246 LIMNAEACEA. 



Sub.Genus SEGMENTINA, Fleming. 



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



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



43. Planortis (Segmentina) cantori, Benson. 



22 Galle and Balapiti, Ceylon ; coll. H. P. Blanf ord, Esq., and G. Nevill, Esq. 

 1 Jam^lpur ; ex c. Dr. F. Stoliczka. 



44. Planorbis (Segmentina) trochoides, Benson. 



6 Belgaumj coll. W. T. Blanf ord, Esq. 



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



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



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



46. Planorbis (Segmentina) umbilicalis, Benson. 



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

 20 Assam ; ex c. I>r. T. Oldham. 



46. Planorbis (Segmentina) ccenosus, Benson. 



1 Manthoom ; coll. V. Ball, Esq. 



47. Planorbis (Segmentina) calathus, Benson. 



15 Manbhoom; coll. V. Ball, Esq. 



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



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

 10 Assam j ex c Dr. T. Oldham. 



1 Ava ; coll. Dr. J. Anderson. 



48. Planorbis (Segmentina) nitidus, Miiiier. 



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

 15 Yirkand ; coll. Dr. F. Stoliczka. 



49. Planorbis (Segmentina), sp. 



(? P. calathus, var.) 



2 China ; ex Damon. 



60. Planorbis (Segmentina) hemispherula, Bens. 



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



Sub-Genus BATRYOMPEALUS, Agassiz. 

 [SpirorMs, Swain. =fide Carus and Gerst.) 



51. Planorbis (Batbyomphalus) contortus, Linn. 



11 England; coll. G. Nevill, Esq. 



