FROGS OF COLOMBIA — COCHRAN AND GOIN 249 



brane not reticulate; interorbital distance slightly greater than width 

 of upper eyelid, which is in turn about equal the distance between 

 nostrils. Tympanum very distinct, about two-thirds the diameter of 

 eye, separated from eye by a distance equal to one-half its own diam- 

 eter. Fingers webbed at base, web reaching to middle of antepenulti- 

 mate phalanx on lateral side and middle of antepenultimate phalanx 

 on medial side, fourth finger a disk shorter than third but a disk longer 

 than second, disk of third finger very nearly covers the tympanic area; 

 no projecting rudiment of a pollex; no ulnar ridge. Toes slightly more 

 than three-fourths webbed, the web on fourth toe reaching the middle 

 of the penultimate phalanx, third and fifth toes subequal, disk of 

 fourth toe covering about one-half the tympanic area; a distinct oval 

 inner and a smaller but very distinct rounded outer metatarsal tuber- 

 cle; 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 tip of snout; when limbs are 

 laid along the side, knee nearly reaches axilla; when hind legs are bent 

 at right angles to body, heels overlap greatly. A small patagium ex- 

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

 parts with numerous small, rounded granular warts. These warts are 

 most thickly concentrated on top of head and dorsum, but more widely 

 scattered ones occur on top of snout and shanks; a well-developed 

 glandular ridge passes above the tympanum; skin of throat and chest 

 fairly smooth, that of belly and lower surface of thigh uniformly 

 granular; no distinct traces of a skinfold across chest; adult male, 

 vocal sac slightly discernible at angle of jaws. Skin of head not co- 

 ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 36.7 mm.; head length, 14.3 mm.; 

 head width, 12.8 mm.; femur, 17.4 mm.; tibia, 20.5 mm.; heel-to-toe, 

 25.3 mm.; hand, 11.2 mm. 



Color in alcohol. — A brown frog with dorsal markings of darker 

 brown. A dark interocular bar connects posteriorly with a dorsal 

 blotch that extends backwards to the vicinity of the sacral hump. 

 There are a few small blotches on the back posterior to the sacral 

 hump and a few small rounded blotches high up on the sides between 

 the axilla and groin. A dark postocular bar extends from eye through 

 the tympanum and fades out above the shoulders. Broad, well-de- 

 veloped, dark crossbands occur on the dorsal surfaces of shanks and 

 less-well-defined but nonetheless distinct ones occur on dorsal surfaces 

 of thighs. The posterior and anterior faces of thighs are without 

 pattern. Top of snout and loreal regions are somewhat darker 

 than the rest of the dorsal surfaces exclusive of the blotches. A light 

 subocular area is reminiscent of that of Hyla versicolor. The ventral 

 surfaces are a dull brownish gray. 



