BRITISH MOLLUSCA. 
155 
Crassina subrhomboidea, Turt. Brit. Biv. 129. 
Inhab. ? A single specimen is recorded to have been 
dredged off St. Abb’s Head by Mr. Laskey; Montagu. 
8. Capsa deflorata. 
Venus deflorata, Linn. S. N. ed. 12. 1133. no. 132; Gmel. 3274. 
no. 24 ; Penn . Brit. Zool. ed. 4. iv. 82. t. 57 . f. 54 ; Turt. Brit. 
Faun . 158. no. 271; Schroeter , Einl. iii. 131. no. 21; Chemn. 
Conch, vi. t. 9. f. 79; Brooks , Introd. Conch. 66. t. 3. f. 28 ; 
Dillw. R. S . i. 186. no. 65. 
Venus versicolor, Gmel. 3281. no. 63. 
Venus purpurata, Gmel. 3289. no. 100. 
Sanguinolaria rugosa, Lamk. Hist. v. ed. 2. vi. 170; Desh. Enc. 
Meth. iii. 925. no. 1. 
Psammobia rugosa, Sow. Gen. Psammob. f. 1. 
Lister, Conch, t. 425. f. 272, 273; Knorr, Vergn. ii. t. 20. f. 5, 
v. t. 2. f. 2 ; Enc. Meth. t. 231. f. 3, 4. 
Inhab. Indian Ocean. Introduced as British upon the authority 
of Pennant. 
9. Sph^rium lacustre. 
Cyclas lacustris, Drap. Moll. Ter. et Fluv. France, 130. t. 10. 
f. 6, 7 ; Turt. Man. Land fy Freshwater Shells, 14. t. 1. f. 4; 
2nd edit. Gray, 17 - t. 1. f. 4 ; Lamk. A. s.V. 2nd ed. vi. 268 ; 
Pfeiff. Deutsch. Land und Sussw. Moll. i. 122. t. 5. f. 6, 7 ; 
Kickx, Moll. Brab. 88; Gras, Moll. terr. et fluv. France, App. 
23 (from Drap.) ; Forbes Sf Hanley, Brit. Moll. ii. 118. 
Inhab. France. “ Exmouth ;” Jeffreys. 
10. Cardium serratum. 
Cardium serratum, Linn. S. N. ed. 12. 1123 ; Flem. Brit. An. 423; 
Dillw. R. S. 124; Chemn. Conch. Cab. vi. 193. 1. 18. f. 189; 
Mawe, Conchol. t. 7- f. 2; Hanley, Rec. Shells, i. 133; Reeve, 
Conch. Icon. Card. t. 1. f. 1; Forbes 8f Hanley, Brit. Moll. n. 
39. 
Cardium laevigatum, Spengler, Mag. Berl. Ges. Nat. ii. 125; 
Lamk. H. n. 26, ed. 2. vi. 403 ; Thorpe, Brit. Mar. Conch. 99. 
Card, citrinum, Wood, G. Conch, t. 54. f. 3; Turton, Bivalves , 
492. 1. 13. f. 5. 
Inhab. West Indies. Introduced by Dr. Fleming by mistake for 
C. laevigatum of Turton. 
11. Cardium medium. 
Cardium medium, Linn. S. N. 1122 ; Chemn. Conch, vi. 169. 1. 16. 
f. 162, 163 ; Don. B. S. i. t. 32. f. 1; Mont. T. B. 83 ; Linn. 
Trans, viii. 61 ; Wood, Gen. Conch. 211. t. 50. f. 3 ; Turt. Conch . 
