214- Mr. Gray's Description of a ficw Genus of Saurian Reptiles. 



anterior major serrata lobiforniis ; capite cristis osseis quatuor 

 tuberculatis, oculi margine superior! posteriori et inferiori 

 semicirculo tuberculorum osseorum cincta. 



Chameeleo Seychellensis, Feron Mss. Kuhl Zool. Beitr. 

 105. 



Icon, . 



Inhab. Seychells Islands. Peron Mss. Paris. 



Fam. AGAMIDiE. 

 Gen. Agama. 



§ 1. Scales keeled ; those of the head similar. Tail uniformly 

 scaly. 



A. siibspinosa, 



Cauda corpore fere duplo longiore ; nucha carinis spinosis ; 

 squamis parvis, dorsi scabris, occipitis magnis ovatis imbri- 

 catis glabris, membrorutn externe cauda?que pra3serlim niajo- 

 ribus carinatis aculeatis. 



Inhab. ? Mm. Britan. 



Length 8 inches ; body 3, tail 5. 



Tail nearly twice as long as the body ; neck with spinous 

 ridges, scales small, those of the upper part of the body rough, 

 upper part of the head large ovate imbricate smooth ; those of 

 the outer sides of the members, especially of the tail, larger, 

 keeled and sharp tipt. 



Most like A 7i. but the tail is shorter, and the scales 



of the head are smooth and white, while in the latter they are 

 tubercular, and the legs are more truly spinous. 



§ 2. Scales keeled, ike head "with a large occipital scale; tail 

 uniformly scaly. 



A. occipitalis. 



Cauda corpore duplo longiore; nucha spinosa; squamis latis 

 ovato-lanceolatis ; aculeatis, caudse membrorumque majori- 

 bus, abdominis parvis quadrangularibus glabris, capitis pler- 

 umque glabris. 



Inhab. ? Mus. Britan. 



Length 10 inches ; body 3^, tail 6\. 



Tail twice as long as the body ; neck with scattered groups 

 of spiny scales ; scales broad, ovate-lanceolate, sharp tipt, 

 those of the taU and outer side of the limbs larger and more 

 prickly; those of the belly small, smooth, quadrangular; 

 those of the head mostly smooth, the largest over the eyes, 

 with a lon"^ central vertebral scale between the nostrils and 

 another over the occiput. The scales of the two central series 

 beneath the tail smallest and unarmed. 



British Museum, July 1, 182/. 



XXXIX. No- 



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