50 ‘COLUBRID. 
Dipsas fallax, Nordm. in Demid, Voy. Russ. Mér. iii. p. 848, Rept. 
l. iv. fig. 2 (1840); Berth. in Wagn. Reise n. Kolehis, p. 334 
1850). 
Tarbophis vivax, Jan, Icon. Gén. 38, pt i. fig. 2 (1871); Boettg. in 
Rade, Faun. Flor. Jig riage e 72 (1886). 
—— vivax, part., Strauch, Schl. Russ. R. p. 194 (1878). 
Agrees in most respects with 7’. fallax, but parietals shorter, 
slightly longer than the frontal, and anal entire. Nasal semi- 
divided ; fourth and fifth, or third, fourth, and fifth labials entering 
the eye. Scales in 19 rows (exceptionally 21). Ventrals 203-2365 ; 
subcaudals 55-70. Grey above, with 35 blackish spots on the body, 
the anterior largest and darkest; a lateral series of smaller spots or 
vertical bars; lower parts blackish, with small whitish spots and 
dots. 
Total length 650 millim. ; tail 100. 
Caucasus. 
a. 3 (8ce.19; V.218; Evlakh, Gov. Elizabethpol, 
C. 61). Transcaucasia, 
4. Tarbophis rhinopoma. 
? Tarbophis sp., Cope, Proc. Ac. Philad. 1862, p. 338. 
Dipsas rhinopoma, Blanf. Ann. § Mag. N. H. (4) xiv. 1874, _ 34, 
and Zool. E. Pers. p. 424, pl. xxviii. fig. 2 (1876) ; Boettg. in Radde, 
Faun. Flor. Casp.-Geb. p. 72 (1886). 
siege “Ip rhinopoma, Bouleng. Journ. Bomb. N. H. Soc. ix, 1895, 
p- 325. 
Rostral broader than deep, just visible from above ; internasals 
broader than long, shorter than the preefrontals; frontal slightly 
longer than broad, as long as its distance from the end of the snout, 
a little shorter than the parietals ; nasal semidivided; loreal twice 
to twice and a half as long as deep, entering the eye below the 
preocular, which is in contact with the frontal ; two postoculars ; 
temporals small, scale-like, 2 or 34-3 or 4; eight to ten upper 
labials, third, fourth, and fifth, or fourth and fifth, or fourth, fifth, 
and sixth entering the eye; four or five lower labials in contact with 
the anterior chin-shields; posterior chin-shields very small and 
widely separated from each other by scales. Scales in 23 (or 24) 
rows. Ventrals 268-280; anal entire; subcaudals 76-82. Pale 
sandy grey above, with a dorsal series of 65 to 85 brown square or 
transverse spots, larger than the interspaces between them, and an 
alternating series of smaller spots on each side; on the posterior 
part of the body the dorsal spots may split up into two alternating 
series ; head with small dark spots or specks; labials dark-edged ; 
throat white; ventrals dark brown. 
Total length 990 millim.; tail 155. 
Persia, Sind. 
od (V. 268; 0.77). Karman, 8, Persia, W.T. Blanford, Esq. [E.]. 
5000 ft. (One of the types. 
b. Yg. (V. 280; 0,82), Sind. H, M. Phipson, Bis [P.]. 
