FROGS OF COLOMBIA — COCHRAN AND GOIN 303 



longer than second, just reaching to disk of third which slightly more 

 than covers the tympanic area; no projecting rudiment of a pollex; 

 no ulnar ridge. Toes more than one-half webbed, the web on fourth 

 toe reaching base of penultimate phalanx, third and fifth, toes sub- 

 equal, disk of fourth toe snugly covering the tympanic area; a distinct 

 oval inner and a smaller indistinct rounded outer metatarsal tubercle; 

 no 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 anterior margin of eye; when 

 limbs are laid along the side, knee and elbow touch snugly; when 

 hind legs are bent at right angles to body, heels overlap. A patagium 

 extends from the back of upper arm to side of body. Skin of upper 

 parts smooth; a pair of well-developed, rounded glandular areas in 

 pectoral region; a rather narrow glandular ridge passing above upper 

 part of tympanum; skin of throat and chest finely wrinkled, except 

 for glandular areas mentioned above; that of belly and lower surface 

 of thigh uniformly granular; a well-developed skinfold across chest; 

 adult male, vocal sac apparent only as wrinkled skin in gular region. 

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



Dimensions. — Head and body, 26.3 mm.; head length, 9.4 mm.; 

 head width, 9.4 mm.; femur, 11.7 mm.; tibia, 13.4 mm.; heel-to-toe, 

 19 mm.; hand, 9.6 mm. 



Color in alcohol. — Pale brown above, yellowish gray below. There 

 are several little darker spots on the back but these are so incon- 

 spicuous and scattered that in no sense can the specimen be said to 

 have a spotted dorsum. The upper Up and loreal region are dark 

 brown, and this dark brown coloration passes posteriorly through the 

 tympanum and above the shoulder, then continues posteriorly as a 

 progressively fading stripe nearly to the groin. The dorsal surface of 

 both the upper and lower arm is heavily pigmented, as is the upper 

 surface of the shank and foot. The thigh is unpigmented except for a 

 narrow band of pigment along its dorsal surface connecting the pigment 

 of the dorsum with the pigment on the dorsal surface of the shank. 

 Except for the margin of the lower lips, the ventral surfaces are 

 immaculate. 



Color in life. — In life all the specimens were an unmarked brownish 

 yellow on the back with a blackish subocular and postocular stripe 

 that extended to the groin as a narrow dusky stripe. The ventral 

 surfaces of the body, the thighs, and the palms and soles were salmon 

 pink. The distended vocal sacs were yellowish white. 



Variation. — The four specimens in the University of Florida series 

 are remarkably uniform. They are all males and range in size from 

 22.7 to 26.3 millimeters. So far as pattern is concerned, there are no 

 noteworthy differences between the individuals. 



