24 



REPTILES. 



The Spurred Centropyx. Centropyx calcaratus, Spix^ Br. 

 t. 22,/. 2. Grmj, Ann. N. H. i. 278. Guerin, Icon. Rept. t. 4,/. 

 3. Bum. et Bib. E. G. v. 149. Schinz, R. 97, t. 36,/. 2. Weigm. 

 H. M. 9. C. intermedius, B.M. 



Olive-green, with 3 paler streaks and 2 series of black spots on 

 the back, beneath greenish white. 



a. Adult, in spirits. Female, Alabama. Presented by Thomas 



Bell, Esq. 

 h. Adult, in spirits, discoloured. 

 c. Adult, in spirits. Trop. America. Presented by Col. Sabine, 



R.E. 



b. Collar and ventral shields 4-sided, smooth, broader than long. 

 Thighs beneath shielded. Tail round, tapering. Toes 5-5. 

 Inguinal pores distinct. Collar indistinct. Emminiina. 



9. Emminia. 



Scales of back rhombic, keeled, subequal, keels forming con- 

 tinuous ridges ; of the tail whorled, of the upper part elongate, 4- 

 sided, keeled, keels forming ridges, of the lower side broad, smooth, 

 in 2 series ; of the sides of body smaller, ovate, convex, sub-imori- 

 cate ; of the sides of the neck granular; of the throat broad, shield- 

 like, in 2 longitudinal series; collar indistinct, formed of 3 shields. 

 Tongue not sheathed at the base. Head-shields 19 ; the gullet 

 shielded all over. Nostrils between 2 nasal shields, over the mid- 

 dle of the upper surface of the first labial. Toes 5-5, unequal, 

 slender, rather compressed, each with 2 rows of rather convex scales 

 beneath. Femoral pores 1 (or 2) at the base of each thigh. 



The Emminia. Emminia olivacea. 



Olive, back with a central brown streak, and a brown-edged 

 pale streak on each side; sides greyish, beneath silvery, with a few 

 minute brown dots ; gular shields 9, anterior single, with 4 pair 

 and a single one on each side between the suture of the fourth and 

 fifth pairs and the angle of the mouth. 



a. Young, in spirits. Pernambuco. Presented by Mrs. J. P. 

 George Smith. 



c. Collar and ventral shields 4-sided, smooth, as long as broad. Tail 

 compressed, 2-crested above. Toes 5-5, not keeled below. Croco- 

 dilurina. 



10. Crocodilurus, Spix. Ada, part, Gray. 



Scales of the back equal. Cheek-teeth on the inside of the 

 jaws, the hinder tricuspid ; tongue not sheathed at the base, with 

 2 depressed tips ; palate not toothed ; nostrils between 3 shields. 

 Femoral pores distinct. Toes 5-5, rather compressed, not keeled 

 beneath, the outer hinder toothed on the side. 



