84 U.S. NATIONAL MUSEUM BULLETIN 2 88 



it. Eye very small, not prominent, its diameter equal to its distance 

 from nostril; interorbital distance nearly twice internarial distance. 

 No exposed tympanum; fingers without a trace of web, fourth finger 

 slightly longer than second; no projecting rudiment of a poll ex. Toes 

 about one-half webbed, the web on fourth toe reaching the base of 

 the antepenultimate phalanx, third toe much longer than fifth; an 

 oval inner but no apparent outer metatarsal tubercle; no tarsal ridge; 

 no dermal appendage on heel. Body stubby, in postaxillary region 

 probably twice width of head ; when hind leg is adpressed, heel reaches 

 to anterior part of shoulder region; when limbs are laid along the 

 side, knee and elbow fail to meet; when hind legs are bent at right 

 angles to body, heels fail to meet. Skin of upper parts quite smooth, 

 a transverse skinfold across back of head which continues downward 

 over shoulder region to inner side of elbow; skin of throat and chest 

 smooth, that of belly and lower femur also smooth; no skinfold 

 across the chest; no inguinal gland; no vocal sac apparent. 



Dimensions. — Head and body, 43.3 mm.; head length, 12 mm.; 

 interorbital width, 6.6 mm.; femur, 17.6 mm.; tibia, 16.7 mm.; foot, 

 24.7 mm.; hand, 11 (±) mm. 



Color in alcohol. — Pale brown above, a much darker brown below, 

 with a sharp line of demarcation between the two. The demarcation 

 starts at the nostril, passes through the eye and just behind the fold 

 to the inner side of the elbow, thence out along the dorsal surface 

 of the forearm to the inner side of the third finger; the tops of third 

 and fourth fingers have the dorsal ground color. The line of demarca- 

 tion then runs from the outer side of the little finger around the 

 elbow to the axilla, along the side to the groin, along the face of the 

 thigh and shank, thence along the foot to the base of the fifth toe; 

 posteriorly it runs through the vent, along the posterior surface of 

 the thigh to the inner side of the knee, thence to the ankle and along 

 the margin of the fifth toe to its tip. Thus the dorsal surface of the 

 fifth toe is the only one with dorsal ground color. Above, the only 

 pattern is a very thin pale hairline running from tip of snout to vent. 

 Below, the entire ventral surface is flecked with pale spots, these 

 being a little larger on the breast. The dark ground color on the 

 inner face of shank and inner face of ankle is heavily marbled with 

 white. 



Remarks. — Specimen FM 357 from Serrania de La Macarena 

 confirms that Ctenopkryne geayi is in reality a Colombian species and 

 adds additional credibility to the type locality as cited by Mocquard. 

 Dunn (1949, p. 18) has pointed out that the Rio Sarare actually 

 arises on the southeast slope of Paramo de Tama in Norte de Santander 

 and flows for about eight miles through Colombian territory before 

 it crosses into Venezuela. It is Dunn's supposition that the type 



