190 3. IGUANID.^ 



Description. — Head broad, short, and depressed, snout 

 short and truncate. Nostrils large, superior, and much 

 nearer to end of snout than to orbit. Ear-opening large, 

 with anterior denticulation of three pointed scales. Head 

 scales smooth, slightly convex anteriorly. Rostral very 

 broad and low, with a median superior projection. Frontal 

 transversely divided. Largest supraoculars separated from 

 frontals, frontoparietals, and parietals, by two series of 

 small plates. Interparietal very large. Five superior and 

 seven inferior labials to below middle of eye. Several 

 series of enlarged sublabials. Gular region covered with 

 small granules, slightly largest centrally. A weak anterior 

 gular fold followed by a strong posterior foldj latter covered 

 with small subgranular plates, the largest of which, on its 

 edge, are about equal in size to the first scales on chest. Back 

 and sides covered with round granules, larger medially than 

 laterally. Tail somewhat depressed and expanded at its 

 base, and covered with whorls of small weakly keeled scales. 

 Scales on anterior surfaces of limbs large and weakly keeled. 

 Ventral plates larger than caudals. 



The color above is dull grayish olive, with four very 

 distinct anterior, and three duller posterior, transverse black 

 bands. The tail is similarly barred with dusky. The throat 

 is brownish marked with blackish slate centrally. The chest 

 and abdomen are white clouded with slate. 



Length to anus 103 



Snout to fold 34 



Snout to orbit .— 7 



Snout to ear„. — _ . 22 



Snout to back of interparietal 1 8 



Width of head 18 



Fore limb . . +5 



Hind limb _ 62 



Base of fifth to end of fourth toe 22 



