26 
BRITISH MOLLUSCA. 
Var, 
Cardium rusticum, Chemn. (not Linn, nor Hanl.) Conch. Cab.vL 
1. 19. f. 197 ; Mont. Test. Brit. 569 ; Donov. Brit. Shells, iv. 
t. 124. f. 2; Poli, Test. Sic. 1. 17. f. 12, 13 ; Lamk. Hist. 2nd 
ed. vi. 405; Desh. Elem. Conch, t. 25. f. 1; Philippi, Moll. 
Sic. i, 52. t. 4. f. 12-14, ii. 38; Forbes fy Hanley, Brit. Moll. 
ii. 18. 
C. edule, /3. rusticum, Leach, Ann. fy Mag. N. H. xx. 1847, 272. 
C. glaucum, Brug. Enc. Meth. Vers, i. 221 ; Poiret, Voy. Barb. 
ii. 13; Wood, Gen. Conch. 218; Dillw. Bee. Shells, i. 130; 
Hanley, Bee. Shells, Supp. t. 17. f. 36. 
Cerastes cinnabarinus, Cerastoderma rusticum, Poli, ii. 252, 258. 
C. Lamarckii, Beeve, Conch. Icon. Card. 1. 18. f. 93. 
C. Belticum, Beeve, l. c. t. 20. f. 113. 
C. edule, Brown, III. C. G. B. t. 35. f. 7 ; Philippi, Moll „ Sic . 
i. 52, ii. 39. 
Var. fluviatile. 
Cardium edule, var. fluviatile, Witham, Trans. Wern . Soc . v. 577 » 
Cardium tenuis, Brown, III. C. G. B. t. 22. f. 4. 
a — d, var. large. Stornoway. 
e — v. Britain. 
w — y. Bomney. 
2 r — d d, var. Britain. 
e e, ff, var. Hoylake. 
g g. (Cardium rusticum.) Hastings. 
h h — o o. (Ditto.) Britain. 
pp, var. Britain. 
q q — w w, var. Portsea. 
xx, y y. (Cardium zonarium). Sow. (fide Bean). England. 
z z, var. distorted. Britain. 
*** Hemicardium. 
5. Cardium nodosum. 
Cardium nodosum, Mont. T. B. 81; Turt on, Bivalves, 186. 1. 13. 
f. 8 ; Hanley, Bee. Shells, 136, Supp. t. 17. f. 44 ; Loven, I. M. 
36. n. 268; Jeffreys, Ann. N. H. xix. 313; Beeve, Conch. Icon. 
Card. t. 22. f. 128 ; Forbes Sf Hanley, Brit. Moll . ii. 22. t. 32. 
f. 7 ; Penn. B. Z. 1812, iv. 189. no. 11. 
? C. discrepans. Brown, III. C. t. 22. f. 9. 
Cardium tuberculatum, /3. nodosum, Leach, Ann. Mag. N. H. 
xx. 272, 1847. 
C. scabrum, Philippi, Moll. Sic. ii. t. 14. f. 16; Hanley, Bee . 
Shells, Supp. 1. 17- f. 43. 
a — h. Edinburgh. Presented by Miss Greville. 
i — m. Scotland. 
n— p. Torquay. 
