FROGS OF COLOMBIA — COCHRAN AND GOIN 179 



Description of holotype. — Vomerine teeth in two moderately large 

 somewhat transverse series, lying close together on a level with the 

 posterior borders of the small, rounded choanae; tongue two-thirds 

 as wide as mouth opening, broadly cordiform, its posterior border 

 slightly free and very shallowly notched. Snout not large, rounded 

 when viewed from above, truncate but slightly sloping in profile, 

 the upper jaw extending very little beyond lower; nostrils more lateral 

 than superior, considerably projecting, their distance from end of 

 snout about one-third that from eye, separated from each other by 

 an interval equal to about two-thirds their distance from eye. Canthus 

 rostralis well defined; loreal region flat and nearly vertical, the upper 

 lip flaring out but slightly below it. Eye neither large nor prominent, 

 its diameter equal to its distance from nostril; palpebral membrane not 

 reticulate; interorbital distance one-third greater than width of upper 

 eyelid, which is in turn about equal to the distance between nostrils. 

 Tympanum very distinct, about two-thirds the diameter of eye, 

 separated from eye by a distance nearly equal to its own diameter. 

 Fingers with but a trace of web at base, fourth finger considerably 

 longer than second, reaching beyond middle of disk of third which 

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

 ridge. Toes less than one-half webbed, the web on fourth toe reaching 

 the distal end of the preantepenultimate phalanx, third and fifth toes 

 subequal, disk of fourth toe just covering 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 nearly equal to 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 overlap 

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

 appreciably. No patagium. Skin of upper parts finely granular. 

 An incipient marsupium discernible in supra-urostylic region. A fairly 

 distinct glandular ridge encircling upper part of tympanum ; skin of 

 throat and chest finely granular, that of belly and lower surface of 

 thigh uniformly more distinctly so. The granules on the undersurface 

 of the proximal two-thirds of the thigh much finer than those adjacent 

 to them and to those on the belly, thus forming a rather distinctive 

 patch. Skinfold across chest a heavy pectoral fold; adult male, vocal 

 sac not pronounced. Skin of head not co-ossified with skull, roof of skull 

 strongly exostosed. 



Dimensions. — Head and body 66.4 mm.; head length, 22.3 mm.; 

 head width, 25.5 mm.; femur, 32.3 mm.; tibia, 36.5 mm. ; heel-to-toe, 

 50.5 mm.; hand. 25.5 mm. 



Color in alcohol, — In preservative this is a black frog with ex- 

 tremely numerous small yellowish white spots about one millimeter 



