GASTROCHSNIDiE. PHOLADIDJE. 93 



Rocellaria Ranliniana, Deshayes, 1857. 



Gastrochana Rauliniana. 

 Uesc. Anim. siins Vert. 1857, vol. i. pi. ii. figs. 22-24, p. 100. 



Horizon and Localities. 

 Middle Eocene. — BrncJdesham Beds. Bramshaw ; Huntingbridge. 



Genus BRECHITES, Guettard, 1770. 

 Guettard's M^m. Sci. Arts, 1770, vol. iii. pi. vii. p. 154. 



Brechites coronata, Deshayes, 1824. 



Clavagella coronata. 

 Coq. Foss. Paris, 1824, vol. i. pi. v. figs. 15, 16, p. 8. 

 Mineral Conchology, 1834, pi. 480. fig. 1. (Sowerby OoU.) 

 Dixon's ' Sussex,' 1850, pi. ii. figs. 17, 19, p. 164. (Dixon Coll.) 



Horizons and Localities. 



Upp>r Eocene. — Barton Beds. High Cliff; Barton. 

 Middle Eocene. — Bracklesham Beds. Brackleaham Bay. 



Family PHOLADID^, Leach. 



Genus MARTESIA (Leach, MS.), Blainville, 1826. 

 Diet. Sc. Nat. 1826, vol. 39. p. 631. 



Martesia conoidea, Deshayes, 1824. 



Pholas conoidea. 



M6m. Soc. Hist. Nat. Paris, 1824, vol. i. part 2, pi. xv. fig. 6, p. 252. 



Horizon and Locality. 

 Upper Eocene. — Barton Beds. High Cliff. 



Martesia eleganS) Deshayes, 1857. 



Pholas elegaju. 

 Desc. Anim. sans Vert. 1857, Tol. i. pi. v. figs. 11-15, p. 137. 



Horizon and Locality. 



Upper Eocene. — Barton Beds. High Cliff. 



Martesia, sp. 



Horizons and Localities. 



Oligocene. — Bembridge Beds. Hempstead. — Headon Beds. Brockenhurst. 



Upper Eocene. — Barton Beds. High Cliff; Barton. 



Middle Eocene. — Bracklesham Beds. Bramshaw ; Huntingbridge. 



