OPISTHOBRANCHIATA. ACT^ONIB^. 261 



Actseon turgidus, Deshayes, 1862. 



Tornatella turgida. 

 Desc. Anim. sans Vert. 1802, vol. ii. pi. xxxvii. figs. 14-16, p. o94. 



Actceon turgidus. 

 Ann. Soc. R. Mai. Belgique, 1889, vol. xxiv. p. 299. 



Horizons and Localities. 

 Lower Eocene. — London Clay. Clarendon ; llighgate Wood, Finchley. — 

 Woolwich Beds. Bickley. 



Genus SOLIDULA, G. Fischer [de Waldheim], 1807. 

 Mus&m Demidoff (Moscow), 1807, vol. 3. p. 226. 



Solidula simulata, Solander, 1766. 



BuUa simulata. 

 Brander's ' Foss. Hant.' 1760, pi. iv. flg. 61, p. 29. 



Auricula simulata. 

 Mineral Conchology, 1817, pL 163. flgs..5-8. (Sowerby Coll.) 



Actceon simulatus ? 

 Dixon's ' Sussex/ 1850, pi. xiv. fig. 2-5, pp. 98, 110, 227. (Dixon Coll.) 



Horizons and Localities. 

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

 Middle Eocene. — BrachUsham Beds. Bracklesham Bay ; Huntingbridge : 



Stubbington. 

 Lower Eocene. — London Clay. Berkeley Square, London; llaverstock 



Hill ; llighgate ; Finchley ; Hampstead ; Clarendon ; Alum Bay (no. 4 



Bed); Bognor. 



Genus CRENILABIUM, Cossmaun, 1889. 

 Ann. Soc. E. Mai. Belgique. 1889, p. :)()". 



Crenilabium crenatum, J. de C. Sowerby, 1824. 



Aoiceon crenatus. 



Mineral Conchology, 1824, pi. 460. fig. 1. (Sowerby Coll.) 



Horizon and Locnlity. 

 Upper Eocene. — Barton Beds. High CliflF. 



Crenilabium crenatum, var. elongatum, J. de C. Sowerby, 1824. 



Actceon elonqatus. 

 Mineral Conchology, 1824, pi. 460. fig. 3. (Sowerby Coll.) 



Horizons and I^ocalities. 



Oligocene. — Headon Beds. Roydon. 

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

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

 Highgate ; Belsize Lane, 



