I 89 I. J BAKER SHELLS FROM THE MAURITIUS. 21 



Family LIMACID^. 



13. Ariophanta (Coelatura) scalpta, Martens. 



14. " (Rotula) argenta, Reeve. 



15. " " semicerina, Morelet. 



■ 16. " " implicata, Nevill. An unfigured 



species said to be quite rare. 



17. Ariophanta (Pachystyla) inversicolor, Fer. Verj^ 

 common. 



18. Ariophanta (Pachystyla) mauritiana, Pfr. {=ki/cosfyla, 

 Pfr., which is the adult form, mauritiana having been described from 

 a juvenile specimen.) Very common, associated with the preceding. 



19. Ariophanta (Caldwellia) philyrina, Morelet. Rare. 



It is rather unfortunate that the old and well-known name 

 Nanina should have been changed to Ariophanta. Nanina, Gray, 

 however, was described in 1S34, while Ariophanta, des Moulins, was 

 described in 1S29, thus making the change necessary. 



Family AURICULIDi^. 



20. Melampus sp. An abundant form which I have not been 

 able to identify. It has much the appearance of Melampas cylinaroi- 

 des, Mousson, from the Marquesas, but is not as elongate and has a 

 much shorter aperture than that species. 



Order OPISTHOBRANCHIATA. 



Family APLUSTRID^e. 



21. Aplustrum aplustre, Linn. 



22. " (Hydatina) physis, Linn. 



23. " (BuUina) scabra, Chemn. All very common. 

 Aplustrum physis is also found in the West Indies. 



Family BULLION. 



24. Accra soluta, Chemn. 



25. Volvatella Cumingii,? A. Adams. Found sparingly. 



