204 GASTEROPODA. 



Family PSEUDO-MELANIID^, P. Fischer. 



Genus BAYANIA (Munier-Chalmas, MS.), P. Fischer, 1885. 

 Man. Conch. 1886, p. 698. 



Bayania fasciata, J. Sowerby, 1819. 



Mineral Oonchology, 1819, pi. 241. fig. 1. (Sowerhy Coll.) 



Horizons and Localities. 

 Oligocene. — Hempstead Beds. Hempstead. — Headon Beds. Headon Hill ; 

 Hordwell ; Milford ; Mead End ; Colwell Bay. 



Bayania hordacea, Lamarck, 1804. 



Melania hordacea. 

 Ann. Mus. 1804, vol. 4. p. 4-31. 



Coq. Foss. Paris, 1825, vol. ii. pi. xiii. figs. 14, 16, 22, 23, p. 108. 

 Ann. Soc. K. Mai. Belgique, 1888, vol. xxiii. p. 290. 



Horizon and Localities. 



Middle Eocene. — Bracklcsham Beds. Brackleshani Bay : Huntinghridge. 



Bayania inter rupta, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Hempstead Beds. Hempstead. 



Bayania linigera, Edwards (MS.). 



Horizon and Locality. 



Lower Eocene. — London Clay. Clarendon. 



Bayania obesa, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Headon Beds. Colwell Bay. 



Bayania plicatella, Edwards (MS.). 



Horizon and Locality. 

 Middle Eocene. — BracMesham Beds. BracHesham Bay. 



Bayania, n. sp. 



Horizon and Locality. 



Lower Eocene. — London Clay. Clarendon. 



