FROGS OF COLOMBIA — COCHRAN AND GOLN 33 



and unnotched; snout broadly rounded when viewed from above, 

 truncate and sloping backwards in profile, the upper jaw extending 

 well beyond the lower. Nostrils lateral, scarcely projecting, their 

 distance from end of snout one-half their distance from eye. Canthus 

 rostralis rounded but distinct; loreal region slightly concave, vertical, 

 continuous with the upper lip. Eye large, prominent, its diameter 

 equal to its distance from tip of snout; interorbital diameter equal 

 to that of upper eyelid and equal to interval between nostrils. Tym- 

 panum distinct, its greatest diameter about two-fifths that of eye, 

 separated from eye by an interval equal to one-fifth its own diameter. 

 Fingers long, with lateral ridges, free, first finger much shorter than 

 second, fourth longer than either and reaching to penultimate pha- 

 lanx of third, the disk of which covers half the tympanum; a weak 

 oval thumb pad present; a larger round palmar callus; metacarpal 

 tubercles rather weak. Toes moderate, third toe much longer than 

 fifth, its disk reaching halfway on antepenultimate phalanx of fourth; 

 disk of fourth toe covering one-third the tympanum and a little 

 smaller than that of third finger; a weak oval inner metatarsal tubercle 

 and a larger round outer one; a slight tarsal ridge, ending at heel; 

 a heavy skinfold on heel and knee. Body elongate, in postaxillary 

 region equal to greatest width of head. When hind leg is adpressed, 

 heel reaches posterior edge of tympanum; when limbs are laid along 

 the side, knee and elbow slightly overlap; when hind legs are bent 

 at right angles to body, heels overlap. Skin of upper parts smooth 

 (pustular under the lens); venter smooth, except for some small 

 tubercles on femur near anus; a weak glandular ridge from posterior 

 corner of eye curving behind tympanum, ending in front of shoulder; 

 a slight skinfold across the chest; a weak ventral disk; a pair of 

 lateral external vocal sacs in the male. 



Dimensions. — Head and body, 32 mm.; head length, 10 mm.; head 

 width, 9.5 mm.; femur, 12.5 mm.; tibia, 13 mm.; foot, 11.5 mm.; 

 hand, 8.5 mm. 



Color in alcohol. — Dorsum olive-gray with many small irregular 

 black spots scattered over head, body, femur, and tibia; venter slate 

 color marbled with black; chin, throat, and chest covered by an 

 irregular black spot; lower surfaces of legs, feet, and hands black; 

 sides olive-gray with minute black dots which merge to form black 

 patches in axilla and around shoulder and in groin; side of head 

 olive-gray, the edge of upper lip black; nostrils, tip of snout, and 

 canthus with irregular black reticulations; posterior femur olive-gray 

 with fine black dots; disks and tubercles on feet and hands pale 

 drab-gray. SUNHM 13267 has retained some of its original color, 

 as it is pale geranium pink above and on the sides and small slate- 

 colored spots are scattered over the back. The venter is smoke-gray, 



