ELAPINE. 311 
a. Habit colubriform or elapiform. 
* Tnternasals distinct ; rostral moderate 
t Scales not oblique, smooth. 
t Ventrals rounded, 
Eye moderate or rather small; canthus rostralis distinct; sub- 
caudals all or part in two rows 218. Pseudechis, p. 327 
Eye moderate or small; canthus rostralis feebly marked or absent 
subcaudals single( with one exception). 219. Denisonia, p. 332. 
Eye very small; subcaudals in tworows. 220. Micropechis, p. 346. 
Ventrals angulate and notched laterally ; sub- 
caudals single... 221. Hoplocephalus, 
[p. 348. 
tr Scales not oblique, strongly keeled; subcaudals 
222. Tropidechis, p. 350. 
PINRO -.65..34 6 wee 
TTt Scales oblique, smooth, laterals shorter than 
dorsals ; subcaudals single. 
. 223. Notechis, p. 351. 
** Tnternasals absent; rostral very large ; subcaudals 
224, Rhinhoplocephalus, 
[p. 352, 
single 
8. Habit viperiform. 
Scales smooth; subcaudals single’ .. 225. Brachyaspis, p. 353. 
Scales more or less distinctly keeled ; posterior subcaudals paired ; 
end of tail compressed, terminating in a long spine. 
226. Acanthophis, p. 354. 
6. Head not distinct from neck; subcaudals in two rows 
Scales not oblique ; tail moderate ; nasal divided. 
228. Boulengerina, p. 357. 
Scales oblique ; tail very short; nasal divided. 
_ 229, Elapechis, p. 358. 
Scales not oblique ; tail very short ; nasal entire 
230. Rhynchelaps, p. 361 
; nasal entire ; 
4. No maxillary teeth beyond the poison-fangs 
subcaudals single 227. Elapognathus, p. 356. 
B. Maxillary bone not extending forwards beyond the palatine ; 
vertebral scales enlarged . 281. Bungarus, p. 365. 
C. Maxillary bone extending forwards beyond the palatine 
vertebral scales not enlarged. 
1. Internasal bordering the nostril. 
a. Poison-fangs followed by one or more small teeth ; 
BOGUS. Ge aa't ewe k's 232. Naia, p. 372. 
scales 
