SI8TBMATIC INDEX. 



19. Anomia cylindiica. Lanwjllate Oval Scale-Oyster 



20. Anoriiia slriolata. Striolate Oval Scale-Oyster, 



SECTION II. DIMYARIA, 



FAMILY II. MYTILIXA, 

 •5. MrxiLTrs Mussel, 



21. Mytilus edulis. Eatable or Common Mttssel, 



A. M. edulis vulgaris. Common, . 



B. M. edulis pellucidus. Tliin-Shelled, 



C. M. edulis incurvatus. Incurved, 



D. M. edulis an^oilatus. Anji^ulate, 



E. M. edulis pusillus. Dwarf, 



fi. MODIOLA. MODIOLE, 



22. M/>diola harbata. Great Modiole. Horse Mu.9sel, 



23. Modiola discrepans. Compressed Ribbed Modiole. 



24. Modiola discors. Tumid Kibbed Modiole, 



7, Pinna. Fan-Mussel, 



25. Pinna ingens. Great Fan-Mussel, 



FAMILY III. UNIONINA, 



8. Anodon. Mud-Mussel, 



26. Anodon anatinus. Duck Mud-Mus.sel, 

 S. Alasmodon. Pkakl-Musskl, 



27. Alasmodon margaritiferus. Oblong Pearl-Mussel, 



FAMILY IV. APXIXA, 



10. Pej-;tun-culu3. Pectunclr, 



28. Pectunculus Glycimeria. Ribbed Pectuucle, 



11. XucuLA. Nucule, 



2it. Nucula Nucleus. Common or Pearly Nucule, 



30. Nucula tenuis. Thin Nucule, 



31. Nucula rostrata. Beaked Nucule, 



32. Nucula minuta. Minute Nucule, 



FAMILY V. CYCLADINA, 



12. Cyclas. Cycle, .... 



33. Cyclas flavescens- Yellowish Cycle, 



13. PiSIDIUM. PiSIDICM, 



34. Pisidium Joannis. John's Pisidium, 



35. Pisidium Jenynsii. Jenyns's Pisidium, 



36. Pisidium {julchelium. Beautiful Pisidium, 

 ii7. Pisidium nitidum. Shining Pisidium, . 

 38. Pisidium pusillum. Dwarf Pisidium, 

 89, Pisidium amnicum. River Pisidium, 



FAMILY VI. VENERINA, 



14. LUCINA. LUCINA, .... 



40. Luciua Radula. Wrinkled Lucina, 



41, Lucina spinifera. Spinous Lucina, 



42, Lucina lactea. Milk-white Lucina, 



43. Lucina leucoma. "White Lucina, 



15. CrraiN'A, Cyprina, 



Pages 



205, 2.32 

 20^3, 233 



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206, 2.33 

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206, 236 

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206, 2.'?ft 



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337 

 338 



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209, 248 

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209, 253 

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210, 2.S4 

 210, 2.54 

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