84 LAMELWBKANCniATA. 



Family MACTRID^, Lamarck. 



Genus MACTRA, Linnaeus, 1767. 

 Systema Naturae, 1767, vol. i. p. 1125. 



Mactra compressa, Deshayes, 1830. 



Mactra depressa. 



Coq. Foss. Paris, 1824, vol. i. pi. iv. figs. 11-14, p. 32. 



Mactra compressa. 



Encycl. M6th. 1830, vol. 2. p. 399. 



Dixon's ' Sussex,' 1850, pL iii. figs. 3, 3», p. 88. (Dixon Coll.) 



Mactra contradicta. 



Desc. Anim. sans Vert. 1857, vol. i. pi. xviii. figs. 19-21, p. 288. 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — BracMesham Beds. Bracklesham Bay. 



Mactra donaciformis, Edwards (MS.). 



Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Mactra fastigiata, Edwards (MS.). 



Horizon and Locality. 

 Oligocene. — Headon Beds. Colwell Bay. 



Mactra filosa, Edwards (MS.). 



Horizon and Localities, 



Oligocene. — Headon Beds. Mead End ; ColweU Bay. 



Mactra lineatissima (Edwards, MS.). 



Horizon and Locality. 



Middle Eocene. — Bracklesham Beds, Bracklesham Bay. 



Mactra semisulcata, Lamarck, 1805 and 1807. 



Mactra semisulcata. 



Ann. Mus. 1805, vol. 6. p. 412 ; 1807, vol. 9. pi. xviii. figs. 3», 3''. 

 Dixon's ' Sussex,' 1850, pi. iii. fig. 10, p. 88. (F. E. Edwards CoU.) 



Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Genus CARDILIA, Deshayes, 1835. 

 Hist. Nat. Anim. sans Vert. 1835, ed. 2, pp. 448-450. 



Cardilia Michelini, Deshayes, 1827. 



Hemicyclonosta Michelini, 

 F6i-ussac, Bull. Sc. Nat. G^ol. 1827, 2nd Section, pp. 446, 447. 



Cardilia 3Iichelini. 

 Hist. Nat. Anim. sans Vert. 1835, ed. 2, p. 450. 



