60 U.S. NATIONAL MUSEUM BULLETIN 2 88 



Description. — USNM 4349 (holotype), from Truando River, Choc6, 

 Colombia. Tongue half as wide as mouth opening, oval, its posterior 

 border free and unnotched ; snout straight-sided, bluntly rounded at 

 the tip when viewed from above, truncate and sloping slightly back- 

 ward in profile, the upper jaw extending well beyond the lower. 

 Nostrils lateral, scarcely projecting, their distance from end of snout 

 one-fourth their distance from eye. Can thus rostralis rounded; loreal 

 region concave, furrowed at its junction with the nearly vertical upper 

 lip. Eye large, prominent, its diameter equal to its distance from tip 

 of snout; interorbital diameter slightly greater than that of upper 

 eyelid, equal to interval between nostrils. Tympanum indistinct, its 

 greatest diameter apparently about two-fifths that of eye, separated 

 from eye by an interval equal to one-third its own diameter. Fingers 

 rather short, with traces of webs at the base and with strong lateral 

 ridges, first finger a trifle longer than second and fourth and reaching to 

 base of penultimate phalanx of third, the disk of which covers about 

 one-fourth the tympanum; an indistinct oval thumb pad present; a 

 round palmar callus; metacarpal tubercles well developed. Toes mod- 

 erately long, one-fourth webbed, third toe a little longer than fifth, 

 its disk reaching to center of antepenultimate phalanx of fourth; disk 

 of fourth toe covering about one-half the typanum and noticeably 

 larger than that of third finger; a small, oval inner metatarsal 

 tubercle and a smaller diagonal outer one; a slight tarsal ridge, ending 

 one-third the way to heel and marked by an elongate tubercle at that 

 point; a heavy skinfold on heel and knee. Body moderately stout, in 

 postaxillary region narrower than greatest width of head. When hind 

 leg is adpressed, heel reaches center of eye; when limbs are laid along 

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

 angles to body, heels are separated. Skin of upper parts easily torn, 

 nearly smooth, a few pustules on snout, behind ear, and along side 

 of body; venter smooth, with some glandules on lower and posterior 

 surfaces of femur; a swollen area above tympanum; no skinfold across 

 the chest; no ventral disk; a pair of lateral external vocal sacs 

 in the male, and sometimes "flanges" on the third finger. 



Dimensions. — Head and body, 28.5 mm.; head length, 9.5 mm.; 

 head width, 9 mm.; femur, 12.5 mm.; tibia, 12.5 mm.; foot, 11 mm.; 

 hand, 7 mm. 



Color in alcohol. — Although the type specimen is much faded, a 

 part of its original pattern can be discerned. Top of head and anterior 

 half of back pale russet to wood brown; sacral region ecru drab with 

 irregular traces of russet in the middle; upper lip russet, with small 

 drab spots near border of lip, but with edge of lip unspotted ecru; 

 axilla white, followed by a narrow vertical cinnamon bar; a wide dark 



