369 



LIST OF MOLLUSCA FROM CHRISTMAS ISLAND, INDIAN OCEAN. 



By E. A. Smith, I.S.O. 



Read lUh May, 1909. 



(Published by permission of the Trustees of the British Museum.) 



The few species here enumerated were collected by Dr. C. W. Andrews, 

 and have been presented to the British Museum by !Sir John Murray, 

 K.C.B. Three appear to be new to science. 



1. List of Species. 



1. Glyphis Shigaporeiuis (Rve.). 19. 



2. Haliotis, sp. juv. 20. 



3. Plesiotrochus Fischeri, u.sp. 



4. Truowatella valida, Pfr. 21. 



5. Anialthea ausfralis (Larak.). 22. 



6. Mitrularia diaphana (Rve.). 23. 



7. Cypreea poraria , Liun. 24. 



8. Cerithium zebra, var. 25. 



9. Triphora triticea, Pease. 26. 



10. Planaxis loiigispira. Smith. 27. 



11. Feristernia nassatnla (Laxak.), 28. 



12. Mitra, sp. juv. 29. 



13. M. retusa, Lamk. 30. 



14. Tritonidea U7idosa (Linu.). 31. 



15. Nassa 2}apiHosa (Linn.). 32. 



16. GolumheUa varians, var. 33. 



17. Sistrum Andreivsi, n.sp. 34. 



18. S. morus (Lamk.). 



2. Description op the New Species. 

 Sistrum Andrewsi, n.sp. 



Testa fusiformi-ovata, rimata, pallide violacea, spinosa ; anf ractus 



circiter 8, oblique planiusculi, longitudinal iter costati et spiraliter 

 lirati, liris supra costas spinosis ; anfr. ultimus seriebus spinarum 



Coralliophila neritoidea, jun. 

 Conns hebrceits, Linn , and var. 



vcrmicnlatiis , Lamk. 

 Smaragdinella viridis (Rang). 

 Siplionaria ferrugwea, Rve. 

 Area mactilata, Sowb. 

 Septifer bilociilaris (Linn.). 

 »S'. excisus (Wieg-m.). 

 Libitina oblonga (Linn.). 

 Tr'idacna, sp. juv. 

 Teredo sp. 

 Xylotrya sp. 



)) »> 



Octopus gruimlalus. Lam. (?). 

 Ennea {Huttonella) bicolor (Hutton). 

 Kaliella cruda, n.sp. 

 Opeas subula, Pfr. 



w 



4-5 cseteris magis conspicuis ornatus, circa rimam porca squamosa 

 rubicunda instructus ; apertura angusta, antice contractu, canalioulata, 

 saturate roseo - purpurea ; labrum intus iiierassatum, tuberculis 

 4-5 armatum ; columella callo roseo - purpuieo indiita, in medio 



