286 U. S. NATIONAL MUSEUM BULLETIN 206 



than second; no prominent poUex, but a wide low palmar tubercle 

 which gives off projections to the three outer digits, and a similar 

 swollen tubercle on outer side of first finger; toes slightly webbed at 

 the base, their disks like those of fingers and similar in size; third 

 and fifth toes subequal, reaching to middle of antepenultimate pha- 

 lanx of fourth; a small sharp oval inner and smaller round outer 

 metatarsal tubercle; a distinct dermal fold along inside of tarsus, and 

 well-marked fringes on fingers and toes (in this specimen) ; when leg 

 is straightened, a heavy skinfold appears at heel and knee. Body 

 somewhat more slender than in E. nasus, in postaxillary region equal 

 to width of head; when hind leg is adpressed, heel reaches to between 

 nostril and tip of snout; when limbs are laid along sides, knee and 

 elbow greatly overlap; when limbs are bent at right angles to body, 

 heels overlap. Skin of upper parts minutely glandular, smooth on 

 back and sides except for the heavy glandular dorsolateral fold which 

 extends backwards from posterior eyelid to groin, and forwards on 

 outer border of eyelid, merging with canthus rostralis. Entire sur- 

 face of limbs smooth excepting for the postanal region and posterior 

 femur, which are minutely granular; throat, chest, and belly perfectly 

 smooth. A pair of very conspicuous external vocal sacs below the 

 outer corner of the lower lip. 



Dimensions. — Head and body 39 mm.; head length 14 mm., width 

 12.5 mm.; femur 19 mm.; tibia 21 mm.; foot 20 mm.; hand 12 mm. 



Color in alcohol. — Ground color above uniform seal brown, lightening 

 somewhat on the limbs ; a white stripe beginning on the tip of the snout, 

 extending on the canthus rostralis and following the glandular fold 

 along the outer eyelid and dorsolateral region, where it widens con- 

 siderably at the groin, and is continued along the anterior femur to the 

 knee, the lower (anterior) margin of this femoral stripe being distinctly 

 set off with a sepia stripe, but posteriorly fading gradually into the 

 color of the upper femur; ventral region pale buff, immaculate except 

 for some small sepia spots on the belly and on the lower tibia; the dark 

 sepia lateral area quite sharply separated from the light belly; posterior 

 femur heavily marbled with sepia and buff, the buff areas tending to 

 form wavy longitudinal lines concentrating below the knee. 



Variations. — The five other males from Bonito are lilce the described 

 specimen, except that they have a medium longitudinal dark stripe 

 on the throat, with some scattered spots on chin and throat as well as 

 on anterior part of belly and latero ventral region. 



Some females display a different coloration; four of the five from 

 this same series are heavily mottled over the entire ventral surfaces, 

 even on the limbs, while the anterior femoral stripe is reduced to a few 

 small, pale, irregular spots, the upper and anterior femur being crossed 

 diagonally by several dark bars. The fifth female is colored like the 



