FROGS OF COLOMBIA — COCHRAN AND GOIN 



81 



defined; loreal region very slightly concave and nearly vertical, the 

 upper lip flaring out but little below it. Eye small, not prominent, its 

 diameter equal to its distance from nostril; palpebral membrane not 

 reticulate; interorbital distance about one-third the width of upper 

 eyelid, which is relatively narrow and distinctly less than distance 

 between nostrils. Tympanum practically concealed, just barely dis- 

 cernible at the surface on the right side, concealed on the left. Fingers 

 without a trace of web at base, fourth finger a phalanx longer than 

 second, just reaching to base of terminal phalanx of third, tips without 

 digital expansions; no projecting rudiment of a pollex; no ulnar ridge. 

 Toes slightly more than one-half webbed, the web on fourth toe reach- 

 ing the base of the antepenultimate phalanx, third toe much longer 

 than fifth; no metatarsal tubercle apparent; no tarsal ridge; no dermal 

 appendage on heel. Body rather elongate, in postaxillary region a 

 little wider than greatest width of head; when hind leg is adpressed, 

 heel reaches almost to angle of jaw; when limbs are laid along the side, 

 knee and elbow meet; when hind legs are bent at right angles to body, 



Figure 3. — Glossosloma aterrimum, CNHM 63849 (same size). 



