FROGS OF COLOMBIA — COCHRAN AND GOIN 137 



in a few, and to a point between eye and nostril in still fewer. The 

 skin at the edge of the upper eyelid is only slightly thickened. 



Specimens Examined 

 COLOMBIA 



Cauca: El Tambo, Giiisito, 800 m., Pacific side, CNHM 54283 (holotype), 



54284-304 (paratypes). 

 Choc6: Playa de Oro, Rio San Juan, 400 m., CNHM 54276-82 (paratypes). 



Atelopus varius bibroni (O. Schmidt) 



Plate 21d-f 



1857. Hylaemorphus bibronii O. Schmidt, p. 14, pi. 3, fig. 25 (type locality, 

 New Granada [Darien region of Colombia and Panama]) ; 1858, p. 256. — 

 Boulenger, 1894, p. 375.— Nieden, 1926, p. 84. 

 1867. Phrynidium bibronii. — Cope, 1867, p. 196.— Nieden, 1926, p. 84. 

 1963. A.[telopus] bibronii. — Rivero, 1963c, p. 108. 



Description. — USNM 147505, a female from Medellm, Antioquia, 

 Colombia. Head a little longer than broad. Tongue slender, one-third 

 as wide as mouth opening, obovate, its posterior border free and 

 unnotched; snout obtusely pointed when viewed from above, and with 

 the tip projecting in profile, the upper jaw extending far beyond the 

 lower. Nostrils lateral, slightly projecting, their distance from end of 

 snout two-thirds their distance from eye. Can thus rostralis sharp; 

 loreal region slightly concave and vertical, continuous with the upper 

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

 of snout; interorbital diameter 1% times that of upper eyelid and a 

 trifle wider than interval between nostrils. Fingers moderately long, 

 webbed at the base, with very wide lateral ridges, first finger much 

 shorter than second, fourth longer than either and reaching halfway 

 on penultimate phalanx of third; a small round thumb pad present; 

 a large round palmar callus; metacarpal tubercles well developed. 

 Outer toes one-half webbed, fifth toe a little longer than third, its 

 tip reaching almost to penultimate phalanx of fourth; first toe distinct 

 but entirely webbed; a small oval inner metatarsal tubercle and a 

 smaller round outer one; subarticular tubercles of foot small, single, 

 less developed than those of hand. No tarsal ridge; a heavy skinfold 

 on heel and knee. Body rather elongate, in postaxillary region narrower 

 than greatest width of head. When arm is adpressed, tip of third 

 finger reaches a point between groin and end of body; when hind leg 

 is adpressed, heel reaches to angle of jaw; when limbs are laid along 

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

 right angles to body, heels touch. Skin of upper parts heavily glandular, 

 with numerous small conical tubercles on sides of body, sacrum, and 

 upper limb surfaces; venter finely granular on throat and chest, 



