112 Mr. J. E. Gray on Reptiles 



the crest consists of two series of elongate scales ; those on the chin 

 are much larger than those on the belly. 



'• Found always basking on the trunks of trees in forests near the 

 sea side on the north coast of Cuba. It generally basks with its head 

 downwards and is exceedingly alert. It will live in confinement." — 

 W. S. M. 



IV. Anolis. 



The penultimate joint of the toes dilated. Back and nape simple 

 or with a low crest formed of two diverging series of short triangular 

 scales. Ventral scales flat, imbricate. 



The specimens of this genus which we have in the British Museum 

 may be thus divided into groups and described. 



A. Crest produced along the back. 



a. Tail much compressed, irregularly serrated above. Ventral scales 

 square, smooth. 



1 . Anolis maculatus. Scales of the back convex, of the sides smaller, 

 granular ; blueish, black-spotted; lips, streak over ears and shoulders 

 white ; and a streak from the back of the eyes, over the ears black. 



Inhab. . 



b. Tail compressed, regularly serrated above, and many keeled beneath. 

 Ventral scales ovate, keeled. 



2. Anolis occipitalis. Scales of the back many-sided, keeled, of the 

 sides smaller, elongate ; brown, beneath blueish- white ; occipital pit 

 large, rounded, toothed, head shields smooth. 



Inhab. West Indies. Presented by Thomas Bell, Esq. 



c. Tail sub compressed, slightly serrated above. Ventral scales 

 square, smooth. 



3. Anolis similis. Scales of the back rather convex, of the sides 

 rather smaller ; olive green with a few black spots ; head shields 

 rather convex. 



Inhab. . 



4. Anolis Alligator (Dumeril and Bibron, iv. 134 ?). Scales of the 

 back polygonal, nearly flat, of the sides smaller ; green scattered 

 with white spots ; head shields flat with two series of large close 

 transverse convex shields between the eyes. 



Inhab. . 



B. Crest only on the nape or wanting. 

 a. The ventral scales ovate, keeled. 



* Tail roundish without any central crest. 

 6 . Anolis porcatus. Scales of the back moderate, hexangular, keeled, 



