2S REPTILIA. 



Trapelus, Cuv. 



The form and teeth of the Agamae, but the scales are small and 

 without spines; no pores on the thighs. 



Trap. .Mgyptius; Le Changeant d'Pgypte, Geoff. Rep. d'Eg. 

 pi. V, f. 3, 4; the adult, Daud. Ill, xlv, 1, under the name of 

 Orbiculaire, is a little animal whose body is also sometimes in- 

 flated, and remarkable for changing its colours even more sud- 

 denly than the Chameleon. When young it is entirely smooth; 

 there are some larger scales scattered among the small ones on 

 the body of the adult. (1) 



Leiolepis, Cuv. 



The teeth of an Agama, the head less inflated, and completely 

 covered with very small, smooth, and compact scales. Pores on the 

 thighs.(2) The 



Tropidolepis, Cuv. 



Still similar to the Agamae in teeth and form, but regularly co- 

 vered with imbricated and carinated scales. The femoral portjs 

 are strongly marked.(3) The 



Leposoma, Spix Tropidosaurus, Boie, 

 Only differs from Tropidolepis, by having no pores.(4) 



Calotes, Cuv.(5) 

 The Calotes differ from the Agams in being regularly covered 



(1) It is difficult to establish precise limits between this subgenus and certain 

 short, thick Agamx, that have but few spines. 



(2) There is a species in Cochin China that is blue, with white stripes and 

 spots, and a long tail {Leil. guttatus, Cuv.). 



(3) Mg- undulata, Daud., a species that is found throughout America, remark- 

 able for a white cross under the throat, on a black-blue ground. The .Sg. nigrl- 

 collaris, Spix, XVI, 2, and cydurus, XVII f, f. 1, are at least closely allied to it. 



(4) Spix has not expressed himself with precision in saying that the scales of 

 his leposoma are verticillate, and this it is which has deceived M. Fitzinger. The 

 genus Tropidosaurus was made by Boie from a small species from Cochin China, 

 which is in the Cabinet du Hoi . 



(5) Pliny says that the Stellio of the Latins was called by the Greeks Gakotes, 

 Calotes, and Askalabotes, It was, as we have seen, the Geckotte of Lacep. Its appli- 

 cation by Linnaeus to his Lac. calotes is arbitrary, and was suggested to him by 

 Seba. Spix comprises our Calotes in his genus Lophthus, which is not the same 

 as tliat of Dumeril. 



