RISSOIDE. 51 
22. Hydrobia (Bythinella) viridis. 
Bulimus viridis, Poiret, Prod. Moll. Aisne, 1801. 
9 France ; coll. A. Malherbe, Esq. [A. 8. B.] 
2 Grasse ; ex “ Linnza.” 
23. Hydrobia (Bythinella) elachista, 
Hydrobia elachista, Bourguignat, Rev. Mag. Zool. 1862, p. 112—long. 3, 
diam. 2 mil.— Constantine ; sect. Frauenfeldia, fide Kobelt. 
7 Constantine ; ex c. P. Joly, Esq. 
24. Hydrobia (Bythinella) n. sp. 
2 Cheragas, Algeria ; coll. P. Joly, Esq. 
25. Hydrobia (Bythinella) n. sp. [?] 
Conf. Paludina minutissima, Schmidt, Conch.-Cab. IT, pl. 13, fig. 26—27, 
“ Krain.’ 
1 Marées de la Macte, Oran ; coll. P. Joly, Esq. [long. 14 m.] 
26. Hydrobia (Bythinella) carinulata. 
Hydrobia carinulata, Drouet, Moll. Céte d’ Or, 1867, Dijon. 
80 Dijon ; coll. G. Nevill, Esq. 
27. Hy drobia (Bythinella) rubiginosa. 
Paludina rubiginosa, Boubée, Bull. Hist. Nat, 1833, St. Girons (Ariége) ; 
fide Moquin-Tundon = Hydr, viridis, Potret, var. [not Palad.]. 
30 Ariége ; ex c. P. Joly, Esq. 
28. Hydrobia (Bythinella) abbreviata. 
Paludina abbreviata, Michaud, Compl. Drap, 1831, Lyons. 
20 S. Saulge (Dep. Niévre) ; coll. P. Bréviére, Esq. 
29. Hydrobia (Bythinella) reyniesi. 
Hydrobia Reyniesi, Dupuy, Hist. Moll. Fr. 1851, Cauterets, $e.; fide Fischer 
_= Hydrobia canaliculata, Palad. 1869, “ prés Cierp ;? sect. Frauenfeldia, 
fide Kobelt. 
7 Cauterets; coll. G. Nevill, Esq. 
