26 
BRITISH MOLLUSCA. 
Var. 
Cardium rusticum, Chemn. (not Linn, nor Hanl.) Conch. Cab. vi. 
1. 19. f. 197 ; Mont. Test. Brit. 569 ; JDonov. Brit. Shells , iv. 
t. 124. f. 2; Poli , Test. Sic. 1 . 17. f. 12, 13; LamJc. 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 , BriZ. ilfoZZ. 
ii. 18. 
C. edule, /3. rusticum, Leach , ilfejr. ZV. if. xx. 1847, 272. 
C. glaucum, Bruy. Enc. Meth. Vers , i. 221 ; Poiret, Voy. Barb. 
ii, 13 ; Wood, Gen. Conch. 218 ; Dillw. Rec. Shells, i. 130 ; 
Hanley, Rec. Shells, Supp. t. 17. f. 36. 
Cerastes cinnabarinus, Cerastoderma rusticum, Poli, ii. 252, 258. 
C. Lamarckii, Reeve, Conch. Icon. Card . 1 . 18. f. 93. 
C. Belticum, Reeve, l. c. t. 20. f. 113. 
C. edule. Brown, III. C. G. B. t. 35. f. 7 ; Philippi, Moll. Sic . 
i. 52, ii. 39. 
Yar. iluviatile. 
Cardium edule, var. iluviatile, 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. Romney. 
0 — d d, var. Britain. 
e e, ff, var. Hoy lake. 
g g. (Cardium rusticum.) Hastings. 
hh~oo. (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; Turton, Bivalves, 186. 1. 13. 
f. 8 ; Hanley, Rec. Shells, 136, Supp. 1. 17. f. 44 ; Loven, I. M. 
36. n. 268; Jeffreys, Ann. N. H. xix. 313; Reeve, Conch. Icon. 
Card. t. 22. f. 128 ; Forbes §• 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. 8f Mag. N. H. 
xx. 272, 1847. 
C. scabrum, Philippi, Moll. Sic. ii. t. 14. f. 16; Hanley, Rec . 
Shells, Supp. 1. 17. f. 43. 
a — h. Edinburgh. Presented by Miss Greville. 
1 — m. Scotland. 
n—p. Torquay. 
