174 U.S. NATIONAL MUSEUM BULLETIN 288 



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

 palpebral membrane not reticulate; interorbital distance slightly- 

 greater than width of upper eyelid, which is about equal to distance 

 between nostrils. Tympanum very distinct, about one-half the 

 diameter of eye, separated from eye by a distance equal to its own 

 diameter, bordered above by a bony shelf. Fingers unwebbed, fourth 

 ringer slightly more than a disk longer than second, reaching to disk 

 of third which slightly more than covers the tympanic area; no 

 projecting rudiment of a pollex; no ulnar ridge. Toes slightly more 

 than one-third webbed, the web on fourth toe just reaching the base 

 of the antepenultimate phalanx, third and fifth toes subequal, disk of 

 fourth toe just covering the tympanic area; a distinct oval inner and 

 a smaller, indistinct rounded outer metatarsal tubercle; no tarsal 

 ridge; no dermal appendage on heel. Body not elongate, in post- 

 axillary region a little narrower than greatest width of head; when 

 hind leg is adpressed, heel reaches almost to anterior margin of eye; 

 when limbs are laid along the side, knee and elbow fail to meet; when 

 hind legs are bent at right angles to body, heels meet snugly. No 

 patagium. Skin of upper parts rather smooth. An incipient pouch on 

 the posterior portion of the dorsum. A rather narrow glandular ridge 

 supported by a bony shelf passing above upper part of tympanum. 

 A distinct nuchal dermal fold; skin of throat and chest smooth, that 

 of belly and lower surface of thigh uniformly and very finely granular, 

 a skinfold across chest. Adult male, vocal sac apparently internal. 

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

 A frontoparietal-squamosal arch which is complete to the rear of the 

 skull. 



Dimensions. — Head and body, 62.7 mm.; head length, 22.1 mm.; 

 head width, 23.4 mm.; femur, 27.3 mm.; tibia, 29.2 mm.; heel-to-toe, 

 43.7 mm.; hand, 21.8 mm. 



Color in alcohol. — Pale brown above, cadaverish brown below. Side 

 between axilla and groin moderate brown with a few, indistinct, pale 

 flecks in the brown area just anterior to groin. Anterior and posterior 

 faces of thighs similar in color to the side, the pale flecks being better 

 developed but by no means conspicuous. Underside of chin and throat 

 a little darker than belly. 



Remarks. — The paratype is a large female with the following 

 millimeter measurements: head and body, 74.8; head length, 25.2; 

 head width, 29.5; femur, 33.2; tibia, 37.5; heel-to-toe, 54.4; hand, 

 25.5. Top of head and dorsum are pale brown without any discrete 

 pattern. On each side behind the tympanic region is an area of dark 

 brown that breaks up posteriorly into a series of dark mottlings along 

 the side. Posterior surfaces of thighs are dark brown with mottlings 



