SNAKES. 



17 



a. Adult. Central America. From Mr. Gould's Collection. 



Dumeril's specimen differs in having the black colour predo- 

 minant beneath. 



12. CoNOCEPHALUS, Dum. Sf Bibr. 



Body and tail elongate ; head narrow, conical ; two posterior 

 frontals ; on£ single anterior ; two nasals ; ante-orbital none, 

 united with the loveal ; one posterior ocular. Scales keeled, 

 lanceolate, in seventeen rows ; anal entire ; subcaudals bifid. 

 Teeth equal, smooth. Central America. 



Conocephalus, Dum. ^ Bibr. vii. p. 138. Hahlea, Baird, 

 Girard Catal. p. 122. Calamaria, sp., Schleg. Ess. ii. p. 43; 

 Holbrook, N. Amer. Herpet. iii. p. 123; DeJcay, New York Fauna, 

 iii. p. 49. Coluber, sp., auct. prior. 



1. Conocephalus striatulus. 



Coluber striatulus, Linn. Syst. Nat. i. p. 275 ; Daub. Quadr. 

 Ovip. Serp. ii. p. 684 ; Lacep. Quadr. Ovip. Serp. ii. p. 285 ; 

 Latr. Kept. iv. p. 84 ; Daud. Kept. vii. p. 200 ; Merr. Tent. 

 p. 118; Harlan, Journ. Ac. Nat. Sc. Phil. 1827, p. 354, and 

 Med. Phys. Res. 1835, p. 117. Calamaria striatida, Schleg. Ess. 

 ii. p. 43 ; Holbr. N. Amer. Herpet. iii. pi. 29 ; Dekay, New York 

 Fauna, iii. p. 49. Haldea striatula, Baird, Gir. Catal. p. 122. 

 Conocephalus striatulus, Dum. ^ Bibr. vii. p. 140. 



Greyish or brownish above, whitish beneath. 



a. Adult. New Orleans. 



b. Adult : bad state. America. From M. Parzudaki's Col- 



lection. 



c. Adult : bleached. America. Old Collection. 



d. Half-grown. America. 



€. Half-grown. America. Presented by the Zoological Society. 



13. Carphophis, Dum. Sf Bibr. 



Body moderate, subcylindrical ; tail short, tapering; head 

 rather short; two pairs of frontal shields, front pair much 

 smaller ; rostral broad, well developed ; one large nasal, pierced 

 by the nostril; ante-orbital none, united with the loreal; one 

 posterior orbital. Scales smooth, rhomboidal, in thirteen rows ; 

 anal bifid ; subcaudals two-rowed. Teeth equal, smooth. North 

 America. 



