a ————— - - ls i 
' 
18, IscHNOGNATHUS. 289 
- Rig (V,128; 0.46) & Colonia Brizwsla, Haci- De, A. C. Balle 
2 (V. 130; C. 37). enda el Rosario, Aut- _—‘[C.]. 
lan, Jalisco. 
m-o. $(V. 127, 183, 120; Hacienda StaGertrudio, Dr, A. ©. Buller 
©. 51, 47, 48). ” . “Mascota, Jalisco. (C.}. 
5. Ischnognathus copii. 
Adelophis copei (Duges), Cope, Proc. Am. Philos. Soc. xviii. 1879. 
p. Bs; Depas La Naturaleza, (2) i. 1887, p. 18, pl. iii. fig. 1.” 
Storeria copei, Garm. N. Am. Rept. p. 31 (1883). 
Snout rather pointed; nasals distinct, separated from the pre- 
ocular by the prefrontal; no loreal ; internasals small, triangular ; 
frontal much longer than broad; one pre-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 belly light brown. 
Total length 330 millim. ; tail 66. 
Guadalajara, Mexico. 
6. Ischnognathus lineatus. 
Microps lineatus, Hallow. Proc. Ac. Philad. 1856, p. 241; Baird, 
. U.S. Explor. R. R. x. pt. iii. pl. xxxiv. fig. 6 (1859). 
Tropidoclonion lineatum, Cope, Proc. Ac, Philad. 1860, p. 76; H. 
<" . Bull. Illin. Lab, iii. 1891, p. 187; Stejneger, . US, 
Nat. Mus. xiv. 1891, p. 504. : 
Storeria lineata, Garm. N. Am. Rept. p. 32, pl. i. fig. 4 (1883). 
is Oy lineatum iowz, Call, Am. Journ. Sc. § Art, (3) xli. 
» p. 298. 
Rostral small, a little broader than deep; nasal semidivided ; i3 
loreal present, elongate, low ; internasals broader than long, shorter x 
than the prefrontals; 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 pre- and two postoculars ; temporals 1+1 
or 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 366 millim. 
United States, east of the Rocky Mountains and west of Ohio 
and Mississippi. 
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