CATALOGUE 



OB 



SNAKES. 



Fam. 7. COLTJBRID^, 



(Continued.) 



Series B. OPISTHOGLYPHA. 



r 



Divided into three subfamilies : — 



4. Homalopsince. — Nostrils valvular, on the upper surface of the 



snout. 



5. Bipsadomorphinoe. — Nostrils lateral ; dentition well deve- 



_ loped. /'F ■'• * .' 



6. Elaehistodontime. — 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. HOMALOPSIN^. 



HydrophidsB, part., Boie, Ids, 1827, p. 510. 

 HydridEe, part., Gray, Cat. Sn. p. 36, 1849. 

 Anisodontiens, part., Platyrhiniens, DumSril, M4m. Ac. 8c. xiiii. 



p. 427, 1853 ; DumSril §■ JBibron, Erp. G6n. vii. p. 796, 1854. 

 Homalopsinse, part., Jan, Elenco sist. Ofld. p. 74, 1863. 

 Homalopsidse, Criinther, Sept. Srit. Ind. p. 275, 1864. 

 HomalopsinsB, part.. Cope, Proc. Amer. PMlos. Soe. xxiii. p. 484, 



1886, and Tr. Amer. PMlos. Soc. xviii. p. 209, 1895. 

 Homalopsinse, Boulenger, Faun. Ind., Mept. 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. in. B 



