434 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Rostral forming a trifle more than a right angle behind; nostril 
on posterior part of anterior nasal; anterior pair of nasals broadly in 
contact behind rostral; frontonasal longer than wide in contact with 
the loreal; prefrontals broadly in contact; frontal in contact with the 
first and second supraoculars; a pair of frontoparietals in contact 
with the third supraocular for their entire length; five occipitals in a 
transverse row, the two in contact with the median largest, seven 
supraciliaries; three supraoculars, the first separated from the loreal; 
two posterior supraoculars separated from the supraciliaries by a 
single, part double row of granules, last supraocular separated from 
the outer occipitals by two rows of granules and a small scale; five 
large supralabials; five large infralabials; between infralabial and 
chin-shields a wedge of one to three rows of granules extending an- 
teriorly to the postmental; chin and throat covered with minute 
granules, a band of somewhat larger ones extending across the middle; 
on the area between the two throat folds a few rows of large hexagonal 
seales; under side of body with eight longitudinal rows (ten including 
the small scales), and thirty-four transverse rows of scales; preanal 
plates in a triangular group of three large plates, anteriorly two smaller 
plates in a transverse line; on the lower arm a double row, one very 
wide, of antebrachials decreasing in width toward the elbow joint; 
on the upper arm a similar but narrower single row of plates continuous 
with the antebrachials; on the posterior side near the elbow a small 
group of slightly enlarged postbrachials; under side of the thighs 
covered with four or five rows of hexagonal plates of which the outer 
series is considerably larger than the others; fifteen femoral pores; 
on the under side of the tibia two rows of plates, those of the outer 
much the larger; upper side of the wrist with a regular series of trans- 
verse plates corresponding to the inner and outer metatarsals; outer 
toe extending about as far as the inner; tail covered with keeled, 
oblique scales dorsally, with smooth straight scales laterally and 
ventrally; about twenty-eight scales in the fifteenth ring from the 
base. 
Coloration: — Ground color of dorsal surface very dark olive-gray, 
head slightly darker; flanks black; two rather widely separated, 
narrow white bands on each side, the superior starting from the 
supraciliaries and the inferior from the ear, both extending half way 
down the tail; a row of indistinct white spots between these white 
stripes; lower flanks profusely spotted with white or bluish, the spots 
arranged more or less in vertical rows; ventral surface pale straw- 
color suffused with dull blue-gray, edges of the shield lightest; chin- 
shields and under sides of legs more straw-color. 
Variation: — A female (M. C. Z. 8693, same data as above) is 
similar to the male except that there are no white spots on the lower 
flanks. A young specimen (M. C. Z. 8742, Manneville, Haiti, 1913, 
