446 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Rostral forming an acute angle behind; nostril un the posterior 
border of the anterior nasal; anterior pair of nasals narrowly in con- 
tact behind rostral; frontonasal longer than wide, in contact with 
the loreal; prefrontals broadly in contact; frontal in contact pos- 
teriorly with the first supraocular, for nearly its entire length with the 
second; a pair of frontoparietals separated for their entire length 
from the third supraocular by a double row of granules; eight occipi- 
tals in a transverse row consisting of a median pair and a group of 
three on either side; four supraoculars the first separated from the 
loreal; three posterior supraoculars separated from the supraciliaries 
by a single, partly double row of granules; last supraocular separated 
from the outer occipitals by three or four rows of small scales; seven 
large supralabials; five infralabials; between infralabials and chin- 
shields a wedge composed of a single row of granules and small scales 
extending anteriorly to the first chin-shield; chin and throat covered 
with minute granules, a distinct band of larger ones extending across 
the middle of which the median ones form an ill-defined central group 
of slightly larger ones; on the portion between the two throat folds 
several rows of large hexagonal scales; under side of the body with 
twelve longitudinal and thirty-four transverse rows of plates; pre- 
anal plates in a marginal row decreasing in size from the median pair, 
and in a median line one plate larger than the marginal ones, and 
another smaller one in advance of this; on the lower arm one row of 
very wide, and another narrow row of antebrachials breaking up into 
small scales proximally; on the upper arm three rows of brachials 
the median largest; on the posterior side near the elbow joint a group 
of slightly enlarged postbrachials; under side of thighs covered dis- 
tally with four rows of plates, outer row considerably the largest; 
breaking up proximally into ten or twelve narrower rows; twenty- 
four and twenty-five femoral pores; on the under side of the tibia 
three rows of plates, those of the outer row greatly enlarged; upper 
side of the wrist covered with granules; outer toe not extending quite 
so far as the inner; tail covered with straight, keeled scales; about 
thirty-three scales in the fifteenth ring from the base. 
Coloration:— Dorsal surface olivaceous gray, slightly yellowish espe- 
cially on the head and tail; whole upper surface posterior to the shoul- 
ders spotted with pale whitish or yellowish blotches, those of the flanks 
being largest; ventral surface straw-color washed with blue on the belly. 
Variation:— A female (same data as above) differs from the male 
in having fewer spots dorsally. A young specimen (same data) is 
very different from either of the adults. There are seven narrow white 
lines running the length of the upper surface of the body; the two 
outermost on each side border a wide brown band. In place of the 
pale spots of the adult male on the upper surface there are four series 
of black spots between the dorsal stripes. The ventral surface is 
paler and more green than that of the adult. 
