40 



Natica sordida, Phil. 

 Natica catena, Da Cos. 



Natica catena, v Leckenbyi, Mar. 



Natica catena, v conico-ovalis, Je^. 

 Natica Alderi, Forb. 



Natica Alderi, v iactea, Jeff. 



Natica Alderi, v subovalis, feff. 



Natica Alderi, v ventricosa, Jeff. 

 Natica Montacuti, Forb. 



Natica Montacuti, v albula, Jeff. 



Natica Montacuti, v conica, Jeff. 



Family XXI.— SOLARIID/E, Chenu. 



Genus Adeorbis, S. Wood. 

 Adeorbis subcarinatus, Mo?it. 



Family XXII.— VELUTINID>C, Gray. 

 Genus I. — Lamellaria, Mont. 

 Lamellaria perspicua, L. 



Lamellaria perspicua, v lata, Jeff. 



Genus II. -Velutina, Fle?n. 

 Velutina plicatilis, Mail. 

 Velutina L/Evigata, Fenn. 



Velutina laevigata, v Candida, Jeff. 

 Velutina laevigata, v tenuis, Jeff. 



Family XXIII.— CANCELLARIID/E, F. and B. 



Genus Trichotropis, Broderip and Sowerby. 

 Trichotropis borealis. Brad, and So7i>. 

 Trichotropis borealis, v acuminata, Jeff. 



Family XXIV.— APORRHaId/E, Trosch. 



Genus Aporrhais, Da Cos. 

 Aporrhais pes-pelicani, L. 



Aporrhais pes-pelicani, v albida, Jeff. 

 Aporrhais Macandre^, Jeff. 



