212 U-S. NATIONAL MUSEUM BULLETIN 288 



somewhat rounded when viewed from above, truncate in profile, the 

 upper jaw not extending appreciably 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 nearly equal their distance from eye. Canthus rostralis 

 well defined; loreal region concave and somewhat oblique, the upper 

 lip flaring out moderately below it. Eye moderate, not particularly 

 prominent, its diameter equal to its distance from nostril; palpebral 

 membrane not reticulate; interorbital distance slightly greater than 

 width of upper eyelid, which is in turn about equal the distance 

 between nostrils. Tympanum very distinct, about two-thirds the 

 diameter of eye, separated from eye by a distance equal to one-half 

 its own diameter. Fingers webbed at base, web on third finger reaching 

 middle of antepenultimate phalanx, fourth finger considerably longer 

 than second, reaching to middle of disk of third which just covers 

 the tympanic area; no projecting rudiment of a pollex; no ulnar ridge. 

 Toes nearly completely webbed, the web on fourth toe reaching the 

 middle of the penultimate phalanx, then continuing as narrow margin 

 to base of disk; third and fifth toes subequal, disk of fourth toe 

 covering about four-fifths 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 moderately 

 elongate, in postaxillary region a little narrower than greatest width 

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

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

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

 greatly. No patagium. Skin of upper parts smooth; a strongly devel- 

 oped narrow glandular ridge encircling upper part of tympanum; 

 skin of throat and chest very finely granular, that of belly and lower 

 surface of thigh uniformly and rather coarsely granular; no traces 

 of a skinfold across chest; adult female, no vocal sac. Skin of head not 

 co-ossified with skull, roof of skull not exostosed. 



Dimensions. — Head and body, 64.1 mm.; head length, 22 mm.; 

 head width, 23.3 mm.; femur, 33.3 mm.; tibia, 38.5 mm.; heel-to-toe, 

 50.8 mm.; hand, 22.3 mm. 



Color in alcohol.— A moderate brown frog with a dorsal pattern 

 consisting of dark brown blotches. On posterior portion of trunk 

 and on forearms, legs, and feet the dorsal blotches are outlined with 

 a narrow pale margin of tan, but the blotches on anterior portion 

 of trunk and on top of head are smaller than the more posterior ones 

 and are not margined with a lighter tone. Along each side between 

 axilla and groin the ground color is much lighter than elsewhere, 

 a dirty gray, and here there are a number of smaller, rather distinct, 

 black spots. The chin, throat, and chest are fuscous. 



