FROGS OF COLOMBIA — COCHRAN AND GOIN 129 



Description. — CNHM 81872 (holotype), an adult male from San 

 Isidro, Cundinamarca, Colombia. Head as broad as long. Tongue 

 half as wide as mouth opening, elongate, oval, its posterior border 

 free and unnotched; snout long, rounded when viewed from above, 

 sloping backwards in profile, the upper jaw extending well beyond 

 the lower. Nostrils lateral, scarcely projecting, then distance from end 

 of snout equal to their distance from eye. Canthus rostralis concave, 

 rounded; loreal region concave, vertical, descending to the slightly 

 flaring upper lip. Eye large, prominent, its diameter 1% times its 

 distance from tip of snout; interorbital diameter a little greater than 

 that of upper eyelid, equal to interval between nostrils. Tympanum 

 rather indistinct, its greatest diameter apparently one-fifth that of 

 eye, separated from eye by an interval equal to its own diameter. 

 Fingers moderately long, with weak lateral ridges, free, first finger 

 shorter than second, fourth longer than either, reaching to base of 

 disk of third, which nearly covers the tympanum; a long, oval thumb 

 pad present; a large, flat palmar callus; proximal metacarpal tubercles 

 moderately developed, the distal ones rather weak. Toes one-half 

 webbed, third toe slightly shorter than fifth, the disk of which reaches 

 to center of antepenultimate phalanx of fourth; disk of fourth toe 

 nearly covering the tympanum, and about the same size as that of 

 third finger; a rather flat, oval inner metatarsal tubercle and a smaller 

 round outer one; a narrow, sharp tarsal ridge, ending just before 

 the heel; a skinfold on heel and knee. Body moderately elongate, in 

 postaxillary region equal to greatest width of head. When hind leg 

 is adpressed, heel reaches front of shoulder; when arm is adpressed, 

 tip of third finger just reaches to end of body; when limbs are laid 

 along the sides, knee and elbow touch; when hind legs are bent at 

 right angles to body, heels slightly overalp. Skin of upper parts 

 smooth on head, heavily pustular on back, sides and upper limb 

 surfaces; venter finely pustular, with small transverse ridges from 

 chin to chest; a sharp glandular ridge from posterior corner of eye 

 above tympanum, ending above angle of jaw; a weak skinfold across 

 the chest; no ventral disk; no external vocal sacs in the male, but 

 thumb swollen and forearm greatly enlarged. 



Dimensions. — Head and body, 28.5 mm.; head length, 8.5 mm.; 

 head width, 9 mm.; femur, 11 mm.; tibia, 10.5 mm.; foot, 9.5 mm.; 

 hand, 7.5 mm. 



Color in alcohol. — Dorsum fawn color, with an irregular seal brown 

 X-mark from posterior corner of eyelids to shoulders and with other 

 dark irregular markings on the sacrum; surfaces of upper limbs, 

 and sides of head and body heavily marbled with seal brown; chin 

 and throat cinnamon to russet; belly burnt umber with a few large 

 buff spots; lower femur burnt umber; lower limb surfaces seal brown 



