194 REPTILES. 



The Edged Toe. Thysanodactylus hilineatus, Ophyessa 

 bilineata, Graj/, ZooL Beechey''s Voy. Rept. 94. 



Olive, black spotted, with a narrow pale streak on each side of 

 the back; chest and beneath pale whitish; temple with some nar- 

 row black streaks. 



a. Half gi'own, in spirits, Fernando de Xoronha. From H.M.S. 



Chanticleer. 

 h. In spirits. South America. 



** Back crested. Head sJwrt, compressed and produced behind. 



Toes not fringed. 



18. CoRYTHOPHAiNES, Boic. ' 



Head short, covered with small scales. Forehead rhombic, 

 the hinder part elevated into a kind of crest. Nape and back 

 with a distinct uninterrupted crest. Palate toothed. Ear not 

 armed above. Throat with a transverse fold, and with a small 

 denticulated throat-pouch. Scales equal. Toes slender, simple, 

 (not fringed nor dilated). Tail long, rounded, not crested. Fe- 

 moral pores none. Thighs without any fold beneath. 



The CoRYTHOPHANE. Corythophancs cristata, (Boie), Grai/, 

 Griffith^ A. K. ix. 55. Gravenh. Acad. N. Cur. xvi. 938, t. 65,/. 

 6, 10. Dum. et Bih. E. G. iv. 174. A gama cristata, Merrem^ 

 Tent. 50. Seha^ i. 147, t. 94,/. 4. La Sourcilleux, Bomiat, Enc. 

 Meth. t. 4, /. 1. Iguana pileata, Gravenh. Nov. Act. Lisp. xvi. 

 t. (young). 



Scales small, irregular, close-pressed, smooth, those near the 

 dorsal crest keeled, of the chest and belly slender, 4-sided, larger 

 keeled, in oblique cross bands, of limbs and tail very large, rhom- 

 bic, keeled, of tail rhombic. 



Inhab. Mexico. Mus. Berlin, Klenkenbergii. 



19. Cham.i:leopsis, Weigm. Corythophanes, part, Dum. et Bih. 



Head covered with small scales, the hinder part elevated into 

 a kind of crest. Nape not crested. Back crested. Palate 

 toothed. Ears with 2 spines above. Throat with a cross fold, 

 and with a very small simple pouch. Scales unequal, smooth, 

 with cross bands of keeled scales. Toes slender, simple. Tail 

 long, rounded, not crested. Femoral pores none. Thighs with 

 a longitudinal plait beneath. Claws of the front feet very long. 



The QuALTAPALCALT. Cliamaelcopsis Hernandesii, Gray., 

 Griffith., A. K. ix. 45. Beechey., Voy. t. f. (jun.) Gravenh. 

 Acad. N. Cur. xvi. 944, t. 65, / 1 — 5. Weigm. Herp. Mex. 15, 

 37, 39, t. 6. Chamagleo Mexicanus, Wagler, Isis, 1832, 296. 

 Corvthrophanes chamoeleopsis, Weigm. H. Mex. Dum. et Bih. 

 E. G. iv. 176. 



