54 RISSOID^. 



vav. cyelolabris. 



Paludinella cyelolabris, Sossmdssler ms., v. Frauenfeld, Ver. zooL-lot. Oea. 

 Wien, 1863. 



2 Hall, Tyrol ; ex c. C. P. Aiicey, Esq. 



43. Hydrobia (Bythinella) charpentieri. 



Amnicola Charpentieri, Soth, MalaJc. Bl. II, 1856, Attica — long, 3\, tliam. 

 3\ mil. 



2 " Parn^s," France [?] ; ex " Linnsea." 



44. Hydrobia (Bythinella) opaca. 



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

 Wien, XXII, 1862. 



2 Carniola [Austria] ; ex " Linnsea." 



45. Hydrobia (Bythinella) lata. 



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

 Hungary. 



2 Kascbau [Hungary] ; ex " Linnasa." 



46. Hydrobia (Bythinella) parvula. 



Paludina par\'ula, Sutton, J. Asiat. Soc. Bengal, 1849, KojucTc Pass, 

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

 istan, also Ahmed nu g g er ; prohahlg = Bythinia globula. Lea, 1856, 

 " India and tanks at Calcutta" [/] 

 I have not seen any species of tlie genus from Afghanistan 



or the North- West Frontier. 



The species is not represented in the Museum. 



47. Hydrobia (Bythinella) gibba. 



Cyclostoma gibbuin, Braparnaud, Hist. Moll. France, 1805 [^sine Hab.'] ; 

 sect. Belgrandia. 



3 South France ; ex " Linnsea." 



48. Hydrobia (Bythinella) californiea. 



Hydrobia Californiea, Tryon, Amer. Journ. Conch. I, 1865, OaJcland, ^c. 

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



49. Hydrobia (Bythinella) dolichia. 



Hydrobia dolichia, Bourguignat, Malac. Alg. 1864, p. S36 — long. 2? to 2|, 

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



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



