18. ISCHNOaNATHTTS. 289 



h-l S (V. 126 ; 0. 46) & Oolonia Brizuela, Haci- Dr. A. 0. BuUer 



? (V. 130 ; C. 37). enda el Rosario, Aut- [0.]. 

 Ian, Jalisco. 



m-o. cJ(V. 127, 133, 120; Hacienda StaGertmdio, Dr. A. 0. BuUer 



C. 51, 47, 48). Maacota, Jalisco. [C.]. 



5. Ischnognathus copii. 



Adelophis copei (Bugis), Cope, Proc. Am. Philos. Soc. xviii. 1879, 



p. 265 ; Dtighs, La Naturaleza, (2) i. 1887, p. 18, pi. iii. fig. 1. 

 Storeria copei, Garm. N. Am. Rept. p. 31 (1883). 



Snout rather pointed ; nasals distinct, separated from the prse- 

 ocular by the preefrontal ; no loreal ; internasals small, triangidar ; 

 frontal much longer than broad ; one prae- and two postoculars ; 

 temporals 1 + 2 ; five upper labials, third and fourth entering the 

 eye ; two pairs of chin-shields, posterior in contact with each other. 

 Scales in 15 rows, outer row smooth. Anal entire. A broad 

 brown, black-edged dorsal band with a yellow vertebral line ; flanks 

 and beUy light brown. 



Total length 330 millim. ; tail 66. 



Guadalajara, Mexico. 



6. Ischnognathus lineatus. 



Microps lineatus, Hallow. Proc. Ac. PhUad. 1856, p. 241 ; Baird, 



Rep. U.S. Explor. JR. S. x. pt. iii. pi. xxxiv. fig. 6 (1859). 

 Tropidoclonion lineatum, Co^e, Proc. Ac. PhUad. 1860, p. 76 ; H. 



Garm. Bull. Illin. Lab. iii. 1891, p. 187; Stejneger, Proc. U.S. 



Nat. Mus. xiv. 1891, p. 604. 

 Storeria lineata, Garm, N. Am. Sept. p. 32, pi. i. fig. 4 (1883). 

 Tropidoclonium lineatum iowse, Call, Am. Jbum. Sc. Sr Art, (3) xli. 



1891, p. 298. 



liostral small, a little broader than deep ; nasal semidivided j 

 loreal present, elongate, low ; internasals broader than long, shorter 

 than the prsefrontals ; frontal once and a half as long as broad, 

 longer than its distance from the end of the snout, much shorter 

 than the parietals ; one prae- and two postoculars ; temporals 1 -)- 1 

 or 1-1-2; five or six upper labials, third, or third and fourth, enter- 

 ing the eye ; posterior chin-shields very short and in contact in 

 front. Scales in 17 or 19 rows, strongly keeled, the two outer 

 rows smooth or faintly keeled. Ventrals 138-150 ; anal entire ; 

 subcaudals 32-36. Light greyish brown above, with a pale yel- 

 lowish or grey vertebral stripe ; the vertebral stripe bordered on 

 each side by a series of black dots ; a white lateral stripe along the 

 second and third rows of scales ; belly white, with two longitudinal 

 series of black spots. 



Total length 250 millim. ; tail 35. Grows to 360 millim. 



United States, east of the Rooky Mountains and west of Ohio 

 and Mississippi. 



VOL. I. u 



