132 U.S. NATIONAL MUSEUM BULLETIN 2 88 



Description. — USNM 110958, an adiilt from Puerto Utria, Choc6, 

 Colombia. Head as long as broad; tongue half as wide as mouth 

 opening, oval, its posterior border free and unnotched; snout bluntly 

 rounded when viewed from above, flat and slanting backwards in 

 profile, the upper jaw extending well beyond the lower. Nostrils 

 lateral, slightly projecting, their distance from end of snout about 

 one-third their distance from eye. Canthus rostralis rounded and 

 slightly concave; loreal region flat, vertical, descending to the upper 

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

 of snout; interorbital diameter approximately equal to that of upper 

 eyelid, and to interval between nostrils. Tympanum not visible. 

 Fingers moderate, without lateral ridges, free, first finger not well 

 developed, fourth longer than second, its tip reaching beyond base of 

 penultimate phalanx of third; a very indistinct thumb pad present; 

 a weak palmar callus; metacarpal tubercles weakly developed. Toes 

 moderate, one-half webbed, the first and second reduced in size 

 and fully webbed; third toe shorter than fifth, the tip of which reaches 

 beyond base of antepenultimate phalanx of fourth; a small round 

 metatarsal tubercle and an outer one of about the same size and 

 shape; subarticular tubercles of foot small, single, weakly developed; 

 no tarsal ridge; a slight skinfold on heel and knee. Body very slender, 

 elongate, in postaxillary region narrower than greatest width of head. 

 When arm is adpressed, penultimate phalanx of third toe reaches 

 to end of body; when hind leg is adpressed, heel reaches nostril; 

 when limbs are laid along the sides, knee and elbow overlap; when 

 hind legs are bent at right angles to body, heels overlap. Skin of 

 upper parts minutely pustular; venter also pustular, the pustules a 

 little larger on posterior belly and below venter; a short bony ridge 

 from posterior corner of eye above tympanic area; no skinfold across 

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



Dimensions. — Head and body, 23.5 mm.; lead length, 7 mm.; 

 head width, 7 mm.; femur, 11.5 mm.; tibia, 12.5 mm.; foot, 8.5 mm.; 

 hand, 6.5 mm. 



Color in alcohol. — Dorsum wood brown, with a pale ecru drab 

 median line beginning at tip of snout, forking to anterior eyelid, and 

 continuing as an irregular dorsolateral stripe from posterior eyelid 

 to groin; this light stripe widened above tympanum and containing 

 two small dark spots, and farther back with two rather wide light 

 chevrons connecting the two stripes, each chevron with a diagonal 

 row of dark spots up its center; top of femur with a wide diagonal 

 umber bar, the pale ecru drab area surrounding it with two round 

 dark spots; postanal region with a dark brown chevron, widening 

 below; anterior femur drab, with a sharp demarcation with the paler 

 upper surface; venter cream buff, with small wood brown spots on 



