CONTENTS OF VOL. II. 



Page 



Order 3. Pleurobranchiata 1 



Family 1. Bullacea id. 



2. Aplysiana 3 



3. Semiphyllidiana 6 



Order 4. Cervicobranchiata 8 



Family 1. Tubispiracea id. 



2. Macrostomata 10 



3. Capulacea 17 



4. Fissuracea 23 



Order 5. Cyclobranchiata 31 



Family 1. Patellacea 32 



2. Chitonacea 35 



Order 6. Cirrhobranchiata 40 



7. Nucleobranchiata 42 



Class 3. Pteropoda . . . • 43 



4. Lamellibranchiata 44 



Order 1. Unimusculosa 46 



Family 1. Ostracea ib. 



