246 LIMNAEACEA. 



Sub.Genus SEGMENTINA, Fleming. 



42. Planorbis (Segmentina) swinhoei, H. Ad. 



1 Formosa ; ex c. H. Adams, Esq. 



43. Planorbis (Segmentina) cantori, Benson. 



22 Galle and Balapiti, Ceylon ; coll. H. F. Blanford, Esq., and G.Nevill, Esq. 

 1 Jamalpm* ; ex c. Di-. F. Stoliczka. 



44. PlanorMs (Segmentina) trochoides, Benson, 



6 Belgamn; coll. W. T. Blanford, Esq. 



9 Barrackpore (typical) ; coll. Cantor, ex c. As. Soc, Bengal. 



8 Balapiti, Ceylon, and Madras ; coll. G. NeviU, Esq. 



1 Port Canning ; coll. G. Nevill, Esq. 



45. Planorbis (Segmentina) umbilicalis, Benson, 



2 Sylhct ; ex c. As. Soc, Bengal. 

 20 Assam ; ex c. Dr. T. Oldham. 



46. Planorbis (Segmentina) coenosus, Benson. 



1 Manbhoom ; coll. V. Ball, Esq. 



47. Planorbis (Segmentina) calatbus, Benson. 



15 Manbhoom; coll. V. Ball, Esq. 

 5 Moradabad (typical) ; coll. Benson, ex c. As. Soc, Bengal. 

 1 Cbandernagore ; coll. Colonel G. B. Mainwaring. 



10 Assam ; ex c. Dr. T. Oldham. 



1 Ava J coll. Dr. J. Anderson. 



48. Planorbis (Segmentina) nitidus, Misiler. 



9 England, Germany, and France ; coll. G. Nevill, Esq. 

 15 Yarkand; coll. Dr. F. Stoliczka. 



49.. Planorbis (Segmentina), sp, 



(? P. Calathus, var.) 



2 China;. ex Damon. 



50. Planorbis (Segmentina) hemispherula, Bens, 



2 Chusan (typical) ; coll. Dr. Cantor, ex Damon. 



Sub-Genus BATEYOMPHALUS, Agassiz. 

 {S^irorhis, Swain. = fide Cariis and Gerst.) 



51. Planorbis (Bathyomphalus) contortus, Linn, 



11 England ; coll. G. Nevill, Esq. 



