190 GASTEROPODA. 



Cerithium concimium. 

 Morris's ' Cat. Brit. Foss.' 1854, ed. 2, p. 241 (Cliarlesworth, MS.). 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton ; High Olift'. 

 Middle Eocene. — Brackleskam Beds. Bracklesham Bay. 



Bittium terebrale, Lamarck, 1804. 



Cerithium terebrale. 

 Ann. Mus. 1804, vol. 3. p. 437. 

 Coq. Foss. Paris, 1833, vol. ii. pi. Ivi. tigs. 29-81, p. 401. 



Ce)-ithiumJilosum. 

 Morris's ' Cat. Brit. Foss.' 1854, ed. 3, p. 241 (Charlesworth, MS.). 



Horizon and Localities. 

 Upper Eocene. — Barton Beds. High Cliff; Barton. 



Genus LOVCNELLA, G. 0. Sars, 1878. 

 Norges Arktiske Fauna, 1878, pi. xiii. fig. 5, p. 187. 



Iiovenella sestuarina, Edwards (MS.). 



Horizon and Locality. 

 Oligocene. — Headon Beds. Headon Hill. 



Iiovenella altemata, Edwards (MS.). 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. High Cliff. 



Lovenella cancellata, J. de 0. Sowerby, 1850. 



Cerithium cancellatum. 

 Dixon's 'Sussex,' 1850, pi. ix. fig. 22, p. 182, non Lamarck. (Dixon Coll.) 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle 'Eoe.tn&.—Brackksham Beds. Bracklesham Bay. 



Iiovenella Charlesworthii, Prestwich (MS.). 



Cerithium Charlesworthii. 

 Quart. Journ. Geol. Soc. 1854, vol. x. p. 412. 



Horizon and Localities. 

 Lower Eocene. — London Clay. Whetstone; Potter's Bar; Hampstead; 

 Sheppey ; Primrose HiU ; Haverstock Hill ; Willesden ; Boreham Wood, 

 Fincnley. 



Iiovenella clavus, Lamarck, 1804. 



Cerithium clavus. 

 Ann. Mus. 1804, vol. 3. p. 346. 

 Coq. Foss. Paris, 1833, vol. ii. pi. Iviii. figs. 4-6, 14-17, p. 391. 



Lovenella clavus. 



Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. p. 47. 



Horizon and Locality. 

 Middle Eocene. — Bracklesham Beds. Huntiugbridge. 



