164, PHILODRYAS. 133 
a. 9 (V. 195; C. 91). Tucuman. (Type.) 
b. gd (V. 204; C. P). Catamarca. Lord Dormer [P.]. 
c-d. 3 (V. 188; C.?) Cordova. E. W. White, Esq. [C.]. 
& 2 (V. 197; C. 93) 
é. 3 (V. 191; C. 96). Argentina, E. W. White, Esq. [C. }. 
SF. 2 (V. 193; C. 95). Uruguay. 
7. Philodryas vitellinus. 
Dryophylax vitellinus, Cope, Proc. Amer. Philos. Soc. xvii. 1878, 
p. 33. 
Rostral as deep as broad, just visible from above; internasals 
longer than broad; frontal long and narrow, longer than the 
parietals ; loreal a little longer than deep; one preocular, nearly 
reaching the frontal; two postoculars; temporals 1+1; eight 
upper labials, fourth and fifth entering the eye; five lower labials 
in contact with the anterior chin-shields, which are a little shorter 
than the posterior. Scales smooth, with single apical pits, in 19 
rows. Ventrals 202; anal divided; subcaudals 93. Yellow, 
strongly tinged with brown above, and with orange on the labial 
plates and lower surfaces. ) 
Pacasmayo, Peru. 
8. Philodryas elegans. 
Lygophis elegans, Tschudi, Faun. Per., Herp. p. 53, pl. vi. (1845) ; 
Girard, U.S. Explor. Exped., Herp. p. 163 (1858). 
Dryophylax freminvillei, Dum. § Bibr. vii. p. 1115 (1854). 
Dromicus rufodorsatus, part., Giinth. Cat. p. 130 (1858). 
elegans, Jan, Elenco, p. 67 (1863), and Icon. Gén. 25, pl. i. fig. 2 
(1867). 
Philodryas freminvillii, Jan, J. ce. p. 83, Icon. 49, pl. iv. fig. 2 (1879). 
Tachymenis canilatus, Cope, Proc. Ac. Philad. 1868, p. 104. 
Lygophis peecilostomus, Cope, Journ. Ac. Philad. (2) viii. 1876, p. 180. 
Dryophylax elegans, Cope, Proc. Amer. Philos. Soc. xvii. 1878, p. 34. 
Tachymenis elegans, Boettg. Ber. Senck. Ges. 1889, p. 312. 
Eye about half as long as the snout. Rostral much broader than 
deep, just visible from above; internasals as long as the pre- 
frontals ; frontal twice to twice and a half as long as broad, as long as 
or a little longer than its distance from the end of the snout, as long 
as or slightly shorter than the parietals ; loreal longer than deep; 
one preocular (sometimes divided), extending to the upper surface 
of the head but not reaching the frontal; two (exceptionally three) 
postoculars; temporals 1+1, 1+2, or 2+2; eight upper labials, 
fourth and fifth entering the eye; five lower labials in contact 
with the anterior chin-shields, which are a little shorter than the 
posterior. Scales smooth, with single apical pits, in 19 rows. 
Ventrals rounded, 184-215; anal divided; subcaudals 97-125. 
Yellowish, greyish, or pale brown above, with darker, black-edged 
spots disposed in paired or single longitudinal series on the back ; 
these spots may be accompanied or replaced by a dark vertebral 
stripe; a dark streak on each side of the head, passing through the 
eye, sometimes continued along the body; upper lip yellowish, 
