50 RISSOID^, 



16. Hydrobia (Bythinella) lanceolata. 



Hydrobia lauceolata, PaladWhe, Bev. mid Mag. ZooL 1869, St. Jean de Lttz. 

 30 Bayomie ; coll. Gr. Nevill, Esq. 



17. Hydrobia (Bythinella), sp. 



8 Alsace ; ex c. P. Joly, Esq. 



var. (?). 

 3 Alsace ; ex c. P. Joly, Esq. 



18. Hydrobia (Bythinella) ligurica. 



Hydrobia Ligui'ica, laladilhe, Mev. Mag, Zool. XIX, 1867, Finale [iV. 

 Halt/']. 



1 Alassio ; coll. G. Nevill, Esq, 



19. Hydrobia (Bythinella) saxatilis. 



Hydrobia saxatilis, Reynies, ms., Bupuy, Moll. Fr. 1851, 'p. 561, Monfauhan ; 

 fide Paladilhe, of" Lettre a M. Moquin-Tandon, 1843, pi. I, fig. 3. 



6 Cantal j coll. P. Breviere, Esq. 



var. [ ? dist. sp.] 



7 Bayonne ; coll. G. Nevill and Marquis de Folin. 



Has a smaller aperture, more produced spire, and less obtuse 

 apex than tlie preceding. Dr. Kobelt consiclers it a species of 

 the section Frauenjeldia. 



20. Hydrobia (Bythinella) uzielliana. 



Bytbinia Uzielliana, Issel, Moll. Miss. Persia, 1865, p. 19 — long. 2\, diam, 

 1\ mil. — hot-water springs at Kerman. 



100 Asupas, Sabestan and Karman (Persia) ; coll. W. T. Blanford, Esq. 



21. Hydrobia (Bythinella) peracuta. 



Hydrobia peracuta, Paladilhe, Rev. Mag. Zool, 1869, " Lyon" and " Nyons " 

 \_Switzerland'] — long. 3, diam. if mil. 



3 Alsace ; ex c. P. Joly, Esq. 



var. [? dist. sp.] 

 3 Alsace ; ex c. P. Joly, Esq. 



