VENERIBiE. 65 



Cytherea lucida. 

 Dixon's ' Sussex,' 1850, pi. iii. fig. C, p. 107. (Dixon Coll.) 



Horizon and Localities. 

 Middle Eocene. — BracUesham Beds. Bracklesham Bay ; Stubbington. 



Meretrix obliqua, Deshayes, 1824. 



Cytherea obliqua. 

 Coq. Foss. Paris, 1824, vol. i. pi. xxi. figs. 7, 8, p. 136. 

 Dixon's 'Sussex,' 1850, pi. ii. fig. 5, p. 167. (Dixon Coll.) 



Horizons and Localities. 



Middle 'Eocem.— Bracklesham Beds. Bracklesham Bay. 

 Lower Eocene. — London Clay. Clarendon. 



Meretrix orbicularis (Edwards, MS.), Morris, 1852. 



Venus oralis, var. (?). 

 Mineral Conchology, 1827, pi. 567. fig 2. (Sowerby Coll.) 



Cytherea orbicularis. 

 Quart. Joinn. Geol. Soc. 1862, vol. viii. pi. xvi. fig. 5, p. 265. (F. E. Ed- 

 wards Coll.) 



Horizons and Localities. 

 Lower Eocene. — London Clay. Portsmouth ; Clarendon ; Charrington. — 

 Woolwich Beds. Upnor. — Thanet Sands. Heme Bay ; I'egwell Bay ; 

 near Faversham. 



Meretrix orbicularis, var. Portsmouthiensis, Edwards (MS.). 



Horizon and Locality. 



Lower Eocene. — London Clay. Portsmouth. 



Meretrix ovum, Edwards (MS.). 



Horizon and Locality. 



Lower Eocene. — London Clay. Clarendon. 



Meretrix Parisiensis, Deshayes, 1860. 

 Cytherea nitidula. 



Dixon's 'Sussex,' 1850, pi. iii. fig. 1.3, p. 91. (Dixon Coll.) 

 Cytherea Farisiensis. 



Desc. Anim. sans Vert. 1860, vol. i. pi. xxix. figs. 29-32, p. 441. 

 Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eooene.— Bracklesham Beds. Bracklesham Bay ; Stubbington. 



Meretrix Parisiensis, var. concentrica, Edwards (MS.). 



Horizon and Locality. 



Middle Eocene.— Bracklesham Beds. Bracklesham Bay. 



Meretrix partimsulcata, Edwards (MS.). 

 Horizmi and Locality. 

 Oligocene. — Headon Beds. Mead End. 



