BARBOUR AND NOBLE: LIZARDS OF THE GENUS AMEIVA. 429 



Ameiva dorsalis Gray. 



Descriptio7i: — Adult male; M. C. Z. 7334. Kingston, Jamaica; 

 1908; T. Barbour. 



Rostral forming an acute angle behind; nostril on the posterior 

 border of the anterior nasal; anterior pair of nasals just in contact 

 behind rostral; frontonasal as long as wide, in contact with the loreal; 

 prefrontals just in contact; frontal in contact with the first and second 

 supraoculars; a pair of frontoparietals in contact with the third 

 supraocular anteriorly; five occipitals in a transverse row, the two 

 in contact with the median largest; seven and eight supraciliaries; 

 three supraoculars, the first separated from the loreal; last two 

 supraoculars separated from the supraciliaries by one or two rows of 

 granules; posterior supraocular separated from the outer occipitals by 

 two rows of large granules and a group of smaller ones; six large 

 supralabials; five or six large inf ralabials ; between infralabials and 

 chin-shields a w^edge of one to three granules extending anteriorly to 

 the postmental; chin and throat covered with minute granules, an 

 indistinct band of a trifle larger ones extending across the middle, on 

 the area between the two throat folds several rows of large hexagonal 

 scales; under side of the body with ten longitudinal and thirty-five 

 transverse rows of plates; preanal plates three, the median forming a 

 triangle, two smaller ones at the basal angles; on the lower arm a 

 double row of antebrachials, one very wide, both breaking up into 

 granules near the elbow joint; on the upper arm a single row of nar- 

 rower, more spherical brachials not continuous with the antebrachials, 

 on the posterior side near the elbow a row of enlarged postbrachials ; 

 under side of the thigh covered with four or five series of hexagonal 

 plates of which the outer series is considerably larger than the others ; 

 twenty -one and twenty-two femoral pores; on the under side of the 

 tibia two rows of plates, the outer ones being twice as large as the 

 inner; upper side of the wrist with a regular series of transverse plates 

 corresponding to the inner and outer metatarsals; outer toe extending 

 a trifle further than the inner; tail covered with straight keeled scales; 

 about forty scales in the fifteenth ring from the base. 



Coloration: — Ground color of dorsal surface olive varying to blue 

 posteriorly; a pale light blue stripe in the middorsal region beginning 

 just behind the occiput and gradually widening to the tail; on the 

 sides a double row of light spots somewhat confluent into two longi- 

 tudinal stripes; a series of black confluent blotches among the lateral 

 stripes ; ventral aspect light yellow-blue anteriorly, varying posteriorly 

 into a checker pattern of dark ultramarine and light yellow-blue spots 

 especially distinct laterally. 



