172 U.S. NATIONAL MUSEUM BULLETIN 2 88 



the tympanum; skin of throat and chest finely granular, that of 

 belly and lower femur uniformly and coarsely granular; a well- 

 developed skinfold across chest; no inguinal gland; adult male, vocal 

 sac not apparent. Skin of head co-ossified with skull, roof of skull 

 exostosed, intersquamosal shelf complete and forming a nearly straight 

 posterior margin to the skull. 



Dimensions. — Head and body 65.3 mm.; head length, 23.2 mm.; 

 head width, 25.7 mm.; femur, 31.0±mm.; tibia, 36.4 mm.; foot, 

 46.4 mm.; hand 18.3 mm. 



Color in alcohol. — A light taimish brown above, slightly darker 

 below, particularly the underside of thighs, which are rather dusky. 



Variation. — The male is smaller than the female, a typical adult 

 male having a head-body length of 61.3 millimeters, whereas a large 

 female has a head-body length of 82.0 millimeters. All mature females 

 are not this large however, for the type measures only 66 millimeters 

 and another adult female at hand is only 67 millimeters in length. 

 Most of the specimens are rather uniform brown, but one adult female, 

 MLS 343, from Yarumal, is quite dark along the sides and has the 

 dark lateral color separated from the brownish dorsal color by a 

 distinct, narrow stripe posteriorly. 



It is with some hesitation that we include USNM 152053, from 

 Sutatenza, here. That specimen has a pattern on the dorsum of 

 scattered dark spots and the head is narrower than typical for nicejori. 

 Since its smaller size (head-body 50.0 mm.) may indicate immaturity 

 and since we know rothing of ontogenetic changes in this species, we 

 tentatively assign it on the basis of geography and its well-developed 

 intersquamosal shelf. 



Specimens Examined 

 COLOMBIA 



Antioquia: Yarumal, CNHM 63886, MLS 343. 



Boyaca: Sutatenza, USNM 152053. 



Caldas: Pensilvania, MZUM 73242 (holotype), 71218 (paratype), 92265. 



Cundinamarca: Fusagasuga, MLS 208. 



Gastrotheca medemi, new species 



Figure 12 



Holotype. — MZUM 123068, an adult female from Cano Guapayita, 

 400 meters, Serrania de La Macarena, Meta, Colombia, collected by F. 

 Medem. 



Paratype. — CNHM 81367, Pico Renjifo, 1,500 meters, Serrania de 

 La Macarena, Meta, Colombia. 



Diagnosis. — A large Gastrotheca with the intersquamosal shelf 

 forming a complete, nearly straight margin at the back of the head 

 and with the cranial derm co-ossified with the roof of the skull . 



