CONTENTS. 



SECOND PART. 



II. Subclass OSCULOSA 



Legion III. NASSELLARIA vel MONOPYLEA, 



Order 11. Nassoidea, 



,, 12. Plectoidea, 



„ 13. Stephoidea, 



„ 14. Spyroidea, 



,, 15. botryodea, 



„ 16. Ctrtoidea, 



Legion IV. PH^EODARIA vel CANNOPYLEA, 



Order 17. Ph^ocystina, 

 „ 18. Ph^08ph.€:ria, 

 ,, 19. Ph^ogromia, 

 „ 20. Ph^oconchia, 



Note on the Dimensions and Mbascrbmbnts, 



ADDENDA, ...... 



ERRATA, 



INDEX, ....... 



PAGE 



889 



889 



895 



898 



931 



1015 



1103 



1126 



1521 



1542 

 1590 

 1642 

 1710 



1760 



1761 



1763 



1765 



