53. zAocYs. 375 



Sijuopsis of the Species. 



I. A single lorcal ; ciglit ui)per lalnals, fuuith and fifth entering 

 the eye. 



A, Scales in 16 rows. 



Two or four rows of scales keeled ; sub- 



caudals lUS-llO 1. dhumnades, p. 375. 



Four or six rows of scales keeled; sub- [p. 370. 



caudals 123-137 2. ni(j)-omar<jinatus, 



U. Scales in 14- rows, all smooth 3. htzoneitsi^, p. 377. 



ir. Two or three loreals ; scales in 10 or IS rows. 



Two median rows of scales keeled ; sub- 



caudals 110-118; fifth and sixth labials 



entering the eye 4. carinatas, p. 377. 



Scales all smooth; subcaudals 103-105; 



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 0. tenasserimeimis, 



1. Zaocys dhumnades. (Platl; XXYI. fig. 1.) 



Coluber dhumnades, Cantor, Ann. ^- Mac/. ^Y. //. ix. li<42, p. 483, 



and Cat. Mai. liept. p. 74 (1847). 

 Ablabes vitlatu^, Duin. ^- Bibr. vii. p. 326 (1854); Jan, Arch. Zuol. 



Anat. Phij>s. ii. 18(53, p. 281. 

 C'orypliodou caiinatus, part., Giinth. Cat. p. 112 (1808). 

 Zaocys dlummades, Cupe, JProc. Ac. Philad. IbOO, p. 503 ; Giinth, 



Jiept. Brit. Ind. p. 250, pi. xxii. fig. A (1804). 



llostral broader than deep, visible from above ; internasals shorter 

 than the praifroutals ; 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 ; lorcal 

 longer than deep; one proeocular, 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 lu contact with the 

 anterior chin-shields, which arc shorter than the posterior. Scales 

 in 10 rows, the two median strongly keeled : a second dorsal pair 

 may be feebly keeled. Ventrals 187-104; 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 low<!r to dark olive Oi* 

 grey. 



Total length 1950 millim. ; tail 530. 



Southern China. 



