MBLVILL — MAEINE MOLLUSCA. 105 



220. Sistrum nndatum CChemn.). 



Loc. Seychelles : Station F 2, 31 fathoms, coral, shell, and lAthothamnia rubble. 



Chagos Archipelago. 

 Most of the above-mentioned Sistrn are of wide distribution in the Indo-Paciflc 



Family Coralliophilidae. 



221. Coralliophila abnormis (Sm.). 



Fusus abnormis, E. A. Smith, Proc. Zool. Soc. Loud. 1878, p. 811, fig. 



Rkizochilus abnormis (Sm.), Melvill & Sykes, Proc. Mai. Soc. Lond. vol. ii. (1897) p. 170. 



Loc. Seychelles : Station P 3, 39 fathoms, hard sand bottom. 



222. Coralliophila neritoidea (Lam.). 

 Loc. Coetivy I. 



Seychelles : Praslin I. 

 Chagos Archipelago. 

 C. violacea, Kiener, is synonymic. 



223. Coralliophila monodonta (Quoy). 

 Loc. Coetivy I 



Saya de Malha Banks : Station C 16, 26 fathoms. 

 Chagos Archipelago : Salomon and Diego Garcia. 

 With this we group C. madreporarum, Sowb., the forms appearing to iutergrade. 



224. Leptoconchus strialns, Riipp. 

 Loc. Seychelles : Praslin I. 



Family ColumbellidaB. 



225. Columhella poecila, Sowb. 

 Loc. Coetivy I. 



226. Columhella tnrturina. Lam. 

 Loc. Coetivy I. 



Ciuigos Archipelago. 



227. Columhella varians, Sowb. 

 Loc. Amirantes : S. Joseph I. 



In poor, broken condition, but most probably referable here. 



228. Columhella versicolor, Sowb. 

 Loc. Coetivy I. 



SECOND SERIES. — ZOOLOGY, VOL. XIII. 14 



