OSTREIDJ!. 3 



Ostrea dorsata, Deshayes, 1824. 



Oatrea dorsata. 

 Coq. Foss. Paris, 1824, vol. i. pi. Iv. figs. 9-11, p. 355. 

 Mineral Conchologry, 1825, pi. 489. fig. 1. (Sowerby Coll.) 

 Mon. Pal. Soc. 1861, pi. vi. fig. 2, p. 20. (F. E. Edwards Coll.) 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — Brackleshayn Beds. Bracklesham Bay. 



Ostrea elegans (?), Deshayes, 1824. 



Ostrea elegans. 

 Coq. Foss. Paris, 1824, vol. i. pi. 1. figs. 7-9, p. 361. 

 Mon. Pal. Soc. 1861, p. 21. (F. E. Edwards Coll.) 



Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Ostrea flabellula, Lamarck, 1806 and 1809. 



Ostrea fiabellula. 

 Ann. Mus. 1806, vol. 8. p. 104 ; 1809, vol. 14. pi. xxv. fig. 3. 

 Mineral Conchology, 1819, pi. 253. figs. 2-9. CSowerby Coll.) 

 Dixon's 'Sussex,' 1850, pi. IV. fig. 5, p. 95. (Dixon CoU.) 

 Mon. Pal. Soc. 1861, pi. iii. figs. 4^-4'', p. 21. (F. E. Edwards CoU.) 



Horizons and Localities. 

 Oligocene. — Headon Beds. Colwell Bay ; Roydon ; Lyndhurst. 

 Upper Eocene. — Barton Beds. Barton ; High CUff ; Alum Bay (no. 29 



Bed). 

 Middle Eocene. — Bracklesham Beds. Bracklesham Bay ; Bramshaw ; Brook ; 



Stubbington ; Huntingbridge. 



Ostrea flabellula, var. modicella, S. V. Wood, 1861. 



Ostrea flahellvla, var. modicella. 

 Mon. Pal. Soc. 1861, pi. viii. fig. 5, p. 21. (F. E. Edwards CoU.) 



Horizon and Locality. 

 Lower Eocene. — London Clay. Clarendon. 



Ostrea gigantea, J. Sowerby, 1814. 



Ostrea yigantea. 

 Mineral Conchology, 1814, pi. 64. 

 Mon. Pal. Soc. 1861, pi. ii. fig. V, p. 23. (F. E. Edwards CoU.) 



Horizons and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay; Brook; Hunting- 

 bridge. 

 Lower Eocene. — Woolwich Beds. Chiselhurst. 



Ostrea gryphovicina, S. V. Wood, 1861. 



Ostrea f/ryphoiicind. 

 Mon. Pal. Soc. 1861, pi. vii. figs. 6", &>, p. 25. (Bowerbank and Wetherell 



Colls.) 



Horizon and Localities. 

 Lower Eocene. — London Clay. Hampstcad ; Sheppey. , 



b2 



