vi : CONTENTS. 
CHAPTER XII. 
PAGE 
ACEPHALA : a . - 354 
Asiphonida . . ‘i - 354 
Mussel Fisheries . . + 356 
Pearl Oyster Fisheries . . 366 
Oyster Fisheries and Parks. 385 
CHAPTER XIII. 
BRACHIOPODA . 3 3 . 407 
CHAPTER XIV. 
CEPHALA . + 409 
Three classes of Cephala » 409 
¥, GASTEROPODA 409 
Order 1, Nucleo- branchiata. 410 
», 2. Opistho-branchiata 410 
CHAPTER XV. 
Order 3. Pulmonifera . - 414 
CHAPTER XVI. 
Order 4. Prosobranchiata . 428 
CHAPTER XVIL 
11, PTEROPODS : - . 466 
CHAPTER XVIII. 
11, CEPHALOPODA . 
Order 1. Tetrabranchiata 
»» 2. Dibranchiata 
Distribution of Mollusca 
CHAPTER XIX. 
CRUSTACEA 
Orders of Crustacea 
CHAPTER XxX. 
FISHES . . 
Leptocardia 
Cyclostomata 
Selachia 
Ganoidea . 
CHAPTER XXI. 
TELEOSTEA, OR BONY FISHES 
Plectognatha 
Lophobranchia 
Pharyngognatha . 
Physostomata 
Anacanthina 
Acanthopterygea 
