SNAKES. 113 



c. Head shielded, small; muzzle rather depressed: nostrils between 

 two shields : eyes surrounded hy small plates : tail very short : 

 anal spurs small, hidden. Charinina. 



24. Charina. 



Head short ; crown flat ; sides shelving ; muzzle blunt, rounded : 

 li-ontals 4, transverse, band-like, hinder rather larger ; vertebral verj- 

 large ; occipital very small, oblique ; two loreal, three anterior larger 

 and three posterior smaller oculars ; superciliary 3-3, small ; rostral 

 large, convex: riostrils lateral, very small, between two nasal scales, 

 the upper band-like, transverse, like a frontal, margining the rostral : 

 eyes moderate, surrounded by small scales : throat with small scales ; 

 shield small, with a distinct longitudinal gular fold : two front up- 

 per labial shields large ; rest smaller, lower : front lower labial high, 

 slender ; hinder lower : body elongate, cylindrical : scales smooth, 

 rhombic, imbricate, lower series largest: ventral shields narrow, 

 transverse : tail short, blunt at the end : subcaudal plates narrow, 

 six-sided, simple. 



Tortrix sp., Blainville I. c. Not noticed by Dmneril ^ Bihron. 



1. The Chaeina. Charina Bottae. Tortrix Bottae, i5/ami'. 

 N. Ann. Mus. 1835, t. 26, /.I. 



Body elongate, cylindrical, blunt at each end, pale yellow ; 

 back and tail darker ; one series of scales between eyes and labial 

 shields. 



a. In spirits. California. From Mr. Douglas's collection. Pre- 

 sented by the Zoological Society. 



d. Head shielded, small, cylindrical like the body ; muzzle depressed, 

 rounded : nostrils betiveen two plates : no hinder frontal bone : 

 intermaxillary teeth distinct : eyes in the middle of a j)late : tail 

 very short, cylindrical, not prehensile : anal spurs very small, 

 hidden. Tortricina. 



Anguiformes pars, Oppell, Rept. 1811. Cylindriques pars, 

 Latreille, Fam. Nat. 100. Ilysioidea pars, Fitz. N. Class. Rept. 26. 

 Tortricina pars, Muller. Tortricides pars, Dum. ^' Bib. Erp. Gen. 

 vi. 581. Imbricatae pars, Boie, Isis, xx. 510, 1827. Cylindrophes 

 pars, Fitz. Syst. Rept. 24, 1843. 



25. TORTEIX. 



Head shields 7, normal ; no internasal nor post-ocular : nos- 

 trils subvertical, in a single shield with a slit above : eves subverti- 



l3 



