LITHOPHAGA. 19 
12. S. rugosa, Lamarch, Sowerby, Genera of Shells, no. 25. f. 1-4. 
Mytilus rugosus, Linneus ; Hiatella rugosa, Fleming. 
13. S. solida, Sowerby, Pro. Zool. Soc. 1834. p. 88. 
14. S. tenuis, Sowerby, Pro. Zool. Soc. 1834. p.88. 
15. S. Veneriformis, Lamarck, Anim. sans vert. v. 6. p. 153. 
Genus II. PETRICOLA, Lamarck. 
1. P. amygdalina, Sowerby, Pro. Zool. Soc. 1834. p. 47. 
2. P. bidentata, Gray, Annals of Philosophy, p. 25. 
Mya bidentata, Montagu. 
3. P. concinna, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
4. P. costellata, Lamarck, Anim. sans vert. v. 6. p. 158. 
5. P. dactylus, Sowerby, Genera of Shells, no. 15. f. 3. 
6. P. denticulata, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
7. P. discors, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
8. P. elliptica, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
9. P. fabagella, Lamarck, Anim. sans vert. v.6. p. 159. 
10. P. fornieata, Say, Journ. Acad. Nat. Sci. Phil. vol. 2. p.319. 
11. P. lamellosa, Lamarck, Sowerby, Genera, no. 15. f. 5. 
Petricola rupestris, Sowerby. 
12. P. linguatula, Lamarck, Wood, Ind. Test. pl. 8. £72, 
Venus divergens, Wood; Venus lapicida, Chemnitz ; 
Venus lithophaga, Gmelin; Venus Solenoides, Péron. 
13. P. lucinalis, Zamarck, Anim. sans vert. v. 6. p. 157. 
Venus divaricata, Chemnitz. 
14. P. oblonga, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
15. P. ochroleuea, Lamarck, Sowerby, Genera, no. 15. f, 4. 
Tellina ochroleuca, Wood; Tellina fragilis, Linneus. 
16. P. Pholadiformis, Lamarck, Sowerby, Genera, no. 15. f.1 and 2. 
17. P. robusta, Sowerby, Pro. Zool. Soc. 1834. p. 47. 
18. P. roccellaria, Lamarck, Sowerby, Conch. Manual, f. 91. 
19. P. rugosa, Sowerby, Pro. Zool. Soc. 1834. p. 47. 
20. P. ruperelia, Lamarck, Anim. sans vert. v.6.p. 159. 
21. P. semilamellata, Lamarck, Anim. sans vert. v. 6. p. 157. 
22. P. solida, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
93. P. striata, Lamarck, Anim. sans vert. v. 6. p. 158. 
24. P. subglobosa, Sowerby, Genera of Shells, no. 15. f. 6. 
25. P. tenuis, Sowerby, Pro. Zool. Soc. 1834. p. 46. 
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