FROGS OF COLOMBIA — COCHRAN AND GOIN 147 



Diagnosis. — An Agalychnis with the first toe shorter than the second, 

 extensively webbed fingers, a sloping snout, and a triangular dermal 

 appendage on the heel. 



This species differs from all other Colombian frogs with vertical 

 pupils except A. spurrelli by the presence of extensive webbing be- 

 tween the fingers. From spurrelli it differs in having a prominent 

 triangular dermal appendage on the heel and a glandular fold above 

 the vent. In pattern it differs in having no reticulations on the 

 palpebral membrane, in having blackish, finger-like projections from 

 the dorsal ground color onto the ventral light color, in having pigment 

 under the fourth finger and under the metatarsal region of the fourth 

 and fifth toes, in the presence of brown patches on each side and below 

 the vent, and in lacking the clear white, black-encircled, distinct, 

 scattered spots on the back. 



Description. — BM 1913.11.12.126, from Pena Lisa, Condoto, 

 Choc6, Colombia. Vomerine teeth in two small, slightly elongate 

 series, the outer ends more anterior so that together they form a 

 broken x/ between the moderate-sized, squarish choanae; tongue 

 half as wide as mouth opening, elongate, its posterior border ex- 

 tensively free and deeply notched. Snout rather small, broadly 

 triangular when viewed from above, sloping in profile, the upper jaw 

 not projecting beyond lower; nostrils more lateral than superior, 

 very slightly projecting, a little closer to tip of upper lip than to eye, 

 separated from each other by an interval slightly less than their 

 distance from eye. Can thus rostralis slightly defined; loreal region 

 somewhat concave and nearly vertical. Eye moderate, not particu- 

 larly prominent, its dismeter equal to its distance from nostril; pupil 

 vertical; palpebral membrane not reticulate; interorbital distance 

 slightly greater than width of upper eyelid, which is not particularly 

 wide and about equal to distance between nostrils. Tympanum very 

 distinct, about three-fifths the diameter of eye and nearly in contact 

 with it. Fingers extensively webbed, web reaching middle of penulti- 

 mate phalanx on lateral side of fourth finger, which is considerably 

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

 than covers the tympanic area; no projecting rudiment of a poll ex; 

 a well-developed ulnar ridge extending from tip of fourth finger 

 along outer arm to elbow. Toes more than one-half webbed, the web 

 on fourth toe reaching the middle of the antepenultimate phalanx, 

 third and fifth toes subequal, disk of fourth toe practically covering 

 the tympanic area; first toe shorter than second, not opposable; a 

 distinct oval inner and a very small but distinct rounded outer meta- 

 tarsal tubercle; a well-developed tarsal ridge extending from tip of 

 fifth toe along outer margin of foot to heel where it terminates in a 

 prominent triangular dermal appendage. Body elongate, in post- 



