118 COLUBRID. 
distinct from neck ; eye moderate, with vertically elliptic or sub- 
elliptic pupil ; nasal shield single or semidivided. Body cylindrical ; 
scales smooth, with apical pits, in 17 or 19 rows; ventrals rounded. 
Tail moderate ; subcaudals.in two rows. 
Bolivia, Pera, Chili. 
1. Tachymenis peruviana. 
Tachymenis peruviana, Wiegm, N. Act. Ac. Leop.-Carol. xvii. i. 1835, 
Seed pl. xx. fig. 1; Peters, Mon. Berl. Ac. 1863, p. 275; Steind.. 
0 
vara, Pee p. 62 (1867), : r 
Coronella ensis, pea gf 4 . Serp. ii. p. 70 (1837) ; Guichen. in 
Gay, Hist. Chile, Rep pl. iv. fig. y (1854). 
Ophis peruana, Tachuae aun. Per., Herp. p. 58 (1845). 
Dipsas chilensis, Dum. § Bibdr. vii. P. 1159 (1854). . 
Tachymenis chilensis, Girard, Proc. Ac. Philad. 1854, p. 226, and 
Gilliss’ U.S. Nav, Astron. Exped. ii. p. 213, pl. XXXVii. figs. 1-6 
(1856), and U.S, Explor, Exped., j aly 173 508 1858) Giinth. Cat. 
34 (1858); Cope, Proc, Ac. Philad. ‘7860, p. 
Mssotes chilensis, Jan, Arch. Zool. Anat. Pash ii. 1668, p. 308, and 
Icon. Gén. 18, pl. vi. fig. 2 (1866). 
Psammophylax assimilis, Jan, ll. cc. p. 8311, Icon. 19, pl. i. fig. 2. 
Rostral broader than deep, scarcely visible from above ; inter- 
nasals as long.as or shorter than the prefrontals ; frontal once and. 
a half to twice as long as broad, a little longer than its distance from. 
the end of the snout, as long as or a little shorter than the parietals ;. 
loreal as long as deep ; one or two pre- and two postoculars ; tem- 
porals 142 or 243; seven or eight upper labials, third and fourth 
or fourth and fifth entering the eye; four or five lower labials in 
contact with the anterior chin-shields, which are as long as or longer 
than the posterior. Scales in 19 rows. Ventrals 135-158; anab 
divided ; subcaudals 33-53. Yellowish or pale brown above, with 
darker spots or more or less distinct longitudinal streaks; an oblique 
dark streak from the eye to the angle of the mouth; yellowish or 
grey beneath, usually with small blackish spots often forming longi- 
tudinal series. 
Total length 530 millim. ; tai 90. 
Bolivia, Peru, Chili. 
a..d (V. 144; OC. 53), Aschiquiri, Bolivia. — 
b. 2 ty 142; C, 44), Larecaja, Bolivia. . 
c. od (V. 185; CO. 51). Lake Titicaca. J. B. Pentland, Esq. 
d. 9 (V. 151; ©. 30) Colchagua, Chili. bi 
4 Jd ( Br & i) ye. paseo. Dr. ‘Corin TP. igs 
“J. uimbo Dr. Coppinger 
Tee tas ath 
( , 48). alcahuana, Dr. Coppinger 
rig V. 158; ©. 46) ‘8. Chili. r. ieee ih 13 
& 2 (V. 147; "CO, 45). H. B. Fane ea 
Re [P.]. 
m-n. 2 w . 148,151; ©. Chili. 
V. 158; 0.46). Chili. 
