60 



LAMELLIBHANCniATA 



Cyclas tumiduki. 



'Mod. Pal. Soc. (Supp.), 1877, pi. n. fig. 4, p. 19. 

 Horizons and Localities. 



Oligocane.— Hempstead Beds. Hempstead. — Hcadon Beds. Hordwell. 



Sphserium Headonense, Edwards (MS.). 

 Horizon and Locality. 

 Oligocene. — Headon Beds. Headon Hill. 



Sphserium Morrisii, Edwards (MS.). 



Horizon and Locality. 

 Oligocene. — Hempstead Beds. Hempstead. 



Family CYPRINID^, Lamarck. 



Genus CYPRINA, Lamarck, 1812 and 1818. 



Extrait Cours Zool. 1812, p. 107. 



Hist. Nat. Anim. sans Vert. 1818, vol. 5. p. -550. 



Cyprina Morrisii, J. do C. Sowerby, 1837 and 1841. 



Venus Morrisii. 

 Lond. & Edin. Pliil. Mag. 1837, vol. x. ser. 3, p. 2.30. 



Cyprina Morrisii. 

 Mineral Conohology, 1841, pi. 620 (fig. 3, Bowerbank Coll.)'; (figs. 2, 4, 5, 

 6, Sowerby Coll.). 



Horizons and Localities. 

 Lower Eocene. — London Clay. Harwich ; Bognor ; Alnm Bay (no. 4 Bed). 

 — Thanet Sand.^. Heme Bay; Pegwell Bay; Richboro ; Boughton, 

 near Canterbury. 



C3rprina(?) nana, J. do C. Sowerby, 1850. 



Cy)n-ina(?') nana. 

 ' Dixon's ' Sussex,' 1860, pi. xiv. fig. 8, p. 22.5. (Dixon Coll.) 



Horizon and Locality. 



Lower Eocene. — London Clay. Bognor. 



Cyprina Scutellaria, Lamarck, 1806. 



Cyfherea Scutellaria. 

 Ann. Mus. 1806, vol. 7. p. 133. 



Cyprina planata. 

 Mineral Conchology, 1841, pi. 019. (Sowerby Coll.) 

 Dixon's 'Sussex,' 1850, pi. xiv. fig. 11, pp. 110, 225. (Dixon Coll.) 



Cyprina Scutellaria. 

 Desc. Anim. sans Vert. 1860, vol. 1. p. 545. 



