130 



20. CHARINA. 



Charina, Gray, Cat. Sn. p. 113 (1819) ; Cope, Proc. Ac. Philad. 1861, 

 p. 305; Bvcourt, Miss. Sc. Me.v., Rept. p. oil (1882); Cope, Am. 

 Nat. 1886, p. 293; Stejneyer, Proc. U.S. Nat. Mus. xiii. 1890, 

 p. 177 ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 592. 



Weuona, Baird 8f Gir. Proc. Ac. Philad. 1852, p. 176, and Cat. N. 

 Am. Rept. p. 139 (1853) ; Jan, Icon. Gen. Ophid. p. 68 (1865) ; 

 Bocourt, I. c. p. 512. 



Pseudoeryx, Jan, Arch.f. Nat. 1862, p. 242, and Icon. Gen. p. 66. 



Anterior maxillary and mandibular teeth longest, gradually de- 

 creasing in size. Head not distinct from neck, covered with shields ; 

 rostral large ; nostril between two nasals. Eye very small, with 

 vertical pupil. Body cylindrical ; scales small, smooth. Tail short, 

 thick, not prehensile, rounded at the end ; subcaudals single. 



Western North America. 



1. Charina hottse. 



Tortrix bottse, Blainv. Nouv. Ann. Mus. iv. 1835, p. 289, pi. xxvi. 



fig. 1. 

 Charina bottfe, Gray, Cat. p. 113 (1849) ; Bocourt, Miss. Sc. Mex., 



Rept. p. 511 (1882) ; Garm. N. Am. Rept. p. 7 (1883) ; Stejneger, 



Proc. U.S. Nat. Mus. xiii. 1890, p. 181 ; Cope, Proc. U.S. Nat. 



Mus. xiv. 1892, p. 592. 

 Wenona plumbea, Baird Sf- Gir. Proc. Ac. Philad. 1852, p. 176, and 



Cat. N. Am. Rept. p. 139 (1853) ; Girard, U.S. Explor. Exped., 



Ilerp. p. 112, pi. vii. figs. 1-7 (1858); Jan, Icon. Gen. p. 69, 1. 3, 



pi. ii. fig. 2 (1864) ; Bocourt, I. c. p. 512, pi. xxx. fig. 7. 

 Isabella, Baird ^- Gir. II. cc. pp. 176, 140 ; Girard, I. c. p. 113, 



pi. vii. figs. 8^14. 

 Pseudoeryx bottai, Jan, Arch. f. Nat. 1862, p. 246, and Icon. Gen. 



p. 67, 1. 3, pi. ii. fig. 1. 

 Charina plumbea, Cope, Proc. Ac. Philad. 1861, p. 305, and 1883, 



p. 21 ; Stejneger, I. c. 



Snout rounded and prominent. Eostral large, as deep as broad 

 or a little broader than deep, the portion visible from above at least 

 two thirds its distance from the frontal; two or three pairs of 

 shields between the rostral and the frontal ; a small azygous prae- 

 frontal sometimes present ; nostril between two nasals, the anterior 

 of which is usually fused with the internasal ; frontal as broad as 

 deep or broader than deep, followed by a short, single or divided 

 parietal; loreal present or fused with the pra^frontals ; one or two 

 pra30culars, the upper in contact with the frontal and not much 

 smaller than the supraocular ; two or three postoculars ; eye in 

 contact with one, two, or three labials, or separated from the labials 

 by a series of suboculars : eight to eleven upper labials. Scales in 

 39 to 49 rows. Ventrals 192-211 ; anal entire ; subcaudals 20-37. 

 Yellowish, brown, or dark grey above, without any spots or mark- 

 ings ; yellow beneath. 



Total length 550 millim. ; tail 50. 



