190 U.S. NATIONAL MUSEUM BULLETIN 2 88 



upper jaw, and a transverse, horizontal glandular white line above 

 the vent. 



The combination of size, white border to upper jaw, and white 

 line above the vent serves at a glance to distinguish this species 

 from any other Colombian Hyla. 



Description. — USNM 152036, from La Providencia, Rio Orteguaza, 

 Caqueta, Colombia. Vomerine teeth in two long angulate series, lying 

 between the very elongate choanae; tongue three-fourths as wide 

 as mouth opening, broadly cordiform, its posterior border slightly 

 free and shallowly notched. Snout elongate, rather pointed when 

 viewed from above, pointed in profile, the upper jaw extending 

 somewhat beyond lower. Nostrils entirely lateral, not projecting, 

 their distance from end of snout slightly more than one-third that 

 from eye, separated from each other by an interval equal to about 

 two-thirds their distance from eye. Can thus rostralis strongly defined; 

 loreal region slightly concave and nearly vertical, the upper lip 

 not flaring out appreciably below it. Eye neither large nor prominent, 

 its diameter about three-fourths its distance from nostril; palpebral 

 membrane not reticulate; interorbital distance greater than width 

 of upper eyelid, which in turn is about the distance between nostrils. 

 Tympanum very distinct, about three-fifths the diameter of eye, 

 separated from eye by a distance equal to one-half its own diameter. 

 Fingers with a trace of web at base, web just reaching base of ante- 

 penultimate phalanx on lateral side, fourth finger considerably longer 

 than second, reaching to disk of third which covers about one-third 

 the tympanic area; no projecting rudiment of a pollex; a weak ulnar 

 ridge. Toes slightly more than one-half webbed, the web on fourth 

 toe reaching distal end of the antepenultimate phalanx, third and 

 fifth toes subequal, disk of fourth toe covering about one-third the 

 tympanic area; a distinct oval inner but no distinct rounded outer 

 metatarsal tubercle; no tarsal ridge; no dermal appendage on heel. 

 Body elongate, in postaxillary region a little narrower than greatest 

 width of head; when hind leg is adpressed, heel reaches well beyond 

 tip of snout; when limbs are laid along the side, knee reaches axilla; 

 when hind legs are bent at right angles to body, heels overlap greatly. 

 No patagium. Skin of upper parts very finely granular; a narrow but 

 distinct glandular ridge passes transversely above the vent and 

 similar but less distinct transverse ridges rim across each heel. A 

 rather narrow glandular ridge passing above tympanum then con- 

 tinuing above shoulder as a short dorsolateral fold. Skin of throat 

 and chest smooth, that of belly and lower surface of thigh uniformly 

 and finely granidar; no traces of a skinfold across chest; adult male, 

 vocal sac subgular and but slightly apparent. Skin of head not co- 

 ossified with skull, roof of skull not exostosed. 



