14 LAMELLIBBANCHIATA. 



Modiola tenuistriata, Melleville, 1843. 



Modiola tenuistriata. 



M«m. Sables Tert. Inf. Paris, 1843, pi. ii. figs. 17-19, p. 39. 

 Mon. Pal Soc. 1861, pi xiii. fig. 3, p. 73. (F. E. Edwards CoU.) 



Horizon and Locality. 



Upper Eocene. — Barton Beds. Barton. 



Genus LITHODOMUS, Cuvier, 1817. 

 Regne Animal, vol. ii. p. 471. 



Liithodomus Deshayesii, J. de C. Sowerby, 1850. 



Lithodomus Deshayesii. 

 Dixon's ' Sussex,' 1860, pi. ii. fig. 28, pp. 94, 171. 



Modiola Deshayesii. 

 Mon. Pal. Soc. 1861, pi. xiii. figs. 14', 14', p. 64. 



Horizon and Locality. 

 Middle Eocene. — Bracklesham Beds. Brook. 



liithodomus Deshayesii (?), var. Hempsteadiensis, S. V. Wood, 



1864. 

 Modiola Deshayesii {?), var. Hempsteadiensis. 



Mon. Pal. Soc. 1864, pi. xix. figs. 19', 19"', p. 76. (F. E. Edwards Coll.) 



Horizon and Locality. 



Oligocene. — Hempstead Beds. Hempstead. 



Genus DREISSENA, Van Beneden, 1835. 

 Ann. Sci. Nat. 1835, 2nd ser. vol. 3. pi. 8, p. 193. 



Dreissena Brardii, Faujas de St. Fond, 1806, and A. Brongniart, 

 1823. 



Moule. 

 Ann. Mus. 1806, vol. 8. pi. 58. figs. 11, 12, p. 379. 



MytUus Brardii. 



IsUm. Terr. S6d. Vicentin, 1823, pi. vi. fig. 14, p. 78. 

 Mineral Conchology, 1826, pi. 532. fig. 2. (Sowerby Coll.) 



Dreissena Brardii. 



Mon. Pal. Soc. 1861, pi. xii. figs. 3'-3«, p. 59. (F. E. Edwards Coll.) 



Horizons and Localities. 



Oligocene. — HeadonBeds. Mead End ; Hord well. — Hempstead Beds. Hemp- 

 stead. 



Genus CRENELLA, Brown, 1827. 



Illust. Con. Gt. Britain, 1827, pi. 31. figs. 12-14; 1844, 2nd ed., pi. 23. 

 figs. 12-14, p. 75. 



Crenella (Crenellodon, Edwards, MS.) pulcherrima, Edw. (MS.). 



Horizon and Locality. 

 Oligocene. — Headon Beds, Hordwell. 



