REPTILES OF THE PACIFIC COAST. 155 



Wenona Isabella, BAIRD & GIRARD, Proc. Ac. Nat. Sci. Phila., 1852, 

 p. 176 (type locality Puget Sound); GIRARD, U. S. Explor. 

 Exped., 1858, p. 113, Atlas, pi. VII, figs. 8-14. 



Wenona plumbea, BAIRD & GIRARD, Proc. Ac. Nat. Sci Phila., 1852, 

 p. 176 (type locality Puget Sound); B. & G., Cat. N. A. Rep- 

 tiles, I, 1853, p. 139; GIBARD, U. S. Explor. Exped., Herp., 

 1858, p. 112, Atlas, pi. VII, figs. 1-7; BOCOURT, Miss. Sci. au 

 Hex., Kept., 8e livr., 1882, p. 512, pi. XXX, figs. 7-7c. 



Charina plumbea, COPE, Proc. Ac. Nat. Sci. Phila., 1861. p. 305; 

 TOWNSEND, Proc. U. S. Nat. Mus., X, 1887, p. 240; STEJNEGER, 

 Proc. U. S. Nat. Mus., XIII, 1890, p. 181; STEJNEGER, N. A. 

 Fauna, No. 7, 1893, p. 203. 



Charina brachyops, COPE, Proc. U. S. Nat. Mus., XI, 1888, p. 88, 

 pi. XXXVI, figs. 2a-2f (type locality Point Reyes, Cal.); 

 STEJN-EGER, Proc. U. S. Nat. Mus., XIII, 1890, p. 181; COPE, 

 Proc. U. S. Nat. Mus., XIV, 1891, p. 592; BOULENGER, Cat. 

 Snakes Brit. Mus., I, 1893, p. 131. 



Description. Top of head very slightly rounded, cov- 

 ered with plates which often differ greatly in size, shape, 

 and number in different individuals. Rostral plate very 

 large. Between it and broad frontal, two or three pair 



of plates anterior nasal, internasal, and prefrontal. 

 Labial and prefrontal plates sometimes entering orbital 

 ring. FA single loreal usually present, -but sometimes 

 two or none. Anterior upper labials usually very high, 

 but/-'like all head-plates, subject to much variation.* 

 Scales on body smooth, imbricate, about as wide as 

 long, and arranged in from thirty-nine to forty-nine 

 longitudinal rows, lowest row on each side being formed 



*For an account of the scale variation in this genus, see Stejueger, Proc. U. 8. Nat. 

 Mus., XIII, 1890, pp. 177-182. 



