EEPTILTA. 299 



in each of these two groups two subdivisions may be adopted from 

 the mode of attachment of the teeth. 



Phalanx I. Agamce s. Humivagce WiEGM. {Platycornce 

 Wagl.). Body depressed. Head short, depressed, "broad poste- 

 riorly. Membrane of tympanum mostly depressed, concealed 

 more or less under spines or amongst folds of skin, rarely covered 

 entirely by skin. 



A. With teeth soldered to the margin of jcnvs. 



Agama Daud. in part, Trapelus Kaup, {Trapelus Cuv. and 

 species genus Agama Cuv., Phrynopsis, Podorrlioa, Trapelus and 

 Eremioplanis FiTZ.). Head covered by numerous small scutella, 

 often muricate with spines around the tympanum. Nostrils sub- 

 tubular, approximate at the extremity of snout. Palatine teeth none. 

 Incisor teeth subulate, canines larger, conical, oblique, molar small, 

 compressed, triangular, obtuse. Submental fold longitudinal, neck- 

 fold 'transverse. Femoral pores none, anal pores distinct. Tail of 

 different length, mostly longer than trunk, covered with imbricate 

 scales. 



Sp. Agama colonorum Daud., Larerta agamalj. (excl. synon. of Seba) Seba, 

 Thesaur. I. Tab. 93, Tab. 107, fig. 3 (not i and 2) ; this species, one of the 

 largest of the genus, has a long compressed tail, with large, keeled, pointed 

 scales ; it occurs on the coast of Guinea;— Jfirama mutahilis, Trapelus cegijpti- 

 cwsCuv., Daud. Rept. PI. 43, fig. i (under the name of Agama orbicularis), 

 Agama pallida Eeuss, Mus. Senckenb. i. Tab. 3, fig. 3 ; this species has 

 very small scales, with round tubercles scattered on the back ; common in 

 Egypt and Arabia ; the tail is shorter than in the preceding species and 

 conical. This lizard changes its colour like the chameleon. 



Amj^Mbohirus Wagl., Wiegm., Gemmatophora Kaup, Gramma- 

 toplwra DuM. (Characters and habits nearly of Agama, but there 

 are small femoral pores. Head flat, triangular; nostrils near eyes. 

 Amongst the dorsal scales, which are equal and imbricate, often 

 some few that are spinose or tuberculate are intermixed). 



Sp. Amphibolurus murkatus Wiegm,, Lacerta muricaia White, Journal of 

 a voyage to New S. Wales, PI. 31, fig. 2, p. 244, Agama Jacksoniensis Guer. 

 Jconogr., Rept. PI. 7, fig. i, from New Holland, like the rest of the species 

 of this sub-genus. 



Moloch Gray, in G. Grey's Journals of tioo Expeditions in 

 Australia, London, 1841, 8vo. 11., Appendix, pp. 440, 441, PL 2. 



