166 EOCENE MOLLUSCA. 



Locality. Bracklesham Bay {Fisher). 



France : Grignon, Courtagnon, Chaumont [Besliayes) . 



A single specimen is all that I have seen. It enriches the cabinet of, and was found 

 by, the Rev. O. Fisher. The English specimen is the right valve, and it diflFers somewhat 

 from the figure and description of the French shell, especially so from some specimens I 

 have from Chaumont, which are much more gibbous or tumid, and broader or higher on 

 the siphonal side. Our shell is ^so more rounded on the pedilateral margin than the 

 French specimens. I feel unwilling to propose a new name, but, if some more specimens 

 should confirm the great differences between the English fossils and those from France as 

 being specific, I would call it C. Fisheri. M. Deshayes has figured a shell which he has 

 called C. distinda. This is flatter than yibbosula, and it has fewer and smaller ridges than 

 those upon our specimen, which appears of an intermediate character. This species is 

 given from the nummulitic deposit in the province of Barcelona by M. Alex. Vezian, 

 'Bull, de la Soc. Geol. de Fr.', 2nd series, vol. xiv, p. 337. 



6. Crassatella Grignonensis, Deshayes. PI. XXIII, fig. 8 a, h. 



Crassatella Grignonensis, Desk. An. sans Vert, du Bass, de Par., p. 748, pi. xx, 



figs. 3—5, 1860. 

 — COMPRESSA, var., /. Sow. In Dixon's Geol. of Sussex, p. 88, pi. xi, 



fig. 21, 1850. 



Sjjec. Char. C." Testa transversa, ovato-triyond, inaquilaterali ; antice ohtusd ; pos- 

 terius oblique truncatd, anyido obtuso, inaqualiter bipartitd transversim tenue et reyulariter 

 sulcata, sulcis adlatus posticum evanescentibus ; umbonibus minimis, acutis, depressis, pro- 

 eminentibus ; lunula anyustissima profunda ; ano depresso, Iceviyato, lanceolato ; car dine 

 anyusto ; dentibus minimis anyustis simplicibus ; maryinibus in medio tenuissime crenu- 

 latis." — Deshayes. 



Shell transverse, ovately triangular, or rather irregularly oblong, inequilateral ; pedal 

 side short and rounded ; siphonal side produced, obtusely angulated ; exterior with 

 numerous and fine ridges, less distinct on the anal region, or side beyond the angular 

 slope ; beaks small, depressed ; lunule elongate and narrow ; margins finely crenulated in 

 the middle, smooth at the sides ; cardinal tooth serrated, 



Lenyth, f ths of an inch ; heiyht, f ths of an inch. 



Localities. Bracklesham Bay {Edwards). 



France : Grignon, Barnes, Calc, gross. {Deshayes). 



Not having the French specimens to compare with, I have placed the English fossil 

 as an identity, depending upon figures and descriptions above referred to. Fig. 10 is, I 

 think, a variety of this species, which may be called Anylica. It much resembles, and at one 

 time I thought it identical with, Cr. donacialis, Desh., but it appears to differ in form, and 



