VI CONTENTS. 



Page 



Family 2. Pectinacea 52 



3. Aviculacea 62 



4. Mytilacea 67 



5. Tridacnacea 74 



OltDER 2. BlMUSCULOSA 76 



Family 1. Chamacea lb. 



2. Naiades 79 



3. Trigonacea 90 



4. Arcacea 91 



5. Cardiacea 98 



6. conchacea 105 



7. Nymphacea 118 



8. LlTHOPHAGA 133 



9. Mactracea 136 



10. Myaria 146 



11. solenacea 162 



12. Pholadaria 167 



13. Tubicola 171 



Class 5. Brachiopoda 180 



ILLUSTKATIONS. 



Animals, Plates / to Q. 

 Shells, Plates 22 to 46 ; Fig. 123 to 24S. 



