198 Mr, Gray on the Genera ofR£ptUe$, [SEPt* 



11. Amblyrhyncus, J5e//. 



Head short, truncated, above tuberculated ; body scaly ; neck 

 back and tail with a spiny crest ; toes 6-5 simple, nearly equal ; 

 femoral pores distinct ; teeth trilobate. 



A. cristatus. Bell, ZooL Journ. ii. t. 12. Mexico, 



12. POLYCHRUS, Cnv, 



Head pyramidical shielded ; body scaly, inflatile ; not crested ; 

 femoral pores distinct ; toes 5-5 simple. 

 P. marnioratus, Merrem, 



13. Anolius, Cmu. Anolis, Merrem. 



Head pyramidical ; scaly (or subscutate) ; body scaly; toes 

 5-5 very unequal, ends dilated. 



This genus may be divided into several subgenera, iaccording 

 to its scales and dorsal crests. 



1. Anolius. A. padagricus, Daiid, 2 Lacerta bul- 



laris, Lhu 3 , , A. limeatus. Daud, 4. A. Cuvieri, 



Alerrem; 2L\\\edto Basilicus? 



The fossil genus Mosasaiwus of Conybeare, according to 

 Cuvier, Oss, Fos. v. ii. 337, is intermediate between the Agamina 

 and the Iguanina, 



Fam. II. GECKOTiDiE. 



Toes nearly equal, mostly dilated, beneath transversely scaly; 

 body depressed ; throat not extensile ; ^-^eth conical or three* 

 lobed ; none in the palate. 



1. Phyllurus, Gray, Phyllures, Cuv. 



Tail depressed, lanceolate ; toes simple, filiform, clawed ; 

 body and head scaly. 



P. Whitii, nob. Lacerta platura. White's Jour, Agama. 

 Platyura, Merrem, Perhaps belong to the former family. 



2. Uroplates, Baud, 



Tail depressed, edged with a membrane ; toes semi-palmate^ 

 dilated at the ends, scales longitudinally divided, claws sunk 

 in the grove. 



*U. fimbriatus. Stellio fimbriatus, Schneid,^^ Caudiuerbera, 

 Laur, C. cristatus. Lacerta caudiverbera, Lin, ***Gecko 

 tetradatylus, Merrem, 



3. Ptyodactylus, Gray, Ptyodactyles, Cuv. 



Tail round; toes free, ddated at the end, scales longitudi- 

 nally divided, claws sunk in on the grove ; femoral pores none. 

 P. lobatus. L. gecko, //asse/^ 



4. Thecadactylus. Thecadactyles, Cuv. 



Tail round, scaly ; toes dilated their whole length, furnished 

 oeneath with scales divided by a longitudinal fullow, containing 

 the claws ; thumb clawless ; thigh poreless. America, 



T. Isevis. Greco levis, Daud, Lac. rapicauda, Gmelin, 



