RISSOIDiE. 51 



22. Hydrobia (Bythinella) viridis. 



BiiHinus vii'idis, Poiret, Prod. Moll. Aisne, ISOl. 



9 France ; coll. A. Mallierbe, Esq. [A. S. R] 

 2 Grasse ; ex " Liunsea." 



23. Hydrobia (Bythinella) elachista. 



Hydrobia elacliist:i, Bourguignat, Rev. Mag. Zool. 1S62, p. 112 — long 3, 

 diam. 2 mil. — Constantine ; sect. Fraiienfeldia,Jide Kobelt. 



7 Constantiue ; ex c. P. Joly, Esq. 



24. Hydrobia (Bythinella) n. sp. 



2 Cberagas, Algeria j coll. P. Joly, Esq. 



25. Hydrobia (Bythinella) n. sp. [?] 



Couf. Paliuliua minutissima, Schmidt, Conch.- Cab. II, pi. 13, Jig. 26—27, 

 " Krain." 



1 Marees de la Macte, Oraii ; coll. P. Joly, Esq. [long. If m.] 



26. Hydrobia (Bythinella) carinulata. 



Hydi'obia carinulata, Drouet, Moll. Cote d' Or, 1867, Dijon. 

 30 Dijon ; coll. G. Nevill, Esq. 



27. Hydrobia (Bythinella) rubiginosa. 



Paludina rubiginosa, Boulee, Bull. Hist. Nat. 1833, St. O irons (Ariige) ; 

 Jide Moquin-Tandon = Sydr. viridis, Poiret, var. [_not Palad.], 



30 Ari^ge ; ex c. P. Joly, Esq. 



28. Hydrobia (Bythinella) abbreviata. 



Paludina abbreviata, Michaud, Compl. Drap. 1831, Lyons. 

 20 S. Saulge (Dep. Nievre) ; coll. P. Breviere, Esq. 



29. Hydrobia (Bythinella) reyniesi. 



Ilydrobia Reyniesi, Duptty, Hist. Moll. Fr, 1851, Cauterets, ^c; Jtde Fischer 

 = Hydrobia canaliculata, Palad. 1869, " pres Cierp ;" sect, Fraueiifeldia, 

 fide Kobelt. 



7 Cauterets ; coll. G. Nevill, Esq. 



