KEPTILIA. 305 



Sp. Brachylophus fasciatus Cuv., Iguana fasciata BRONGN., Essai classific. 

 Rept. p. 34, PL i, fig. 5, GUERIN Iconogr., Rept. PI. 9, fig. i ; New Guinea, 

 East Indies. This species is the only one hitherto found in the eastern 

 hemisphere which belongs to the division of the Pleurodontes. 



Iguana DAUD., Cuv., (in part), Hypsilophm WAGL. Head 

 covered with scutella and scuta in the middle part. Nostrils 

 tubular. Membrane of tympanum superficial. Palatine teeth dis- 

 tinct, in a double row on each side. Anterior maxillary teeth 

 subulate, posterior oval, compressed, with margin denticulate. 

 Throat with dewlap pendulous, compressed, denticulate. Crest in 

 middle of back and tail formed of erect acuminate scales. Row of 

 large femoral pores. Abdominal scales larger, dorsal very small. 



Sp. Iguana tuberculata LAUR., Lacerta Iguana L., SEBA Thesaur. i. Tab. 95, 

 fig. i, Tab. 97, fig. 3, HOUTTDTN Natuurl. Hist. i. 6e Stuk, PI. 52, fig. 2, 

 DAUD. Rept. in. PI. 40; Cuv. R. Ani., ed. HI., Rept. PI. 17; in South 

 America, scarcely further than to 14 S. L. ; in Brasil it is called senembi ; 

 the taste of its flesh and of its eggs is esteemed ; Iguana nudicottis Cuv., 

 Iguana delicatissima LAUR. (excl. synon.), SEBA Thesaur. Tab. 96, fig. 5, 

 GUERIN Iconogr., Rept. PI. 1 1, fig. i ; West Indies, Brasil. 



Note. Add sub-genera: Amblyrhynchus BELL, Aloponotu* DUM., 

 BIBR., and Metopoceros WAGL. In Amblyrhynchus the dewlap is 

 absent, in the others it resembles that of Iguana; these last are 

 distinguished from the Iguance by a double row of femoral pores, 

 and by flat subvertical nostrils. 



Corythophanes BOIE (and Chamceleopsis WlEGM.). Head short, 

 covered with small scutella, flat or concave above, crested above 

 the eyes, produced posteriorly into a kind of helmet. Membrane 

 of tympanum superficial. Palatine teeth distinct. Back crested. 

 Throat furnished with dewlap. Jugular fold. Femoral pores 

 none. Scales of feet, tail and abdomen keeled. Tail very long, 

 growing slender, not crested. 



Sp. Corythophanes cristatas, Agama cristata DAUD., SEBA Thesaur. i. Tab. 

 94, fig. 4 ; this species has a membranous crest in the neck, on which the 

 row of erect scales, which is continued along the back, begins ; the scales 

 of the back are small, smooth, irregular; the throat-sac is dentated be- 

 low. Corythophanes chamceleopsis DUM., BIBR., Chamceleopsis Hemandesii 

 WIEGM., Herpet. Mexic. Tab. 6. In this species the membranous crest in 

 the neck is absent and the row of erect scales begins above the back ; on 

 the back some keeled scales stand in three or four inconspicuous transverse 

 bands. Both species are from Mexico. 



VOL. ii. 20 



