FROGS OF COLOMBIA — COCHRAN AND GOIN 511 



La Palma, MCZ 152881, USNM 75072, 77034; San Isidro, USNM 77040-1; 

 Turrialba, Cartago, USNM 29957, MNHUK 65201-20. (Color transparencies: 

 Tapantl, Cartago, MNHUK 65189; Laguna Monte Alegre, Alajuela, 

 MNHUK 65186; Hereida, 2 km. north of Cinco Esquinias, MNHUK 65232.) 



PANAMA: Canal Zone, USNM 37864; Fort Davis, Canal Zone, MCZ 11780; 

 Barro Colorado Island, Canal Zone, MCZ 15245; El Valle de Ant6n, AMNH 

 59593-5; Laguna, Darien, MNHUK 77535; Tacarcuna, Darien, MNHUK 

 77536-9; Rio Esnape, MCZ 9175. 



VENEZUELA: Rio Chacaito, Miranda, CM 22796, USNM 12889-93; Los 

 Canales, Naiguata, Miranda, CM 22783-4, USNM 117523-4, 128796-9; 

 Curupao, Miranda, USNM 128888; Aragua, USNM 128800; Rio Cortiza, 

 Distrito Federal, USNM 128801; near Turumiguiri, Sucre, CM 9122; 

 Santa Ines, Monagas, UCV 3020; Guachoro, Monagas, UCV 3018 (4). 



ECUADOR: Guevedo, USNM 60520. 



SURINAME: RNH 4463 (type of Hylella cappellei). 



Centrolenella medemi, new species 



Figure 52 



Holotype. — USNM 152277, collected at Puerto Asis, upper Rio 

 Putumayo, Putumayo, Colombia, by Fred Medem, October 22, 1958. 



Diagnosis. — A centrolenid with vomerine teeth and with a dorsal 

 pattern of numerous, randomly placed white spots on top of head, 

 dorsum, and upper surfaces of limbs. 



This new species may be distinguished from all Colombian Centro- 

 lenella except parabambae and grandisonae by the presence of vomerine 

 teeth; and from those two species it differs by having light spots on 

 the dorsal surfaces of forearms, thighs, and shanks. 



Description of holotype. — Vomerine teeth in two short, somewhat 

 transverse series, lying close together between the small, rounded 

 choanae; tongue one-half as wide as mouth opening, rounded, its 

 posterior border very slightly free and unnotched. Snout short, 

 rounded when viewed from above, truncate in profile, the upper jaw 

 extending but slightly beyond lower; nostrils superior and anterior, 

 slightly projecting, their distance from end of snout nearly equal 

 to their distance from eye, separated from each other by an interval 

 as great as that from eye. Can thus rostralis slightly defined; loreal 

 region flat and somewhat oblique, the upper lip flaring out below it. 

 Eye large, very prominent, its diameter nearly twice its distance 

 from nostril; palpebral membrane not reticulate; interorbital distance 

 slightly greater than width of upper eyelid, which is slightly less than 

 distance between nostrils. Tympanum very indistinct, about one- 

 fourth the diameter of eye, separated from eye by a distance equal 

 to one-half its own diameter. Fingers webbed, the web extending 

 from the middle of the penultimate phalanx of fourth finger to base 

 of penultimate phalanx of third and from base of antepenultimate 

 of third to base of penultimate of fourth; fourth considerably longer 



