166 U.S. NATIONAL MUSEUM BULLETIN 2 88 



Description oj holotype. — Vomerine teeth in two rounded patches, 

 lying close together between the posterior borders of the small, 

 rounded choanae; tongue two-fifths as wide as mouth opening, 

 rounded, its posterior border free and unnotched, Snout moderate, 

 rounded when viewed from above, truncate in profile, the upper jaw 

 extending hardly at all beyond lower; nostrils lateral, not projecting, 

 their distance from tip of upper jaw about equal that from eye, 

 separated from each other by an interval equal to about two-thirds 

 their distance from eye. Can thus rostralis sharply defined; loreal 

 region concave and nearly vertical. Eye moderate, not prominent, 

 its diameter one-third again as great as its distance from nostril; 

 palpebral membrane not reticulate; interorbital distance slightly 

 greater than width of upper eyelid at its base. Upper eyelid developed 

 into an elongate, warty, pointed superciliary process. Tympanum 

 distinct but inconspicuous, its long diameter about one-half the 

 diameter of eye, separated from eye by a distance nearly equal to 

 its own long diameter. Fingers un webbed, fourth finger considerably 

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

 twice the size of the tympanic area; no projecting rudiment of a 

 pollex; a low but distinct, warty ulnar ridge. Toes webbed at base 

 between third and fourth and fourth and fifth, web not quite reaching 

 base of antepenultimate phalanx of fourth toe. Third toe distinctly 

 shorter than fifth, disk of fourth half again as large as the tympanic 

 area; a distinct but minute oval inner metatarsal tubercle; no distinct 

 outer tubercle, no distinct tarsal ridge; a well-developed, elongate 

 dermal appendage on heel. Body somewhat elongate for a Oastrotheca, 

 in postaxillary region distinctly narrower than greatest width of head ; 

 when hind leg is adpressed, heel reaches slightly beyond tip of snout; 

 when limbs are laid along the side, knee and elbow overlap con- 

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

 overlap greatly. No patagium. Skin of upper parts coarse and glandular. 

 Upper eyelids bearing triangular, warty, "horns"; the dorsolateral 

 folds well developed anteriorly and bearing white, triangular, fleshy 

 projections. A bony ridge passes from behind the eye above the 

 tympanum to the point of origin of the soft dorsolateral fold. Skin 

 of throat, chest, belly, and lower surface of thigh uniformly granular, 

 no trace of a skinfold across chest. Adult male, no vocal sac apparent 

 externally. Without a flat, bony intersquamosal plate forming a 

 transverse, nearly straight margin at the back of the skull. Skin of 

 head co-ossified with skull, roof of skull exostosed. 



Dimensions. — Head and body, 55.3 mm.; head length, 20.0 mm.; 

 head width, 25.5 mm.; femur, 31.8 mm.; tibia, 37.3 mm.: heel-to- 

 toe, 51.2 mm.; hand, 23.6 mm. 



