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. 8f Bibr. 



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

 frontals ; one single anterior ; two nasals ; ante-orbital none, 

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

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

 Teeth equal, smooth. Central America. 



Conocephalus, Dum. S,- Bibr. vii. p. 13S. Haldea, Baird, 

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

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

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



1. Conocephalus striatulus. 



Coluber striatulus, Linn. Syst. Nat. i. p. 2/5 ; Daub. Quadr. 

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

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

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

 Med. Phys. Res. 1835, p. 1 17. Calamaria striatula, 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. 4" 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. 



e. 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. 



