HELICIDJ;. 161 



Genus FERUSSACIA, Eisso. emend. Bourg. (type F. 

 folliculus, Gron.) 

 [ = Gionella, Jeffr., in Mart. ed. Albers, &c.J 



1. Ferussacia folliculus, Gron. 



1 Oran ; ex c. As. Soc, Bengal, coll. M. Malherbe. 



4 Pompeii ; coll. G. Nevill, Esq. 



2- Ferussacia, sp. 



1 Oran ; ex c. As. Soc, Bengal, coll. M. Malherbe. 



3- Ferussacia hierosolymarum, Rotii. 



5 Syria ; ex c. H. F. Blanford, Esq. 



4. Ferussacia barclayi, Benson. 



16 Mt. Oriz and Moka, Mauritius. — Only distinguished from its European 

 close ally, A. folliculus, by the more tumid last whorl and broader 

 aperture. It lives gregariously under large blocks of stone ; the 

 animal is bright-yellow and very active. A single one of the living 

 specimens which I found was reversed. Has the European form been 

 found sinistral ? The anatomy of one of these specimens is described 

 by Semper, (Heft III Philipp. Moll., p. 135,) as a shell sent by me 

 labelled " Qlcmdina vesiculata, Bens." ; this was the name under 

 which the] form was known at Mauritius, and used by me before I 

 had access to any conchological works. 



Sub-Genus LOVE A, Watson (type F. tonatellina, Lowe). 



6. Ferussacia (Lovea) tornatellina, Lowe. 



80 Madeira; ex c. Dr. P. Stoliczka. 



6. Ferussacia (Lovea) melampoides, Lowe. 



1 Madeira; ex o. Evenor Dupont, Esq. 



Sub-Genus ZUA, Leach (type F. lubrlca, Miiller). 

 (Gionella, Jeffir., pars.) 



7. Ferussacia (Zua) lul)rica, Miiller. 



20 Bonn, PlueUen, Grenoble, and England; coll. G. Nevill, Esq., and 



ex c. As. Soc, Bengal. 

 30 New York ; ex c. Prof. W. Newcomb and Kev. E. R. Beadle. 



2 Pyrmont ; ex c. Dr. F. Stoliczka. 



var. (? F. puhhella, Hartm.). 

 40 Mazandarto; coll. W, T. Blanford, Esq. 



