 18. Of 52 specimens from the 

 mainland of Panama, the lower femur is immaculate in none, has pale 

 spots in five, and black or medium spots in the others. Of eleven topo- 

 types (in USNM) of stentor (Espada) from Taboga Island, Panama, 

 ten have black or medium spots and the remaining specimen has pale 

 spots on the lower femur. 



The belly granulations appear to be about equally developed when 

 fairly large series of pustulosus and "ruthveni" are compared, while the 

 adpressed heel may or may not reach the eye in each group. 



While the dorsal pattern in freshly collected examples of Pana- 

 manian pustulosus appears to be a little more apparent than in "ruth- 

 veni," an occasional example of the latter may display a pattern as 

 contrasting as in any pustulosus specimen, and the linear glandules 

 and longitudinal dark striping of an occasional specimen of either 

 form reminds one of the trinitatis pattern. 



Specimens of pustulosus and "ruthveni" were compared with the 

 eleven topotypes of stentor. In the latter, the dorsal skin is almost 

 smooth to faintly pustular, and this character is sufficient to dis- 

 tinguish stentor from pustulosus or "ruthveni" both of which have very 

 rugose backs, often with the tubercles in short or long rows, either 

 transverse, diagonal, or longitudinal. Apparently the species stentor 

 does not occur on the mainland of Central or South America, being 

 restricted to Taboga Island. 



Because of the presence of intergrades in collections of several frogs 

 from one locality, it seems reasonable to include ruthveni in the syn- 

 onymy of pustulosus. 



Specimens Examined 

 COLOMBIA 



Antioquia: Casabe, USNM 147016; Chigorod6, USNM 151893-900; Sam- 



pedro, AMNH 38712. 

 Atlantico: Barranquilla, DZSP 6006-32; Palmar de Varela, Ponedera, south 



of Barranquilla, Rio Magdalena, USNM 144818. 

 BolIvar: Coloso, east of Toluviejo, 250 m., USNM 152655; Hacienda La 



Aguada, 22 km. from San Onofre, USNM 152648-52; Sincelejo, USNM 



144819, 150742; Toluviejo, DZSP 5439-41. 

 C6rdoba: Rio Manso, tributary of upper Rio Sinu, USNM 151027-30. 

 Cundinamarca: Apulo, USNM 144820; one km. east of Girardot, USNM 



146219; San Javier, La Mesa, USNM 144821-3; Bogota, JRT (2). 

 Gxtajira: Thirty km. south of Castilletes, USNM 152657 (3 juv.); Piojo, 100 



m., USNM 152658-75. 

 Magdalena: Cienaga, Casa Blanca, USNM 144155-6; Curumani, USNM 



118174; Finca El Aranar, Bonda, USNM 152695-712; Fundaci6n, USNM 



118717 (paratype of "ndhvcni"); Santa Marta Mountains, MCZ 15698 



