210 3. IGUANID.^ 



of Strongly keeled, short pointed scales, which are much 

 broader above than below 5 every third whorl sometimes 

 larger. Posterior surfaces of thighs and arms covered with 

 small granules similar to those on sides of body. Superior 

 and anterior surfaces of limbs provided with large, more 

 or less distinctly keeled scales. Ventral scales smooth and 

 about size of those on gular fold. Femoral pores varying 

 from 12 to 16 in number on each thigh. Fourteen to 17 

 of largest dorsal scales equaling length of shielded part of 

 head. Tail less than twice as long as head and body. 

 Males with enlarged postanal plates. 



The general color above is grayish or yellowish brown, 

 paler and somewhat ochraceous on the head and the base 

 of the tail, crossed by from six to eight light-edged bars 

 of black or brown. These cross-bars are often very indis- 

 tinct, usually interrupted on the middle of the back, and 

 often alternate with those on the opposite side. The light 

 edgings of the dorsal bars may be either blue, gray or yel- 

 low. The sides are often dotted with one or more of these 

 colors. Narrow dark lines cross the top of the head, the 

 most distinct being on the supraocular and frontal regions. 

 There may be a dark stripe on the side of the neck and 

 head, passing just above the ear-opening, crossing the orbit, 

 and ending at the nostril. The tail is indistinctly ringed 

 with dusky and often tinged with ochraceous. The lower 

 surfaces are white, more or less dotted or suffused with 

 dark brown or black. Males usually have a blue patch on 

 each side of the belly and an area of lemon yellow, blue, 

 orange or green on the center of the throat. 



