53. zaocys. 375 
Synopsis of the Species. ‘ 
. Asingle loreal; eight upper labials, fourth and fifth entering 
the eye. 
A. Scales in 16 rows. 
Two or four rows of scales keeled; sub- 
SSS ee 1. dhumnades, p. 375. 
Four or six rows of scales keeled; sub- [p. 376. 
candals 123-137 4... . cece eee eeees 2. nigromarginatus, 
B. Scales in 14 rows, all smooth ...... 3. luzonensis, p. 377. 
II. Two or three loreals ; scales in 16 or 18 rows. 
Two median rows of scales keeled; sub- 
caudals 110-118; fifth and sixth labials 
entering theeye.......-.eeeeeeeeees 4. carinatus, p. 377. 
Seales all smooth; subcaudals 163-165; 
fifth and sixth labials entering the eye.. 5. fuscus, p. 378. 
Scales all smooth ; subcaudals 123; fourth [p. 378. 
or fifth labial entering the eye ........ 6. tenasserimensis, 
1. Zaocys dhumnades. (Prare XXVI. fig. 1.) 
Coluber dhumnades, Cantor, Ann. § Mag. N. H. ix. 1842, p, 483, 
and Cat. Mal. Rept. e 74 (1847). 
Ablabes vittatus, Dum. § Bibr. vii. p. 326 (1854); Jan, Arch. Zool. 
Anat. Phys. ii. 1863, p. 281. 
Coryphodon carinatus, part., Giinth. Cat. p. 112 (1858). 
Zaocys dhumnades, Cope, Proc. Ac. Philad. 1860, p. 563; Giinth, 
Rept. Brit. Ind. p. 256, pl. xxii. tig. A (1864). 
Rostral broader than deep, visible from above ; internasals shorter 
than the prefrontals; frontals once and one fourth to once and a 
half as long as broad, as long as or a little shorter than its distance 
from the end of the snout, a little shorter than the parietals; loreal 
- longer than deep; one preocular, with a subocular below it; two 
postoculars; temporals 2+2 or 2+1; eight upper labials, fourth 
and fifth entering the eye; five lower labials in contact with the 
anterior chin-shields, which are shorter than the posterior. Scales 
in 16 rows, the two median strongly keeled; a second dorsal pair 
may be feebly keeled. Ventrals 187-194; anal divided ; subcaudals 
108-116. Anterior half of body olive above, with black edges to 
the scales and a yellow or orange, black-edged vertebral stripe ; 
upper lip and belly yellow, the olive of the upper parts extending 
down to the ends of the ventrals ; on the posterior part of the body 
the upper surfaces turn to black and the lower to dark olive or 
grey. 
Total length 1950 millim. ; tail 530. 
Southern China. 
Th ak a” = 
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