a 
Sa us idle 
MACTRACEA. 17 
Genus VII. AMPHIDESMA, Lamarck. 
1. A.wquale, Say, Journ. A. N.S. Phil. v.2; Amer. Conch. pl. 28. 
2. A. aibellum, Lamarck, Anim. sans vert. v. 6. p. 127. 
3. 
4. 
PPP PDD DP >> bP> bb >b bb 
> PP >> >> > 
A. australe, Sowerby, Pro. Zool. Soc. 1832 ; Conch. Illus. f. 4. 
A. 
Boysii, Lamarck, Sowerby, Species Conch. (inedit.) f. 23. 
Mactra Boysii, Montagu; Mactra alba, Wood ; Amphi- 
desma album, Fleming. 
. cancellatum, Sowerby, Species Conchyliorum, (inedit.) f. 8. 
. cordiforme, Sowerby, Species Conchyliorum, (inedit.) f. 7. 
Tellina cordiformis, Chemnitz. 
. corrugatum, Sowerby, Pro. Z. S.1832; Species Conch. f.18. 
crenulatum, Sowerby, Species Conch. (inedit.) f. 13. 
. decisum, Conrad, Journ. A. N.S. Phil. v. 7. pl. 19. f. 2. 
decussatum, Gray, Annals of Philosophy, p. 25, 
Tellina decussata, Wood. 
duplicatum, Sowerby, Species Conch. f. 14 and 15. 
: ellipticwsn, Sowerby, Pro. Z. 8.1832 ; Spee. Conch. f. 17. W- Columbre 
flexuosum, Lamarck, Turton, Brit. Biv. pl. ’7.f. 9 and 10. 
Tellina fiecuosa, Maton ; Venus flexuosa, Donovan ; Cryp- 
todon flexuosum, Turton; Zhyasira Slexuosa, Leach. 
. formosum, Sowerby, Pro. Z. 8S. 1832; Conch. Illus. f. 8. 
leve, Sowerby, Pro. Z. S. 1832 ; Conch. Illus. f. 6. 
lamellosum, Sowerby, Species Conchyliorum, f.9 and 19. 
. lenticulare, Sowerby, Pro. Z. S. 1852; Conch. Illus. f. 9. 
. multicostatum, Sowerby, Species Conchyliorum, f. 16. 
. nucleolum, Lamarck, Anim. sans vert. v. 6. p. 130. 
orbiculatum, Say, Journ. Acad. Nat. Sci. Phil. v. 2. p. 307. 
. pallidum, Sowerby, Pro. Z. S. 1832; Conch. Illus. f. 3. 
. physoides, Lamarck, Anim. sans vert. v. 6. p. 130. 
prismaticum, Lamarck, Wood, Ind. Test. pl. 2. f. 21. 
Mya prismatica, Wood; Ligula prismatica, Montagu ; 
Abra prismatica, Leach. 
. pulehrum, Sowerby, Pro. Z. S. 1832 ; Conch. Illus. f. 2. 
punctatum, Say, Journ. Acad. Nat. Sci. Phil. v. 2. p. 308, 
. punctatum, Sowerby, Pro. Z. S. 1832 ; Conch. Illus. f. 7, 
. purpurascens, Lamarck, Anim. sans vert. v. 6. p. 129, 
. purpurascens, Sowerby, Pro. Z.S. 1832 ; Conch. Illus. f. 5, 
. reticulatum, Sowerby, Species Conchyliorum, f.11 and 12, 
. roseum, Sowerby, Pro. Z. S. 1832; Conch. Illus. f. 1. 
. rubrolineatum, Conrad, Journ. A, N.S. Phil. v. 7. pl. 18. f. 11, 
Cc 
