248 3. IGUANID& 



separated from f rentals and f rontoparietals by one series of 

 small plates or granules; superciliaries long, narrow and 

 projecting. Central subocular very long, narrow and 

 strongly keeled. Rostral and supralabials long and low; six 

 supralabials. Symphyseal small, followed on each side by 

 a series of five or more large plates which (except first) 

 are separated from the infralabials by one or two series of 

 sublabials. Gular region covered with smooth, hexagonal 

 or rounded scales, changing to granules on the sides of the 

 neck and to larger imbricate scales on the strong gular fold, 

 largest on the denticulate edge of gular fold where larger 

 than scales on belly. A group of enlarged plates in front 

 of ear-opening. Ear denticulation very long, of three 

 scales, largest equalling or exceeding largest plate in front 

 of ear. Back covered centrally with nearly uniform imbri- 

 cate, keeled scales which change gradually to granules on 

 neck and sides of body, and become mucronate posteriorly. 

 Scales largest on tail, strongly imbricate, strongly keeled 

 and mucronate above and on sides. Posterior surfaces of 

 thighs and arms covered with small granular scales similar 

 to those on sides of body; other surfaces of limbs provided 

 with imbricate scales, keeled on upper surfaces of arm, fore- 

 arm, thigh, leg, and foot; adpressed forelimb not reaching 

 insertion of thigh. Femoral pores 12 to 15. Seventeen to 

 23 of largest dorsals equaling shielded part of head. 



The head is grayish olive above. The central portions 

 of the neck and back are dark brown with two series of 

 rather indefinite darker brown blotches, each bordered be- 

 hind and sometimes laterally by pale blue scales. There 

 are some scattered pale blue dots on the back and on the 

 upper surfaces of the limbs and tail. The tail is marbled 

 with brown and blue. The sides are mottled with brown 

 and pale bluish or greenish yellow, forming stripes on the 

 sides of the neck. The chin and gular regions are indigo, 



