PROSOBRANCHIATA. FUSLD^. 161 



Genus TROPHON, Montfort, 1810. 

 Coneh. Syst. 1810, vol. 2. pp. 482, 483. 



Trophon gradatum, Edwards (MS.). 



Horizon and Locality. 

 Lower Eocene. — Thanet Beds. Heme Bay. 



Trophon subnodosum, Morris, 1852. 



Trophon gubnodosum. 

 Quart. Journ. Geol. Soc. 1852, vol. viii. pi. xvi. fig. 10, p. 2G0. 



Horizon and Localities. 

 Lower Eocene. — London Clay. Portsmouth; Elmstead. — Reading Beds. 

 Reading. — Thanet Sands. Heme Bay. 



Trophon tuberosum, J. Sowerby, 1819. 



Mure.v ttiberosiis. 

 Mineral Conchology, 1819, pi. 229. fig. 1. (Sowerby Coll.) 



Murex torosus. 

 lllust. Foss. Conch. 1849, pi. xxxiv. fig. 20, p. 56. 



thisus tuberosus. 



Dixon's 'Sussex,' 18.50, pi. xiv. fig. 29, p. 119. (Bowerbank Coll.) 



Horizon and Localities. 



Lower Eocene. — London Clay. Bognor ; Highgate ; Clarendon ; Hartford 

 Bridge. 



Trophon undosum, J. do C. Sowerby, 1850. 



Fusiis undosus. 

 Dixon's 'Sussex,' 18.50, pi. vii. fig. 39, pp. 18-5, 227. (F. E. Edwards Coll.) 



Horizons and Localities. 



Middle Eocene. — Brackle^ham Beds. Biacklesham Bay. 

 Lower Eocene. — London Clay. Bognor. 



Family FUSID.E, Orbigny. 



Ueuus PUSUS (Xlein, 1753), Lamarck, 1799. 



Ostracologica;, 1753, pi. iv. fig. 78, p. 00 ; M^m. Soc. Hist. Nat. Paris, 1799, 



p. 73. 



Pnsus aciculatus, Lamarck, 1803 and 1805. 

 Murex porrectus. 

 Brander's ' Foss. Hant.' 1766, pi. ii. fig. 36, p. 21 . (Brauder Coll.) 



T\tsut aciculaftu. 



Ann. Mu3. 1803, vol. 2. p. 318; 1805, vol. 6. pi. iv. fig. 6. 



t'utm acuminatii.1. 



Mineral Couchology, 1«21, pi. 274. figs. 1-3 (tig. 1, Sowerby Coll.). 



