FROGS OF COLOMBIA — COCHRAN AND GOIN 235 



passes above the vent; a distinct narrow glandular ridge passes above 

 tympanum; skin of throat and chest, smooth, that of belly and lower 

 surface of thigh uniformly 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, 61.6 mm.; head length, 21.5 mm.; 

 head width, 22 mm.; femur, 30.2 mm.; tibia, 34 mm.; heel-to-toe, 

 46.1 mm.; hand, 19.6 mm. 



Color in alcohol. — A pale frog with the dorsal surfaces thickly 

 flecked with pepper-like dots. In addition to these flecks the pigment is 

 concentrated in the following places to form a pattern: just back of 

 each nostril a little can thai stripe that goes about halfway to eye; a 

 distinct blotch on each upper lid that is joined to the one on the other side 

 by an interocular bar; three dark marks across the back, the most 

 posterior of which is just above the sacrum. The pepper-like fleckings 

 are reduced on top of the thighs to several patches, the thighs other- 

 wise being immaculate. All ventral surfaces are an immaculate 

 dirty gray. 



Variation. — The male paratype has the ground color nearly white as 

 compared to the cadaverish gray ground color of the long-preserved 

 type. Its pattern is like that of the type, although the details of the 

 dark spots on the dorsum are not absolutely identical. This specimen 

 is 44.2 millimeters in head-body length and the spiny prepollex pene- 

 trates the skin. 



The female paratype is 50.6 millimeter in head-body length and is 

 without dark markings except for little patches of dark brown on the 

 heels and a dark line along the lateral margin of the fifth toe. There 

 are tiny, indistinct, faint specks of pigment on the dorsal surface but 

 these are not dense enough to keep the specimen from looking pure 

 white to the naked eye. The dermal appendages on the heels are not 

 nearly so large as those of the type. This female is packed with ripe, 

 pigmented eggs. 



It is impossible to tell at the present time if the differences between 

 the female paratype and the type have any systematic significance. 



Remarks. — The three specimens at hand surely represent a distinct 

 species in this group of white frogs of the Pacific coast. 



We dedicate this new species to Dr. Jean Guibe\ director of the 

 Museum National d'Histoire Naturelle, Paris, in recognition of our 

 gratitude to him. 



11. SQUALIROSTRIS group 



Members of this group are small Hyla with striped patterns, 

 pointed snouts, and shanks having a diameter equal to that of the 

 thighs. H. linderi and H. parkeri seem to belong in this group. The 



