130 COLUBRIDJE. 



3. Liophis taeniurus. 



Liophis tseniurus, Tschudi, Faun. Per., Herp. p. 51, pi. v. 



Jan, Arch. Zool. An. Phys. ii. 1803, p. 290, and Icon. Gin. 18, pi. iii. 



fig. 1 (1866). 

 Aporophis teniurue, Cope, Proc. Amer. Philos. Soc. xviii. 1879, p. 277. 



Eye moderate. Eostral broader than deep, scarcely visible from 

 above ; internasals as long as broad, as long as the prscfrontals ; 

 frontal once and a half or once and two thirds as long as broad, a 

 little longer than its distance from the end of the snout, a little 

 shorter than the parietals ; loreal deeper than long ; one pne- and 

 two postoculars ; temporals 1 + 2; eight upper labials, fourth and 

 fifth entering the eye; five lower labials in contact with the anterior 

 chin-shields, which are as long as the posterior. Scales in 17 

 or 19 rows. Ventrals 148-185; anal divided; subcaudals 53-57. 

 Length of tail 4| to 5 times in the total length. Brown above, 

 anteriorly with black transverse spots or cross-bands, posteriorly 

 with two or four black longitudinal bands ; labials whitish, a black 

 lateral streak passing through the eye ; a black ^-shaped nuchal 

 collar ; belly white with black spots, some of which extend over a 

 whole ventral shield ; lower surface of tail black, with or without a 

 light streak along each side. 



Total length 630 millim. ; tail 125. 



Peru and Ecuador. 



a. ? (Sc. 17 ; V. 164 ; C. 53). Mufia, Peru. Mr. W. Davis [C.] ; 



Messrs.Veitch [P.]. 



b. rf (Sc. 17 ; V. 148 ; C. 67). Moyobamba, Peru. Mr. A. H. Roff [C.J. 



c. $ (Sc. 19 ; V. 157 ; C. 55). Guayaquil. H. B. James, Esq. 



[P.]. 



4. Liophis albiventris. 



Liophis reginse, vars. albiventris et quadrilineata, Jan, Arch. Zool. 

 Anat. Phys. ii. 1863, p. 294, and Icon. Gen. 16, pi. vi. figs. 2 & 3 

 (1866) ; jBocourt, Miss. Sc. Mex., Rept. p. 633, pi. xli. fig. 4 (1886). 



Opheomorphus alticolus, Cope, Proc. Ac. Philad. 1868, p. 102. 



Liophis alticolus, Bouleny. Ann. 8f Mag. N. H. (5) ix. 1882, p. 460. 



Eye moderate ; snout short. Rostral nearly twice as broad as 

 deep, just visible from above ; internasals broader than long, shorter 

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

 long as or slightly longer than its distance from the end of the 

 snout, shorter than the parietals ; loreal deeper tban long, some- 

 times very small or absent ; one pra> and one or two postoculars ; 

 temporals 1+2; eight upper labials, fourth and fifth entering the 

 eye ; four or five lower labials in contact with the anterior chin- 

 shields, which are as long as the posterior. Scales in 17 rows. 

 Ventrals 138-158; anal divided; subcaudals 50-66. Length of 

 tail 4 to 5 times in the total length. Olive or greenish above, 

 uniform or spotted with black ; a dark streak on each side of the 

 head, passing through the eye ; labials white ; young with a pale 

 black-edged nuchal collar; a more or less distinct black streak, 



