200 



GASTEROPODA. 



Family MELANIID^, Latreille. 



Genus MELANIA, Lamarck, 1799. 

 M6m. Soc. ffist. Nat. Paris, 1799, p. 75. 



Melania acuta, J. Sowerby, 1822. 



M^{\f ff fYit fJfi S (Ton TtiiR 



Mineral Conchology, 1822, pi 341. fig. 2. (Sowerby Coll.) 



Melania murieata. 

 Melania murieata, var. costata, 

 Forbes's 'Isle of Wight,' Mem. Geo! Surv. 1856, pi. ii. fig. 14, pi iii. fig. 16, 

 pp. 148, 151. 



Horizons and Localities. 



Oligocene. — Hempstead Beds. Hempstead. — Bemhridge Beds. Hempstead. 



— Headon Beds. Colwell Bay; Headon Hill; ilordwell; Downton 

 Common ; Beaulieu Road. 



Melania acuta, var. excavata, Morris, 1856. 



Melania murieata, var. e.vcavata. 



Forbes's 'Isle of Wight,' Mem. Geol. Surv. 1856, pi. iii. fig. 17, p. 151. 



Horizon and Locality. 



Oligocene. — Bemhridge Beds. Hempstead. 



Melania acuta, var. tumescens, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Headon Beds. Colwell Bay. 



Melania contabulata, Edwards (MS.). 



Horizon and Locality. 



Oligocene. — Hempstead Beds. Hempstead. 



Melania Heyseana, Philippi, 1846. 



Melania Heyseana. 



Palfeontographica, 1846, vol. i. part 1, pi. x. a, fig. 11, p. 69. 

 Horizf/n and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Melania Nystii (Duchastel, MS.), H. Nyst, Jun., 1836. 



Melania Nystii. 



Messager Sci. Arts, 1836, vol. iv. pi. iii. fig. 50, p. 161. 



Melania injlata. 

 Melania injlata, var. Imvis. 

 Forbes's ' Isle of Wight,' Mem. Geol. Surv. 1856, pi. ii. figs. 8, 9, p. 147. 



Melania Nystii. 

 Land- u. Siissw.-Conch. 1873, pi. xx. figs. 8, 9, p. 313. 



Horizon and Locality. 



Oligocene, — Hempstead Bed«. Hempstead. 



