Chapter IX: Geographical Distribution, cxlvi

" X. Geological Distribution, clxiv

V. Bibliographical Section (§§ 251-254), clxxvi

SYSTEMATIC PART, 1

I. Subclass PORULOSA, 6
Legion I. SPUMELLARIA vel PERIPYLEA, 6
Order 1. Colloidea, 10
" 2. Beloidea, 28
" 3. Sphæroidea, 50
" 4. Prunoidea, 284
" 5. Discoidea, 402
" 6. Larcoidea, 599

Legion II. ACANTHARIA vel ACTIPYLEA, 716
Order 7. Actinelida, 728
" 8. Acanthonida, 740
" 9. Sphærophracta, 795
" 10. Prunophracta, 859

SECOND PART.

II. Subclass OSCULOSA, 889
Legion III. NASSELLARIA vel MONOPYLEA, 889
Order 11. Nassoidea, 895
" 12. Plectoidea, 898
" 13. Stephoidea, 931
" 14. Spyroidea, 1015
" 15. Botryodea, 1103
" 16. Cyrtoidea, 1126

Legion IV. PHÆODARIA vel CANNOPYLEA, 1521
Order 17. Phæocystina, 1542
" 18. Phæosphæria, 1590
" 19. Phæogromia, 1642
" 20. Phæoconchia, 1710

Note on the Dimensions and Measurements, 1760

ADDENDA, 1761

ERRATA, 1763

INDEX, 1765

GENERAL INTRODUCTION.

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ANATOMICAL SECTION.

A SKETCH OF OUR KNOWLEDGE OF THE ORGANISATION OF THE RADIOLARIA IN THE YEAR 1884.

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