PTTLMONATA. HELICIT)^. 269 



Volvulella lanceolata, J. de C. Sowerby, 1850. 



Biilln lanceolata. 



Dixon's ' Sussex,' 1850, pi. vii. fig. 7, p. 177. (F. E. Edwards Coll) 



Horizons and Localities. 



Upper Koceiie. — Barton Beih. Barton ; High Cliff. 



Sliddle Eocene. — Brachlesham Beds. Bracklesham Bay ; Brook. 



Family UMBRELLIDtE, P. Fischer. 



Genus UMBRELLA, Lamarck, 1819. 

 Hist. Nat. Anim. sans Vert. 1819, vol. 6. part 1, p. .SSO. 



Umbrella Landunensis, Mellevilie, 1843. 



Umbrella Laudunensis. 

 Riviere's ^Vnn. Sci. Geologiques, 1843, vol. 2. pi. vi. figs. '6, 4, p. 00. 

 Desc. Anim. sans Vert. 1803, vol. ii. pi. iv. figs. 12, 13, p. 657. 

 Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. p. 322. 



Horizon and Locidities. 

 Middle Eocene. — Bracklesham Beds. Bramshaw ; Brook. 



Order POLYPLACOPHORA, Blainville. 



Family CHITONrD^, Guilding. 



Genus CHITON, Linnaeus, 1767. 

 Systema Naturse, 1767, ed. 12, vol. i. part. 2, p. 1106. 



Chiton, sp. 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. High Clifl'. 



Order PULMONATA, Cuvier. 

 Family HELICID^, J. E. Gray. 



Genus HELIX, Linnaeus, 1767, em. Miillor, 1774. 



Systema Naturse, 17G7, ed. 12, vol. i. part 2, p. 1241. 

 Verm. Terr. Fluv. 1774, vol. ii. p. 12. 



Helix D'Urbani, Edwards, 1852. 



Heli.T D' Urlani. 



MoQ. Pal. Soc. 1852, pi. x. figs. oa-S", p. 02. (F. E. Edwards Coll.) 

 Hyalinia 7)' Urbatii. 



Land- u. Siissw.-Conch. 1873, pi. xvii. fig. 7, p. 294. 



