■66 Records of the Indian Musciiiii. [Vol. XXI, 



Planorbis an'ynsus nmcarinatHS Bryant Walker, loc. supra cit. 

 1918, p. 96]. 



Variete angistomus Haldeman [loc. supra cit., 1844, p. 7 : 

 et : Bryant Walker, loc. supra cit.. 1909, p. 4, pi. i, fig. 4 — 5 ; = 

 Planorbis antrosits an^istoinus Bryant Walker, loc. supra cit., 

 1918, p. 95]. 



Variete corrugatus Cukrier \List of the ■shells-bearing Mollusca 

 of Michigan, 1868, p. 8. et : Bryant Walker, loc. supra cit. 1909, 

 p. II, pi. i, tig. 10 ; = Planorbis antrosiis corrugatus Bryant Wal- 

 ker loc. supra cit., 1918, p. 95]. 



Variete aroostookensis Pilsbry [The Nautilus, VIII, 1875, p. 

 115; et : Bryant Walicer loc. supra cit., 1909, p. 7, pi. i, fig. 

 1 et 2 ;= Planorbis antrosus aroostookensis Bryant Walker, loc. 

 supra cit., 1918, p. 95] 



Variete striatus Baker [The Nautilus. XV, 1902, p. 120; et : 

 Transact. Acadcinv Sciences St. Louis, XVI, 1906, p. 9^ pi. i, fig. 

 11; et : Bryant Walker, loc. supra cit., 1909, p. 7 ; =: Planorbis 

 antrosus striatus Bryant Walker, loc. supra, cit., 1918^ p. 96]. 



Variete portagcnsis Baker [The Nautilus, XXII, 1908, p. 

 45; et : Bryant Walker, loc. suhra. cit., 1909, p. 8, pi. i, fig. 

 9 ; — Planorbis antrosus portagensis Bryant Walker, loc. supra 

 (it., 1918, p. 96]. 



Variete percarinatus Bryant Walker [loc. supra cit., 1909, 

 p. 6, pi. i^ fig. 12 =: Planorbis bicannatus variete major Bryant 

 Walker, The Nautilus, VI, 1893, p. 136 (non auct. Anieric.) = 

 Planorbis antrosus percarinatus Bryant Walker, loc. supra cit , 

 1918, p 95]. 



Variete royalensis Bryant Walker [loc. supra cit., 1909, 

 p. 9, pi. i, fig. II ; -= Planorbis antros-us royalensis Bryant Wal- 

 ker, loc. supra cit. 1918, p. 96]. 



En dehors de ces varietes bien definies, le Planorbis bicanna- 

 tus ^ay montre, comme beaucoup d'especes fluviatiles, des muta- 

 tions major, minor, etc. . . . repaiidues un peu partout. 



Sous-genre Planorbella Haldeman, 1842. 



1842. Planorbella Haldeman, A Monograph Limniades and other 



Fresh Water Shells North A mevica, IV, p. 14 [type : Planorbis 



campanulatus Say]. 

 1861. Adula H. Adams , Proceedings Zoological Society of London, p 



145 (non AdulaU. et A. Ad.\ms, 1857) [type: Planorbis miil- 



tivolvis Case]. 

 1865. Planorbella BiNNEV, Land and Fresh Water Shells North .4me- 



rica, II, p. log. 

 1869. Ancoeits H. Adams, Proceedings Zoological Society of London, p. 



275 [non Ancoeits Fauvel, 1S63]. 

 1886. Adula Clessin, Die Familie der Limnaeiden, in: Martini et 



Chemnitz, Systemat. Conchylien-Cabinet , 2^ Edit., XVII, Ntirn- 



bery, p. 33, No. 4 [type : Planorbis multivolvis Case]. 

 1886 Planorbella ClESSIN, loc. supra cit., XVII, Niirnbetg, p. 33, No. 5 



[type : Planorbis campanulatus Say]. 

 1905. Planorbella Dall, Land and Freshwater Mollusks of Alaska, 



H.arriman Alaska F.xpedition, Vol. XIII, New- York, p. 82 et 



p. 85. 



