CLASS REPTILIA. 



sides of the head, convex ; scales of the mastoid ridge, small, 

 conical. Palatine teeth in two bunches ; tail, base smooth, 

 middle and end with distant rings of slightly elevated scales, 

 having four rings of small scales between each ; toes short, 

 thick. Mus. Bell. Length of body eighteen inches. 



Iguana Cyclura of Cuvier may be probably one of these 

 species, but his account of it is too general to distinguish it. 



Palate toothless. Cyclura. Harlan. 



. Keeled Guana. Iguana (Cyclura) Carinata. Cyclura 

 Carinata. Harlan. Acad. Nat. Sci. Phil. iv. t. 15. 



Deep dirty brown ; dorsal crest interrupted over the shoul- 

 ders and loins ; scales of body uniform ; legs and feet 

 minutely square. Tail above keeled, with three rings of de- 

 pressed scales between each ring of spiny scales. Inhab. 

 Turk's Islands, Bahama. 



Round Guana. -Iguana (Cyclura) Teres y n. Cyclura 



Teres. Harlan. 1. c. t. J 6. 

 Dark green, teeth small, uniform pointed ; dorsal crest in- 

 terrupted over the loins ; scales of the sides square, of the 

 thighs and legs bristly. Tail cylindrical, with tv/o rings of 

 depressed scales between each rings of spines. Tampico. 



Clouded Guana. Iguana (Cyclura) Nuhila. Gray. 



Blue with oblique bands of roundish spots ; tail compressed, 

 with four rows of small depressed scales between each ring 

 of spines. South America ? Brit. Mus. Figured here under 

 the name of Clouded Lizard. L. Nehulosa. 



II. Head covered with convex scales, and often some ^aper- 

 ciliary plates ; hack, covered with small scales slightly 

 crested, femoral pores none, Ophyessa, Boie. 



1. Tail, simple, compressed, dorsal scales, minute, (Xiphura, 



nob.) 



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