FROGS OF COLOMBIA — COCHRAN AND GOLN 217 



skinfold across chest; adult female, no vocal sac. Skin of head not co- 

 ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 52.7 mm.; head length, 19.2 mm.; 

 head width, 19.2 mm.; femur, 27.2 mm.; tibia, 31.8 mm.; heel-to-toe, 

 38.5 mm.; hand, 17.1 mm. 



Color in alcohol. — A rather brilliantly marked black and yellow 

 frog. The general ground color seems to be a pale yellow with a black 

 pattern as follows: a few tiny blotches along margin of upper lip; 

 a blotch on each can thai region; a narrow interocular bar with a median, 

 posterior projecting portion that passes back to the occipital region; a 

 line along the supratympanic ridges; a pair of straight, posteriorly 

 diverging lines in the suprascapular region; a somewhat enlarged 

 blotch on each sacral protuberance that extends to the groin on each 

 side; three broad, narrowly separated crossbands on each thigh, 

 shank, and foot; a single broad crossband on each upper arm, forearm, 

 and hand; chin, throat, and breast with numerous distinct, discrete 

 spots, each about the diameter of a pin head. 



Remarks. — The three specimens at hand (holotype and two para- 

 types) are rather uniform in both structure and pattern. The speci- 

 men from Amapa, Brazil, has a little less webbing between the fingers 

 than the other two but the difference is so slight that it seems 

 insignificant. 



This species, together with buckleyi and pearsoni certainly make a 

 closely knit group. We have examined the type series of buckleyi in 

 detail and have seen (but have not examined in detail) the type of 

 pearsoni. Both buckleyi and cabrerai, have long hind legs, with the 

 extended heel reaching to the tip of the snout, while in pearsoni the 

 extended heel reaches only to the eye. H. buckleyi has the belly dusky, 

 while it is heavily spotted in cabrerari and is reticulated in pearsoni. 

 H. cabrerai seems to have the heaviest hands with the most webbing 

 between the fingers; the other two species have the webbing reduced 

 between the fingers. 



This species is dedicated to our friend Sr. Isadore Cabrera, collector 

 of the type, who was trained in the field by Prof. R. E. Schultes of 

 Harvard and who has contributed appreciably to the knowledge of 

 his native country by both his botanical and his zoological collections. 



8. ALBOMARCINATA group 



Moderate-sized, pale tree frogs (pale to white in preservative) 

 with patagia and well-developed ulnar and tarsal ridges, a triangular 

 dermal appendage on the heel, and a transverse glandular ridge 

 above the vent. The species that are known from life have pink or 

 or red webs between the fingers and toes. In addition to H. albo- 



