406 U.S. NATIONAL MUSEUM BULLETIN 2 88 



blunt; loreal region slightly concave, sloping outwards to the upper 

 lip. Eye large, prominent, its diameter equal to its distance from tip 

 of snout; interorbital diameter 1% times that of upper eyelid, consider- 

 ably greater than interval between the nostrils. Tympanum distinct, 

 its greatest diameter about two-fifths that of eye, separated from eye 

 by an interval equal to two-thirds its own diameter. Fingers moder- 

 ately long, with lateral ridges, free, disks of three outer fingers rather 

 large, truncate, first finger much shorter than second, fourth longer 

 than either and reaching nearly to base of disk of third, which covers 

 about two-thirds the tympanum; a distinct oval thumb pad present; 

 a bifurcate palmar callus; metacarpal tubercles well developed. Toes 

 rather short, slightly webbed, third toe much shorter than fifth, the 

 disk of which reaches to base of penultimate phalanx of fourth; disk 

 of fourth toe just covering the tympanum, and larger than that of 

 third finger; a small but distinct oval inner metatarsal tubercle and 

 a less apparent round outer one; a heavy tarsal ridge, ending just 

 before reaching the heel; a heavy skinfold on heel and knee. Body 

 fairly stout, in postaxillary region a little narrower than greatest 

 width of head. When hind leg is adpressed, heel reaches posterior 

 border of tympanum; when limbs are laid along the sides, knee and 

 elbow are well separated; when hind legs are bent at right angles to 

 body, heels overlap slightly. Skin of upper parts finely shagreened, 

 with some small granules on the sacrum and larger ones on the sides 

 arranged in incomplete longitudinal rows; belly coarsely granular, 

 chin and chest nearly smooth, lower surface of femur finely granular; 

 a very heavy glandular ridge from posterior corner of eye, above 

 tympanum, ending above shoulder, and some oval glands below it 

 behind tympanum; a heavy skinfold across chest; a slight ventral 

 disk; a large external median vocal sac in the male with characteristic 

 folds (see illustration). 



Dimensions. — Head and body, 32 mm.; head length, 10 mm.; head 

 width, 11 mm.; femur, 11.5 mm.; tibia, 13 mm.; foot, 12.5 mm.; 

 hand, 8 mm. 



Color in alcohol. — Dorsum chocolate with a narrow middorsal buff 

 line, and three clove brown longitudinal stripes on either side, the 

 outermost dorsolateral in position; sides burnt umber with darker 

 spots covering the heavy glandules; front of groin and rear of axilla 

 immaculate ochre yellow, this tone lightening and blending with 

 the uniform immaculate buff of the venter; side of head sepia, with a 

 darker line below the canthus and another paralleling the edge of the 

 lip; upper leg surfaces walnut brown, with three irregular clove brown 

 crossbands; posterior femur raw sienna, the glandules slightly darker; 

 palms of hands and soles of feet buff below inner digits, becoming 

 drab on outer ones, the disks a little darker. 



