278 COLUBRID. 
Synopsis of the Species. 
I. Scales in 15 rows. 
A. Scales feebly keeled ............ 1. semicarinatus, p. 278. 
B. Scales smooth. 
1. Seven or eight upper labials. 
a. Loreal present ; nasal divided or semidivided. 
Rostral as deep as broad or a little 
broader than deep; anal divided .... 2. major, p. 279. 
Rostral as deep as broad; anal entire .. 3. dori, p. 279. 
Rostra] much broader than deep ...... 4, frenatus, p. 280. 
f. Loreal present; nasal single . 5. stoliczke, p. 281. 
y. No loreal; nasal single. 
Snout twice as long as the eye ....... 6. tricolor, p. 281. 
Snout not twice as long as the eye .... 7. calamaria, p. 282. 
2, Six upper labials ; nasal divided; loreal present. 
8. rappit, p. 282. 
II. Scales in 13 rows. 
A. Tail not more than one third of the total length. 
Seven upper labials, third and fourth 
Betcring the! Oye. 7s \).c' rate See cl 9. baliodirus, p. 283. 
Eight upper labials, fourth and fifth 
BUteTINS The CYC. as v5 ietale ete 10. scriptus, p. 284. 
B. Tail more than one third of the total length; subeaudals 77— 
ROB RG ie wie dese s > eae ll. longicauda, p. 284. 
Bites Sealésan LiTows! 3.05 onesies 12. nicobariensis, p. 285. 
1. Ablabes semicarinatus. 
Eurypholis semicarinatus, Hallow. Proc, Ac. Philad. 1860, p. 493. 
Cyclophis nebulosus, Giinth. Ann. § Mag. N. H. (4) i. 1868, 
p. 418, pl. xix. fig. C. 
Ablabes semicarinatus, Bouleng. Proc. Zool. Soc. 1887, p. 148. . 
Rostral a little broader than deep, just visible from above; nasal 
divided ; eye a little more than half the length of the snout ; suture 
between the internasals much shorter than that between the pra- 
frontals ; frontal as long as or a little longer than its distance from 
the end of the snout, shorter than the parietals; loreal about twice 
as long as deep; one pre- and two postoculars ; temporals 1+2; 
eight upper labials, fourth and fifth entering the eye ; four lower 
