CARDIUM. 123 



Inhabits the Mediterranean. Chemnitz. Coasts of Provence 

 and Languedoc. Bruguiere. 



Shell three inches long, two inches and a quarter broad, and 

 rather more than two inches high ; it differs from C. laviga- 

 turn in being considerably longer in proportion to the breadth, 

 more ventricose, and in having the longitudinal ribs rather 

 stronger, and the umbones more obliquely incurved towards 

 the posterior side ; the colour is yellowish, and it has been 

 described by Born for the C.flavum of Linnaeus ; Bruguiere 

 still more erroneously has described it for the Linnaean C. 

 serratum, and has confounded C. lavigatum with it. 



LjEVIGATtjm. 27. Shell ob-ovate, obsoletely ribbed 

 longitudinally, except at the two ends, which 

 are nearly smooth. 



Cardium laevigatum. Linnaus Syst. Nat. p. 1123. Pen- 

 nant Brit. Zool. iv. p. 91. t. 51. f. 40. Da Costa Brit. 

 Conch, p. 178. t. 13. f. 6. Donovan, ii. t. 54. Montagu 

 Test. p. 80. Maton and Racket, in Lit?. Trans, viii. 

 p. 65. Dorset Cat. p. 31. t. 7. f. 6. Wood's Conch. 

 p. 222. t. 54. f. 1. 

 Cardium crassum. Gmelin, p. 3254. 

 Cardium, No. 12. Schroeter Einl. iii. p. 57. t. 7. f. 12. 

 Cardium fluviatile. Gmelin, p. 3255. 

 Lister Anim. Ang. t. 5. f. 32. Conch, t. 332. f. 169. Pe- 

 ttier Gaz. t. 93. f, 10. 

 Inhabits the Mediterranean and North Sea. Schroeter. Coasts 



of Britain. Pennant, &jc. 

 The length, which but very little exceeds the breadth, is about 

 two inches, and the height in a shell of this size does not ex- 

 ceed an inch and a quarter ; it is a strong shell, with nume- 

 rous longitudinal rather obsolete ribs, and irregular transverse 

 striae, covered with a glossy yellowish brown epidermis, be- 

 neath which it is whitish, or flesh-coloured ; the anterior end 

 is smooth, and the other end is only faintly striated ; young 

 shells are beautifully polished, and mottled with reddish 

 brown, or pink, in which state the species appears to have 

 been described by Linnaeus in his account of the Museum of 

 the Queen Ulrica, and this has induced several subsequent 

 authors to consider the C. lavigatum to be another species. 



mneatum. 28. Shell oblong-ovate, compressed, 

 longitudinally striated, and the inside marked 

 with two oblong purple spots. 



