FROGS OF COLOMBIA — COCHRAN AND GOIN 327 



Description. — MLS 258a, from Astillero, Norte de Santander, 

 Colombia. Vomerine teeth in two short, transverse series, lying close 

 together between the moderate-sized, rounded choanae ; tongue three- 

 fourths as wide as mouth opening, nearly round, its posterior border 

 slightly free and very shallowly notched. Snout moderate, somewhat 

 rounded when viewed from above, broadly rounded in profile, the 

 upper jaw extending slightly beyond lower; nostrils more lateral than 

 superior, somewhat projecting, their distance from end of snout about 

 two- thirds that from eye, separated from each other by an interval 

 equal to their distance from eye. Can thus rostralis slightly defined; 

 loreal region concave and slightly oblique, the upper lip flaring out a 

 little below it. Eye small, not prominent, its diameter equal to its 

 distance from nostril; palpebral membrane not reticulate; interorbital 

 distance about equal to width of upper eyelid, which is about equal to 

 the distance between nostrils. Tympanum very distinct, about three- 

 fourths the diameter of eye, separated from eye by a distance equal to 

 about one-half its own diameter. Fingers webbed at base, web reaching 

 middle of antepenultimate phalanx of third finger, fourth finger about 

 a disk longer than second, reaching to middle of disk of third which 

 just covers the tympanic area; no projecting rudiment of a pollex; no 

 ulnar ridge. Toes three-fourths webbed, the web on fourth toe reaching 

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

 fourth toe covering about four-fifths the tympanic area; a distinct 

 oval inner and a smaller but equally distinct rounded outer metatarsal 

 tubercle; no tarsal ridge; no dermal appendage on heel. Body not 

 elongate, in postaxillary region about equal greatest width of head; 

 when hind leg is adpressed, heel reaches posterior margin of eye; when 

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

 hind legs are bent at right angles to body, heels overlap very slightly 

 No patagium. Skin of upper parts glandular, with small, rounded, 

 wart-like tubercles scattered over the posterior portion of the back; 

 the thick, glandular skin on top of the head lapping over the upper part 

 of tympanum; skin of throat, chest, belly, and lower surface of thigh 

 coarsely granular; traces of a skinfold across chest; adult female, 

 no vocal sac. Skin of head thickened but not co-ossified with skull, 

 roof of skull not exostosed. 



Dimensions. — Head and body, 72.5 mm.; head length, 25.4 mm.; 

 head width, 28.8 mm.; femur, 34.5 mm.; tibia, 38.3 mm.; heel-to-toe, 

 53.7 mm.; hand, 22.7 mm. 



Color in alcohol. — Dorsal ground color light brown with a super- 

 imposed pattern of dark brown. The dark pattern consists of a broad 

 band that originates between the eyes, passes posteriorly in a slightly 

 sinusoidal curve to the region of the sacral hump where it abruptly 

 broadens, extending down on the sides; it then begins to taper and 



