54 RISSOIDE. 
var. cyclolabris. 
Paludinella cyclolabris, Rossmdssler ms., v. Frauenfeld, Ver, zool.-bot. Ges. 
Wien, 1863. 
2 Hall, Tyrol; exc. C. F. Ancey, Esq. 
43. Hydrobia (Bythinella) charpentieri. 
Amnicola Charpentieri, Roth, Malak. Bl. II, 1856, Attica—long. 33, diam. 
3 mil, 
2 “Parnés,” France [?] ; ex “ Linnea.” 
44. Hydrobia (Bythinella) opaca. 
Paludinella opaca, Ziegler ms., von Frauenfeld, Sitz. K. Akad. Wissens. 
Wien, XXII, 1862. 
2 Carniola [Austria] ; ex “ Linnea.” 
45. Hydrobia (Bythinella) lata. 
Paludinella lata, von Frauenfeld, Ver. K. zool.-bot. Ges. Wien, 1863, 
Hungary. 
2 Kaschau [Hungary]; ex “ Linnaa.” 
46. Hydrobia (Bythinella) parvula. 
Paludina parvula, Hutton, J. Asiat. Soe. Bengal, 1849, Kojuck Pass, 
Chummun—anfr. 4, long. 23th inch ; Con. Ind. pl. 151, fig. 8, Afghan- 
istan, also Ahmednugger; probably=Bythinia globula, Lea, 1856, 
« India and tanks at Calcutta’ [?] 
T have not seen any species of the genus from Afghanistan 
or the North-West Frontier. 
The species is not represented in the Museum. 
47. Hydrobia (Bythinella) gibba. 
Cyclostoma gibbum, Draparnaud, Hist. Moll. France, 1805 [sine Hab.] ; 
sect. Belgrandia. 
3 South France; ex “ Linnea.” 
48. Hydrobia (Bythinella) californica. 
Hydrobia Californica, Tryon, Amer. Journ. Conch. I, 1865, Oakland, ge. 
15 Oakland, California; coll. Prof. W. Newcomb. 
49. Hydrobia (Bythinella) dolichia. 
Hydrobia dolichia, Bourguignat, Malac, Alg. 1864, p. 236—long. 24 to 23, 
diam. 1 mil.—Géryville and Boghar ; sect. Maresia, 
5 Edough [Béne]; ex c. P. Joly, Esq. 
