250 GASTEROPODA. 



Hartmannia minuta, Edwards (MS.). 



Horizon and Localities. 



Oligocene. — Bembridge Beds, Sconce ; Headon Hill. 



Hartmannia rotundata, Edwards (MS.). 

 Horizon and Locality. 



Oligocene. — Bembridge Beds. Headon Hill. 



Genus DISSOSTOMA, Cossmann, 1888. 

 Ann. Soc. E. Mai. Belgique, 1888, vol. xxiii. p. 202. 



Dissostoma mumia, Lamarck, 1804 and 1806. 

 Cyclostoma mumia. 

 Ann. Mus. 1804, vol. 4. p. 115 ; 1806, vol. 8. pi. x. fig. 1. 

 Coq. Fosa. Paris, 1824, vol. ii. pi. vii. figs. 1-3, p. 76. 

 Forbes's ' Isle of Wight,' Mem. Geol. Surv. 1850, p. 68. 

 Desc. Anim. sans Vert. 1863, vol. ii, p. 882. 

 Megalomostoma mumia. 



Land- u. Siissw.-Concli. 1873, p. 298. 



Cyclostoma P mumia. 



Mon. Pal. Soc. 1877, pi. xxxiv. figs. 2''-2<', p. 332. 

 Dissostoma mumia. 



Ann. Soc. R. Mai. Belgique, 1888, vol. xxiii. p. 202. 

 Horizon and Locality. 



Oligocene. — Bembridge Beds, Bembridge. 



Genus CALLIANELLA, E. B. Newton, 1891, nrnn. mut. 



Callia, J. E. Gray, 1841. 



Annals, 1841, vol. vi. p. 77, non ServiUe, 1835. 



Guide Syst. Dist. MoUusca, 1857, p. 81. 



Callianella(?) Isevis (Edwards, MS.), Sandberger, 1873. 



Callia ? Itsvis, 



Land- u. Siissw.-Conch. 1873, pi. xvii. fig. 13, p. 298. 



Mon. Pal. Soc. 1877, pi. xxxiv. figs. 3''-3>=, p. 333. 

 Horizon and Localities. 



Oligocene. — Bembridge Beds. Sconce ; Headon HUI. 



Family PATELLID^, Carpenter. 



Genus PATELLA, Linnasus, 1767. 

 Systema Naturaj, 1767, ed. 12, vol. i. part 2, p. 1267. 



Patella striata (Defrance, MS.), J. de C. Sowerby, 1823. 

 Patella striata. 



Mineral Conchology, 1823, pi, 389 (type missing). 

 Horizon and Locality. 



Middle Eocene. — Brachlesham Beds. Bramshaw. 



