BRITISH MOLLUSCA. 
2 3 
7. PlSUM CINEREUM. 
Pisidium cinereum, Alder , Cat. Supp. 4 ; Mag. Z. fy Bot. ii. 119 ; 
Brown , III. Conch. G. B. 95. t. 39. f. 28 ; Forbes Sf Hanley , 
Brit. Moll. ii. 125. t. 36. f. 2; Gray , Man. L. fy F. W. Shells, 
286. 1. 12. f. 152; Thompson, Ann. Nat. Hist. vi. 196. 
Var. More ventricose, and produced at the umbones. 
Cyclas cinerea, Hanley, Bee. Shells, i. 90, Supp. t. 14. f. 44. 
a — Wm Castle Eden. Presented by Joshua Alder, Esq. 
x — k k. Scarborough. From Mr. Bean’s Collection. 
Fam. 3. Cardiad^e. 
Cardiadse, Gray, Syn. B. M. 1840, 1842, 75, 91 ; Proc. Zool. Soc . 
1848, 185. 
Cerastes or Cerastoderma, Poli, Test. Sicil. 1791. 
Les Cardiacees, pars, Lamk. Cour. 106, 1812. 
Bucardes ou Cardiaces, Feruss. Prod. 44. 
Yeneridia Isoperia, pars, Bafin. Anal. Nat. 1815. 
Conchaces, § 2, Bang, Man. Mol. 304. 
Cardiacea, Menke, Syn. 49 ; Alton , Verz. Conch. 12. 
Cardiina, Macgilliv. Moll. Aberd. 213. 
Yeneriadse, part., Leach, 1818 ; Ann. fy Mag. N. H. xx. 1847, 272. 
1. Cardium. 
Cardium (costatum), Linn. S. N. ed. 10, ed. 12. i. 1122 ; Gmelin, 
S. N. i. 3244 ; Brug. E. M. i. 203 ; Lamk. Syst. 119, 1801 ; 
Hist. vi. 2, ed. 2. vi. 388 ; Megerle, 1811 ; Schum. N. S. 158 ; 
Spengler , Skrift. Nat. Selsk. vi. ; Sow, Conch. Illust. 
Pectunculus, Adanson, Seneg. 
Lsevicardium (laevigatum), Swainson, Malac. 1840. 
Hemicardium (Unedo), Swainson, Mai. 1840. 
Hemicardia, sp. Klein . 
Isocardia, sp. Klein . 
Circulum, sp. (fragum), sp. Bolten. 
* Acanthocardia. 
1. Cardium aculeatum. 
Cardium aculeatum, Linn. S. N. 1122; Chemn. Conch. Cab. vi. 161. 
1. 15. f. 157 ; Penn. B. Z. ed. 4. iv. 76. t. 50. f. 37; Da Costa, 
175; Donov. B. S. i. t. 6; Mont. T. B. 77- Supp. 30; Wood, 
Gen. Conch. 207. t. 48 ? f. 1 ; Turt. Conch. Diet. 28 ; Brit. Biv. 
181. 1 . 13. f. 6, 7; Poli , Test. Sic. t. 17. f. 1-3; Dillw. Bec. 
Shells, i. 114 ; Lamk. H. n. 14. 2nd ed. vi. 397 ; E. M. t. 297. 
f. 5 ; Philippi, Moll. Sic. i. 50, ii. 37 ; Beeve, Conch. Icon. 
Cardium, t. 4. f. 17 ; Forbes fy Hanley, Brit. Moll. ii. 4. t. 33. 
