189I.] BAKER — SHELLS FROM THE iMAURITIUS. 35 



Family AVICULIDiE. 



223. Avicula (Meleagrina) margaritifera, Linn. 



A number of fine, handsome specimens were in this collection. 



224. Avicula (Meleagrina) Martensi, Dkr. 

 A very common form. 



225. Vulsella (Madrela) spongiarum, Lam. 



A number of this form were contained in the collection imbedded 

 in a sponge. 



226. Perna ephippium, Linn. Judging from the scarcity of 

 this species in collections from the Mauritius, this form must be quite 

 rare at that locality. 



Family MYTILIDiE. 



227. Modiola sp. A small form which I was not able to satis- 

 factorily identify. 



Family ARCIDiE. 



228. Area revelata, Desh. 



229. " (Barbartia) velata, Sowb. 



Neither of the above forms seem to be at all common, judging 

 from the number received. 



Family CARDIID^E. 



230. Cardium (Trachycardium) mauritianum, Desh. 



231. " " bicolor, Sowb. 



232. " " sp. 



233. " (Papyridea) papyracea, Chemn. 

 All the above more or less common. 



Family CYPRINIDiE. 



234. Libitina gumaica, Lam. 



235. " angulata, Lam. Not common. 



