IGUANID2E. 



33 



cristatellus, but longer and more pointed at the snout ; cheeks 

 and parietal regions swollen, about one and two-thirds 

 times as long as broad, much longer than the tibia; fore- 

 head and occiput slightly concave ; frontal ridges distinct, 

 but not high ; upper head scales not keeled ; scales of the 

 supra-orbital semicircles large, more or less in contact on 

 the median line; eight to twelve enlarged faintly keeled 

 supraoculars, separated from the supraorbitals by a single 

 series ; occipital as large as the ear, separated from the 

 supraorbitals by two or three series of granular scales; 

 canthus rostralis sharp, prominent, of three scales ; loreal 

 rows four to five ; six to seven labials to below the cen- 

 tre of the eye ; ear opening moderate, subelliptical, higher 

 than long. Gular appendage medium, small in the fe- 

 male, smooth scaled. Body compressed; dorso-nnciial 

 fold distinct. Dorsal scales small, keeled, larger in a 

 couple of rows on the dorsal fold ; smaller on flanks ; scales 

 of belly larger, smooth, imbricate, posterior margin 

 rounded : antefemorals still larger, keeled, five or six near 

 the knee about twice as broad as long, with several keels. 

 Limbs moderate, the adpressed hind limb reaches the eye ; 

 digital expansions rather large, lamellae under phalanges 

 ii and iii of the fourth toe about twenty-eight. Tail com- 

 pressed, with a low crest of subequal compressed scales, 

 one of each four being a trifle larger and marking the seg- 

 ments, less than twice as long as head and body. Male 

 with enlarged post-anal scales. 



Grayish olive to olivaceous or reddish brown, with or 

 without specks of light color on flanks and legs. With in- 

 distinct cloudings of darker, forming transverse bands on 

 the tail and frequently also on the body. Ventral sur- 

 face whitish ; throat, at sides of the gular fold, darker. 



Hub. Redonda. YV\ B. Richardson. 



ESSEX INST. UULLKIIN, Vol.. XIX- 



