CLASS REPTILIA. 



Smooth-necked Guana. Iguana Delesatissima, Laur. J 

 "^Nudicollisy Merrem. Mus. Bresl. 1. 13. f. 1. 



Sides of neck smooth ; front of dewlap slightly toothed ; 

 sides of lower jaw with small plates. Brazils and Gauda- 

 loupe. 



% Tail equally scaly ; toes unequal ; head shield, jlaU 

 ish ; dewlap entire. Brachylophus. {Les Brachylophes.) 

 Cuv. 



Banded Guana. Iguana {Bi'achylophus.) Fasciatus, 

 Brongn. Bui. Soc. Philom. t. 61. f. 1. 



Green, brown banded. South America, not Java, as said by 

 Brongniart. Mus. Brit. 



4. Tail compressed, with rings of spinous scales ; toes 

 nearly equal.; head shields conveof. Amblyrhynchus, 

 Bell. 



Rough headed Guana. Iguana (A.) Cristatus, n. BelU 

 Zool. Jour, i. t. 12. 



Brown, sides and belly yellow ? Galapagos. 



Black Guana. Iguana {A.) Ater, nob^ 

 Nearly black ; beneath dusky. Galapagos. 

 B. Ribs simple, throat with a cross fold. 



I. Head long, scuteUated ; hack crested ; tail with rings of 

 spinous scales ; back with square scales ; Jemoral pores 

 distinct. Cyclura nob. 



Palate toothed. Ctenosaura. Weigmann. 



Cycluroid Guana. Iguana. (Ctens.J Cyclurcides. n. Cteno- 

 saura Cycluroides. Wiegmann, Iris xxi. 



Dorsal crest continued ; scales of back and sides, obsoletely 



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