176 U.S. NATIONAL MUSEUM BULLETIN 288 



Description. — MLS 268 (holotype), from Paramo de Tama, 

 Norte de Santander, Colombia. Vomerine teeth in two small, oval 

 series lying on a level with the posterior borders of the small, rounded 

 choanae; tongue three-fourths as wide as mouth opening, rounded, its 

 posterior border free and with a short but acute notch. Snout short, 

 rounded when viewed from above, nearly truncate in profile but 

 sloping slightly posteriorly from the vertical; the upper jaw not 

 extending appreciably beyond lower; nostrils more anterior than 

 superior or lateral; not projecting, their distance from end of snout 

 about one-sixth that from eye, separated from each other by an interval 

 equal to about one-third their distance from eye. Canthus rostralis 

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

 not flaring out strongly below it. Eye small, not prominent, its di- 

 ameter equal to its distance from nostril; interorbital distance slightly 

 more than twice the width of upper eyelid, which is relatively narrow, 

 but slightly greater than distance between nostrils. Tympanum 

 distinct, about one-third the diameter of eye, separated from eye by a 

 distance nearly equal to twice its own diameter. Fingers entirely 

 free, fourth finger considerably longer than second, reaching to disk 

 of third which covers the tympanic area; a rounded but not spined 

 rudiment of a pollex. Toes slightly less than one-half webbed, web 

 extending to middle of antepenultimate phalanx of fourth; third and 

 fifth toes equal, disk of fourth toe about covering the tympanic area; 

 metatarsal tubercle not distinct; no tarsal ridge; a weakly developed 

 dermal appendage on heel. Body not elongate, in postaxillary region 

 much broader than greatest width of head; when hind leg is adpressed, 

 heel reaches to middle 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 distinctly. No patagium. Skin of upper 

 parts highly smooth. A dorsal pouch present which opens posteriorly 

 by a vertical, slit-like opening. No narrow glandular ridge encircling 

 upper part of tympanum; skin of throat, chest, belly, and lower femur 

 uniformly and very finely granular; no traces of a skinfold across the 

 chest; without a flat, bony intersquamosal plate forming a straight 

 margin at the back of the skull; skin of head not co-ossified with skull 

 but roof of skull exostosed; no vocal sac apparent. 



Dimensions. — Head and body, 62.2 mm.; head length, 20.7 mm,; 

 head width, 25.2 mm. ; femur, 33 mm. ; tibia, 35. 1 mm. ; foot, 48.5 mm. ; 

 hand 21.5 mm. 



Color in alcohol. — A handsome frog with a dorsal ground color of 

 cream with the following dark brown dorsal pattern: a fine line from 

 the tip of the snout passing dorsally and forking to pass through each 

 nostril, then posteriorly through the lower margin of the upper eyelid, 

 thence posteriorly above the tympanum to the shoulder region where 



