64 RISSOIDJE. 



var. cyclolabris. 



Paludinella cyclolabris^ Bossmassler ms., v. Frmienfeld, Ver. zool.-hot. Ge3. 

 Wien, 1863. 



2 Hall, Tyrol ; ex c. C. F. Ancey, Esq. 



43. Hydrobia (Bytbinella) charpentieri. 



Anmicola Charpentieri, Both, MaJa/c. Bl. II, 1856, Attica — long, 3\, diam. 

 3\ mil. 



2 " Parn^s/' France [?] j ex " Linnsea." 



44. Hydrobia (Bythinella) opaca. 



Paludinella opaca, Ziegler ms., von Frauenfeld, Sitz. K. Alcad. Wissens. 

 Wien, XXII, 1862. 



2 Carniola [Austria] ; ex " Linnsea." 



45. Hydrobia (Bythinella) lata. 



Paludinella lata, von Frauenfeld, Ver. K. zool.-hot. Ges. Wien, 1863, 

 Hungary. 



2 Kascliau [Hungary] ; ex " Linnoea." 



46. Hydrobia (Bythinella) parvula. 



Paludina par^oila, Sutton, J. Asiat. Soc. Bengal, 1849, KojucTc Pass, 

 Chummun — anfr. 4, long, ^th inch ; Con. Ind.pl. 151, fig. 8, Afghan- 

 istan, also Ahmednugger ; prolably = Bythinia glolida, Lea, 1856, 

 " India and tanTcs at Calcutta" [/] 

 I 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, Braparnaud, Hist. 3Ioll. France, 1805 \_sine Hah.'] ; 

 sect. Belgrandia. 



3 Soutli France ; ex " Linnsea." 



48. Hydrobia (Bythinella) californica. 



Hydrobia Californica, Tryon, Amer. Journ. Conch. I, 1865, OaJcland, Sfc. 

 15 Oakland, California ; coll. Prof. W. Newcomb. 



49. Hydrobia (Bythinella) dolichia. 



Hydrobia dolichia, Bourguignat, Ilalac. Jig. 1864, p. 236— long, 2k to 2f, 

 diam. 1 mil. — GeryviUe and Boghar ; sect. Maresia. 



5 Edough [Bone] j ex c. P. Joly, Esq. 



