ANATINIDJE. 83 



Pholadomya virgtilosa, J. de C. Sowerby, 1844. 



Pliolndomya virgulosn. 



Mineral Conchology, 1844, pi. 030. fig. 1. 



Dixon's ' Sussex,' 1850, pi. xiv. fig. 31, p. 226. (Dixon CoU.) 



Horizon and Localities. 

 Lower Eocene.- — London Clay. Portsmouth ; Bognor. 



Genus THRACIA (Leach, MS.), De Blainville, 1824. 

 Diet. Sc. Nat. 1824, vol. 32. p. 347. 



Thracia Bartonensis, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Thracia granulatissima, Edwards (MS.). 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Thracia oblata, J. de C. Sowerby, 1826. 



Lutrariai?) oblata. 



Mineral Conchology, 1826, pi. 534. fig. 3. 



Thracia oblata. 

 Mineral Conchology, 1844, pi. C32. figs. 1, 2. (Sowerby and Bowerbank 

 CoUs.) 



Horizons and Localities. 

 Lower Eocene. — London Clay. Bognor. — Thanet Sands. Heme Bay; 

 Pegwell Bay. 



Thracia sulcata, J. de C. Sowerby, 1844. 



Thracia sulcata. 



Mineral Conchology, 1844, pi. 632. fig. 3. (F. E. Edwards Coll.) 

 Horizon and Locality. 



Middle Eocene. — Bracklesham Beds. Bracklesham Bay. 



Genus CRYPTODON *, Turton, 1822. 

 Conch. Insul. Brit. 1822, pi. 7. figs. 9, 10, p. 121. 



Cryptodon Goodhalli, J. de C. Sowerby, 1837. 



Lucina Goodhalli. 



Trans. Geol. Soc. 1837, ser. 2, vol. v. part 1, pi. viii. fig. 7, p. 136. 

 (Wetherell Coll.) 



Horizon and Localities. 



Upper Eocene. — Barton Beds. Barton. 



Lower Eocene. — London Clay. Copenhagen Fields; Potter's Bar: High- 

 gate ; Boreham Wood, Finchley ; Haverstock Hill ; Chalk Farm Tunnel ; 

 Muswell Hill. — Thanet Sands. Heme Bay. 



* This genus belongs to the Lucinidse, and should follow Lucina vicuna on p. 46. 



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