TABLE OF CONTENTS. 



Introduction, ...... 



I. Study of the Structure of Vaiuous Deep-Sea Mollusca. 

 i. Gastropoda, 



1. GuiviUea alabastrina, 



2. Trochus infundibulum, 



3. Trochus rhina, 



4. Turho transenna, 



5. Pleuwtoma lepta, 



6. Pleurotoma brychia, 



7. Fossarus (?) cereus, 



8. Pundurella hrychia, 

 ii. Pelecypoda, 



1. Malletia pallida, 



2. Yoldia isonota, 



3. Limopsis minuta, 



4. Limopsis pelagica, 



5. Limopsis lata, 



6. Area pteroessa, 



7. Pecten philippii, 



8. Pecten subhyalinus, 



9. Pecten mtreus, 



10. Amusium lucklum, 



11. Amusium meridionale, 



12. Myrina coppingeri, 



13. Venus mesodesma, 



14. " Cryptodon" moseleyi, 



15. " Cryptodon " luzonicus, 



16. Semele pwfundorum, 



17. Semele lonyicallus, . 



18. Lyonsiella jeffreysi, . 



1 9. Lyonsiella papyracea, 



(ZOOL. CHALL. EXP. — PART LXXIV. — 1888.) 



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