370 Zoological Society . — 



There is a specimen in the British Museum sent by Mr. Brandt 

 under the name of A. Darwinii. 



2. Amphisb^ena AMERICANA, Schreb. ; Gray, Cat. Tort., &c., 

 B. M. 70. 



Body rather thick, black, varied ; two or more pairs of plates 

 behind the frontal plates. 



Amphisbcena fuliginosa, Linn. 



A. vulgaris, Laur. 



Hab. Tropical America: British Guiana; Berbice; Demerara 

 (B. M.). 



The labial shields vary in number and shape ; the shield* behind 

 the frontal vary in number and size, but they are generally in pairs 

 and subsymmetrical. 



Gervais figures the skull of the species (Ann. Sci. Nat. 1854, xx. 

 t. 14. f. 4). 



** Head rounded, narrow ; preanal pores and preanal shields ten 

 or twelve. 



3. Amphisb^na Petr^i, Dum. et Bib. Erp. Ge'n. v. 487 ; Gray, 

 /. c. 80. 



Hab. Brazils (Mus. Paris). 



*** Head rounded, narrow, leather produced in front ; crown-shields 

 large J occipital shields polygonal. Body slender, one-coloured ; 

 preanal pores two or four ; preanal plates six, middle ones 

 elongate. 



4. Amphisb^na vermicularis, Dum. et Bibr. Erp. Ge'n.v.489; 

 Gray, I. c. 71. 



Hab. Brazil (Dr. Gardner, B. M. ; Mus. Paris) ; Porto Bello 

 (^Capt. Austin, B.N., B. M. : head in a very bad state). 



5. Amphisb^na ? Darwinii, Dum. et Bib. Erp. Gen. v. 491 ; 

 Gray, I. c. 71. 



Hab. Monte Video (Mr. Darwin; Mus. Paris). 



6. Amphisb^na ?violacea, Peters, Berlin Monatsb. 1854, 

 p. 620; Wiegmann, Arch. 1855, p. 49. 



Hab. East Africa, Inhambane (Peters). 



This species is unknown to me ; it is without a single frontal 

 shield, and has four preanal pores and visible eyes. 



Cynisca, Gray, Cat. Tort., &c., B. M. 71, 1844. 



Head flat, narrow ; nose conical, four-sided, rounded at the end ; 

 rostral triangular ; nasal plates very large, soldered together, cover- 

 ing the front of the head ; crown with a small frontal and a pair of 

 parietal shields ; eyes distinct ; temples and occiput with large shields. 

 Body very slender ; lateral line distinct. Tail cylindrical, elongate, 

 truncated ; preanal pores numerous. 



