HELICOXE. 161 



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



folliculus, Gron.) 

 [ = Cionella, Jeffr., in Mart. ed. Albers, &c.] 



l. Ferussacia folliculus, Gron. 



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



4 Pompeii ; coll. G. Nevill, Esq. 



2- Ferussacia, S p. 



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



3- Ferussacia hierosolymarum, Roth. 



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 " Glandina 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. tomatellina, Lowe). 



5. Ferussacia (Lovea) tornatellina, Lowe. 



30 Madeira; ex c. Dr. F. Stoliczka. 



6. Ferussacia (Lovea) melampoidies, Lowe. 



1 Madeira ; ex c. Evenor Dupont, Esq. - 



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

 (Cionella, Jeffr., pars.) 



7. Ferussacia (Zua) lubrica, Miiller. 



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



ex c. As. Soc., Bengal. 

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



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



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

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



