\ 
\ 
\ 
Maxillary teeth 10 
of enlarged, grooves] A L 0 G U E 
Head small, not or P 
round or vertically 
contact behind th¢ 
the nostril to the) Or 
divided ; loreal pr’ 
pits, in 19 to 31 
subcaudals in ty . 
South-easter|\| A IK EK S, 
Fam. 7. COLUBRIDZ. 
( Continued.) 
Series B. OPISTHOGLYPHA. 
Divided into three subfamilies :— 
4. Homalopsine.—Nostrils valvular, on the upper surface of the 
' snout. 
5. Dipsadomorphine. — Nostrils lateral; dentition well deve- 
loped. 
6. Elachistodontine.—Teeth rudimentary ; maxillary and man- 
dible edentulous in front. 
Most, if not all, of the Snakes in this division are poisonous to a 
slight degree, paralyzing their prey before deglutition. 
Subfam. 4. HOMALOPSINZ. 
Hydrophide, part., Bove, Isis, 1827, p. 510. 
Hydride, part., Gray, Cat. Sn. p. 35, 1849. 
Anisodontiens, part., Platyrhiniens, Duméril, Mém. Ac. Sc. xxiii. 
p- 427, 1853; Duméril § Bibron, Erp. Gén. vii. p. 796, 1854. 
Homalopsine, part., Jan, Elenco sist. Ofid. p. 74, 1863. 
Homalopside, Giinther, Rept. Brit. Ind. p. 275, 1864. 
Homalopsinz, part., Cope, Proc. Amer. Philos. Soc. xxiii. p. 484, 
1886, and Tr. Amer. Philos. Soc. xviii. p. 209, 1895. ‘ 
Homalopsin, Boulenger, Faun. Ind., Rept. p. 372, 1890. 
Nostrils valvular, on the upper surface of the snout. Dentition 
well developed. Hypapophyses developed throughout the vertebral 
column. 
Thoroughly aquatic Snakes, bringing forth their young alive in 
the water. Inhabitants of Southern China, the East Indies, 
Papuasia, and North Australia. 
VoL, III. B 
