BIVALVIA. 147 
9. Carpita imBRicata, Lamarck. Tab, XXI, fig. 10. 
Venus ImBRicaTA, Chen. Conch. Cab., t. vi, t. 30, figs. 314, 315, 1782. 
—  Eney. Meth., pl. 274, fig. 4, a, 6. 
—  «npricata, Gmel. Syst. Nat., p. 3277, No. 34, 1815. 
— — Lamarck. An. du Mus., t. ix, pl. 32, fig. 1. 
VENERICARDIA — Bronn. Syst. der Urw., p. 51, pl. 4, fig. 7, 1824. 
_ — Desh. Coq. foss. des Env. de Par., t.i, p. 152, pl. 24, figs. 4, 5, 1824. 
CaRDITA — Nyst. Coq. foss. de Belg., p. 209, No. 167, 1843. 
— — Desh. An. sans Vert. du Bas. de Par., t. i, p. 759, 1860. 
Spec. Char. C. Testé crassa, suborbiculatd, cordiformi, subobliqud, inequilaterali ; 
radiatim costatd costis numerosis, convewis, separatis, imbricato-squamosis ; umbonibus 
subelevatis obliquis, cordatis ; lunund minima profundissimd. 
Shell thick and strong, suborbicular, oblique, inequilateral, costated ; ribs numerous, 
convex, distinctly separated, covered with imbricated nodules; beaks small, slightly 
incurved, and heart-shaped ; lunule minute and deep. 
Diameter, 13 inch. 
Locality. Bracklesham Bay. 
France: Montmirail, Grignon, Courtagnon, &c. (Desh.). 
Belgium: Forét, Laeken, Gand (Vysé). 
Asia Minor: Zafranboli (Desf.). 
This is rare in England, and I have seen only one specimen. It is very abundant 
at Grignon. In these the large oblique tooth of the left valve extends as far as the liga- 
mental fulcrum, and in perfect specimens this tooth is vertically striated. 
M. Nyst has considered this species in his description as probably identical with 
Venericardia rotunda, Lea, to which certainly it bears resemblance ; but from the descrip- 
tion by Lea the ribs of his shell appear to be more thickly imbricated, and his figure does 
not represent it as so oblique. 
The variety called spessa by D’Orbigny I do not know. 
10. Carpita mitis? Lamarck. Tab. XXII, fig. 3, a, 4. 
VENERICARDIA MITIS? Lamarck. An. sans Vert., t. v, p. 611, No. 6, 1805. 
_ —? Desh. Coq. foss. des Eny. de Par., t. 1, p. 155, pl. 25, 
figs. 9, 10, 1824. 
CaRDITA — J. Sow. In Dixon’s Geol. of Suss., p. 92, 1850. 
Spec. Char. C. Testé rotundato-subobliqud, crassiusculd, tumidd, cordiformi, tnequi- 
lateruli, costatd, costis 23—26, in medio levigatis, convexis, utroque leviter granosis. 
