FROGS OF COLOMBIA — COCHRAN AND GOIN 197 



snout equal to about one-fourth that from eye, separated from each 

 other by an interval equal to about three-fifths their distance from 

 eye. Can thus rostralis well defined; loreal region concave and very 

 oblique, the upper lip flaring out strongly below it. Eye large, but not 

 particularly prominent, its diameter not quite equal to its distance 

 from nostril; palpebral membrane not reticulate; interorbital distance 

 about equal width of upper eyelid, which is relatively wide and slightly 

 greater than distance between nostrils. Tympanum very distinct, 

 about the diameter of eye, separated from eye by a distance nearly 

 equal to one-third its own diameter. Fingers webbed, web extending 

 to middle of penultimate phalanx of third finger on lateral side and 

 base of penultimate phalanx on medial side; fourth finger considerably 

 longer than second, reaching to base of disk of third which covers 

 about one-third the tympanic area; a projecting rudiment of a pollex; 

 a very low and indistinct ulnar ridge. Toes nearly completely webbed, 

 the web on fourth toe reaching to middle of penultimate phalanx and 

 thence as a narrow margin to base of disk; third and fifth toes sub- 

 equal, disk of fourth toe covering about one-fourth the tympanic 

 area; a distinct oval inner and a smaller but equally distinct rounded 

 outer metatarsal tubercle; a low but distinct tarsal ridge; no dermal 

 appendage on heel. Body elongate, in postaxillary region a little nar- 

 rower than greatest width of head; when hind leg is adpressed, heel 

 reaches beyond tip of snout; when limbs are laid along the side, knee 

 and elbow overlap; when hind legs are bent at right angles to body, 

 heels overlap greatly. No patagium. Skin of upper parts smooth; a 

 glandular ridge encircling upper part of tympanum; skin of throat 

 and chest finely granular, that of belly and lower surface of thigh 

 uniformly and not so finely granular; no traces of a skinfold across 

 chest; adult male, vocal sac hardly apparent. Skin of head not co- 

 ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 82 mm.; head length, 27.5 mm.; head 

 width, 26.5 mm.; femur, 44.5 mm.; tibia, 49.2 mm. ; heel-to-toe, 60.7 

 mm.; hand, 24.6 mm. 



Color in alcohol. — A very light brown above, a tannish brown below. 

 A dark chocolate brown thin line originates on top of snout just posterior 

 to nostrils and passes backward as a median line to a point about half- 

 way between sacral hump and vent. There are faint indications of 

 dorsal blotches and some more definite blotches on each side anterior 

 to the groin but these are not arranged into distinct vertical bars al- 

 though they show a tendency toward such an arrangement. A dark 

 horizontal line about a half -inch long passes through the vent and similar 

 horizontal lines pass across each heel and become contiguous with the 

 line on vent when legs are flexed. The webbing on hands and feet is no 

 darker than the rest of the appendages. 



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