454 bulletin: museum of comparative zoology. 



same transverse line as the other three; nine supraeiliaries; four 

 supraoculars, first separated from the loreal; three posterior supra- 

 oculars separated from the supraeiliaries by two or three rows of 

 granules becoming fused into a single row anteriorly; last supraocular 

 separated from the outer occipitals by three or four rows of granules; 

 six supralabials ; six and seven inf ralabials ; between the infralabials 

 and chin-shields a wedge of one to three rows of granules and scales 

 extending anteriorly to the first chin-shield; chin and throat covered , 

 with minute granules a scarcely differentiated band of larger ones 

 extending across the throat of which the median group of scutes and 

 two groups anterior to it and on either side of it are composed of the 

 largest granules; on the area between the two throat folds a transverse 

 series of scales, about a dozen of the median scales, in a group, some- 

 what enlarged; under side of the body with eighteen longitudinal and 

 thirty-eight transverse rows of plates; preanal plates small, alrnost 

 granular, in a transverse row of seven or eight scales and in a median 

 row of two or three; on the lower arm three short rows of scales, the 

 outer scales being much divided, all of the scales decrease rapidly in 

 size from the mid-region to the elbow; on the upper arm a series of 

 oblique rows each formed of four scales; on the posterior side near the 

 elbow joint a small group of postbrachials scarcely differentiated in 

 size from the granules of the arm; under side of thighs covered with 

 seven or eight rows distally, with twenty-five or more proximately; 

 thirty-one femoral pores; on the under side of the tibia five rows of 

 scales, the two proximal ones of the outer row considerably larger 

 than the others, the second the larger of the two; upper side of the 

 wTist with a regular series of plates covering the outer edge only; 

 outer toe extending about as far as the inner; tail covered with straight, 

 keeled scales; about forty scales in the fifteenth ring from the base. 



Coloration: — Dorsal surface ashy gray, more bluish on the flanks, 

 slightly more olivaceous on the head and tail; a trace of three indis- 

 tinct stripes of a slightly darker tone of gray running the length of the 

 body along the back; a suggestion of another dark stripe on each side; 

 in places all five of these bands are indistinguishable from the ground 

 tone; ventral surface straw-color or milky encroached upon laterally 

 by the blue of flanks and of the side of head. 



Variation: — Neither of the two females before us show any varia- 

 tion of color from that of the adult male described. In this respect 

 this species is rather peculiar. 



Remarks: — The description was made of an adult that measured 

 one hundred and fifty millimeters from snout to vent. 



Three adult specimens, Icf and 2 9 9 of this species were exam- 

 ined. Their numbers are M. C. Z. 10575-10577. 



Habitat: — Apparently confined to a small low island, known locally 



