164. PHILODKIAS, 133 



■a. 2 (V. 195 ; 0. 91). Tucuman. (Type.) 



b. d (V. 204; 0. ?). Catamarca. Lord Dormer [P.]. 



o-d. d (V. 188; C. ?) Cordova. E. W. White, Esq. [C.]. 



& $ (V. 197 ; 0. 93). 



£. tJ (V. 191 ; 0. 96). Argentina. E. W. White, Eaq. [0.]. 



/. $ (V. 193; 0. 95). Uruguay. 



7. PMlodryas vitellinus. 



Bryophylax vitellinus, Cope, Proc. Amer. PMlos. Soc. xvii. 1878, 

 p. 33. 



Eostral as deep as broad, just visible from above ; internaaals 

 longer than broad; frontal long and narrow, longer than the 

 parietals ; loreal a little longer than deep ; one prseoonlar, 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 ; subcaudala 93. Yellow, 

 strongly tinged with brown above, and with orange on the labial 

 plates and lower surfaces. 



Pacasmayo, Peru. 



8. PMlodryas elegans. 



Lygophis elegans, Tschudi, Faun. Per., Herp. p. 63, pi. vi. (1845) ; 



CHrard, U.S. Explor. Exped., Herp. p. 163 (1868). 

 Dryophylax freminvillei, Dum. ^ Bibr. vii. p. 1115 (1854). 

 Dromicus rufodoraatus, part., Gunth. Cat. p. 180 (1868). 

 elegans, Jan, Elenco, p. 67 (1863), and Icon. GSn. 25, pi. i. fig. 3 



(1867). 

 Philodryaa freminvillii, Jan, II. cc. p. 83, Icon. 49, pi. iv. fig. 2 (1879). 

 Tachymenis canilatus, Cope, Proc. Ac. Philad. 1868, p. 104. 

 Lygophis pcBcilostomus, Cope, Joum. Ac. Philad. (2) viii. 1876, p. 180. 

 Dryophylax elegans. Cope, Proc. Amer. PMlos. Soc. xvii. 1878, p. 84. 

 Tachymenis elegans, Boettg. Ber. Senck. Oes. 1889, p. 312. 



Eye about half as long as the snout. Eostral much broader than 

 deep, just visible from above ; internasals as long as the prse- 

 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, aa long 

 as or slightly shorter than the parietals ; loreal longer than deep ; 

 one praeocular (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 loiigitudinal 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, 



