300 3. IGUANID^ 



scales equaling length of shielded part of head. Number 

 of scales in a row from the interparietal plate to a line con- 

 necting posterior surfaces of thighs varying from 35 to 46 

 average in 30 specimens, 41.8. Males with enlarged 

 postanal plates. 



The color above is grayish, brownish, or olive, usually 

 with one series of crescent-shaped or triangular brown spots, 

 edged posteriorly with pale blue or green, on each side. A 

 paler longitudinal band usually separates the dorsal and 

 lateral regions. The sides are brownish or buffy, mottled 

 with darker brown and dotted with green or pale blue. 

 Narrow brown lines cross the head, but are more or less 

 interrupted. A brown line connects the orbit and upper 

 corner of the ear and is continued backward on the neck. A 

 large blue patch on each side of the belly is usually bordered 

 internally by a black band of varying width. The throat 

 is white, more or less dotted or suffused with slate or black, 

 and with or without a blue patch on each side. In highly 

 colored males, the black bands of the belly meet medially, 

 and the throat is intensely black with large round blue 

 patches which sometimes merge on the median line. The 

 chest is white or yellowish, often dotted or suffused with 

 black. The preanal region and the lower surfaces of the 

 limbs are white, sometimes dotted or tinged with slaty-black. 

 The posterior surfaces of the limbs are yellowish, deepest 

 on the thighs, along the back of which runs a dark line. In 

 young, and some females, the green edging of the dorsal 

 spots is replaced by gray or buff. 



