348 DONACIDvE. 



Mesodesma cornea, Poli (not Lamarck). 



Mactra cornea, PoLi, Test. Sicil. vol. ii. pi. 19, f. 8 to 11. 



Doruut plcbuia, Pulteney, Hutcliins Hist. Dorset, p. 32 Mont. Test. Britan. 



p. 107, pi. 5, f. 2.— Dorset Catalog, p. 34, pi. 5, f. 13.— Turt. 

 Conch. Diction, p. 42. —Turt. Dithyra Brit. p. 126. — Flem. 

 Brit. Anini. p. 434. — Dillw. Recent Shells, vol. i. p. 152. — 

 Index Testaceolog. pi. 6, Donax, f. 9. 

 Ampliidcsma Donacilla, Lam. Anim. s. Vert. (ed. Desh.) vol. vi. p. 126. 

 Erycimi pkhcki, Sowerby, Genera Shells, Erycina, f. 3. — Sou'erbv, Conch. 



Manual, f. 86. 

 Mesodesma DoiiaciUum, Desh. in Lam. Anim. s. Vert. (ed. Desh.) vol. vi. p. 

 133. — Brit. Marine Conch, p. 53. — Reeve, Conch. 

 System, pi. 45, f. 5. — Hanl. Recent Shells, p. 39, 

 suppl. pi. 11, f. 41. — Philippi, Moll. Sicil. vol. ii. 

 p. 29.— Desh. Exp. Sclent. Algerie, Moll. pi. 39, 40, 

 41, 42. (shell and animal). 

 Donac'dla Lamarckii, PiiiLiPPi, Moll. Sicil. vol. i. p. 37. 



An inhahitant of the Mediterranean ; introduced hy Dr. Pxdte- 

 ney as taken at Weymouth. The original specimens of plebeia are 

 still 2)reserved in the doctor's collection at the Linnean Museum, 

 and are clearly identical (which some have doubted) with the 

 Douaoilla of Lamarck. 



