464 



TlPUMBiE. 



Fig. 33, 



-prf f pif p rJ'°,sU 



Skull of Vvpera lehetina. 



Dmded into two subfamilies : — 



1. Yiperinm. — No pit on the side of th.e snout ; maxillary not 



hollowed out above. 



2. Crotalince. — A deep pit on each side of the snout, between 



the nostril and the eye ; maxillary hoUowed out above. 



Subfam. 1. VIPEBIN^. 



Viperoidea, part., Fitzinyer, Neue Classif. Sept. p. 11, 1826. 

 ViperidsB, part., Bote, Isis, 1827, p. 611. 

 Viperina, Bonaparte, Mem. Ace. Tor. (2) ii. p. 393, 1840. 

 ViperidsB, part., Gray, Zool. Miscell. p. 68, 1842, and Cat. Sn. p. 22, 



1849. 

 Vip^riens, DumSril, M4m. Ac. So. xxiii. p. 528, 1853 ; SumSril Sf 



Bihron, E)p. G4n. vii. p. 1376, 1864. 

 AtractaspididsB, Ounther, Cat. Col. Sn. p. 239, 1858. 

 Viperinse, Causinse, Atractaspidinse, Cope, Proc. Ac. Philad. 1859, 



p. 334. 

 Viperidse, CHinther, Sept. Brit. Ind. p. 395, 1864. 



