BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 439 
AMEIVA EXSUL Cope. 
Description:— Adult male; M. C. Z. 2746. St. Thomas, D. W. I.; 
1872; L. Agassiz. 
Rostral forming an acute angle behind; nostril between the two 
nasals; anterior pair of nasals narrowly 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 supra- 
oculars, just touching the third; a pair of frontoparietals in contact 
with the third supraocular anteriorly; five occipitals in a transverse 
row, the median largest; six or seven supraciliaries; four supraoculars, 
the first separated from the loreal; three posterior supraoculars 
separated from the supraciliaries by a double row of granules; last 
supraocular separated from the outer occipitals by three rows of 
granules; six large supralabials; five large infralabials; between the 
infralabials and chin-shields a wedge of from one to three granules 
extending anteriorly nearly to the postmental; chin and throat 
covered with minute granules, a faintly indicated band of slightly 
larger ones extending across the middle in which again the median 
ones form an ill-defined central group of somewhat enlarged scales; 
on the area between the two throat folds several rows of larger hex- 
agonal scales; under side of the body covered with ten longitudinal 
and thirty-five transverse rows of plates; three large preanal shields 
forming a triangle; on the lower arm a series of very wide plates 
decreasing in width toward the elbow joint to form several rows of 
smaller hexagonal scales; on the upper arm a similar but narrower 
series of brachials not continuous with the antebrachials; on the 
posterior side near the elbow a small group of enlarged scales; under 
side of thighs covered with six or seven series of hexagonal plates of 
which three rows are considerably larger than the others; fourteen 
to fifteen femoral plates; on the under side of this tibia two rows of 
plates, two plates of the outer row enormously enlarged; upper side 
of the wrist with a regular series of transverse plates corresponding 
to the inner and outer metatarsals; outer toe extending about as far 
as the inner; tail covered with straight, keeled scales; about forty- 
three scales in the fifteenth ring from the base. 
Coloration: — Ground tone of dorsal surface dull olive-green becom- 
ing more olive on the head and grayer on the tail; posterior part of 
the back with slight traces of black penciling; flanks, sides and upper 
surfaces of legs, and sides of tail spotted with pale blue-green, the spots 
arranged mostly in a series of transverse rows; on each flank a series 
of large irregular black spots; ventral surface straw-color, grayer on 
gulars, suffused along the sides with turquoise-blue. 
