210 U.S. NATIONAL MUSEUM BULLETIN 2 88 



of fourth toe somewhat larger than the tympanic area; a distinct 

 oval inner but no distinct rounded outer metatarsal tubercle; well- 

 developed tarsal ridge; no dermal appendage on heel. Body not 

 elongate, in postaxillary region a little narrower than greatest width 

 of head; when hind leg is adpressed, heel reaches almost to nostril; 

 when limbs are laid along the side, knee and elbow overlap 

 considerably; when hind legs are bent at right angles to body, heels 

 overlap greatly. No patagium. Skin of upper parts highly glandular, 

 with prominent, elongate, wart-like tubercles; these tubercles con- 

 spicuous on all dorsal surfaces, including the arms and legs with a 

 well-developed patch on each heel; a strongly developed glandular 

 ridge passing above upper part of tympanum and continuing pos- 

 teriorly to above arm; skin of throat, chest, belly, and lower surface 

 of thigh uniformly and coarsely granular; no traces of a 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, 109.7 mm.; head length, 35.8 mm.; 

 head width, 42 mm.; femur, 50.5 mm.; tibia, 60.3 mm.; heel-to-toe, 

 84.8 mm.; hand, 41.3 mm. 



Color in alcohol. — Above, very dark brown with no discernible 

 pattern although slightly paler above sacral region. Below, somewhat 

 paler than above but still quite dark. On chin and throat the dark 

 brown pigment is in a more or less vermiculated pattern, while on the 

 undersurfaces of thighs it appears as larger blotches that are sep- 

 arated by narrow bands of lighter area. Elsewhere the dark pigment 

 is so concentrated that it leaves no discernible pattern. The general 

 effect is that of a dark, chocolately brown frog with slightly lighter 

 ventral surfaces. 



Remarks. — We do not understand how Dunn came to describe 

 this species as having the skin of the head co-ossified with the skull, 

 for we have made a slit in the skull cap and can move a needle com- 

 pletely over the top of the skull without finding any evidence that 

 the skin is fused to it. 



Duellman brought the type of Hyla immensa Taylor from Costa 

 Rica to Gainesville, Florida, and he and the junior author compared 

 it with the type of H. phantasmagoria. The only possible conclusion 

 was that the two species are very closely related. It is very possible 

 that they represent different races of a single species, but we do not 

 wish to make this assignment after examining only two specimens. 



6. carri group 



Large tree frogs with reduced webbing between the fingers and a 

 dorsal pattern of dark blotches bordered with light margins. H. 

 daresignata of Brazil apparently belongs in this group. 



