FAMILY LYMN-«ID^ 8 1 



Orbis ScHROTER, Joum. Steinr. u. Konch., iii, p. lo, 1776, an error of cita- 

 tion for Planorbis Argenville. 



J^/^^ Anonymous in Mus. Calonn., p. 58, 1797, Helix cornea Linne. Not 

 Vortex Oken, 181 5. 



< Anisus Studer, Syst. Verz., p. 23, 1820 {== Planorbis -{- Physa). 



'^ Anisus FiTZiNGER, Verz., p. iii, 1833; not of Dujardin, 1821. 



? Cornu Schumacher, Essai, p. 255, 1817, not of Born, 1778. 



^ Spiralina Hartmann, Syst. Uebers., tab. 1840. (Nude name.) No type 

 cited. 



Planorbarius Dumeril, Zool. Anal., p. 164, 1806. 



Coretus Gray (not Adanson), P. Z. S., 1847, p. 180, P. corneus L. — Mrs. 

 Gray, Figs. Moll. An., iv, p. 119, 1850. — Moquin Tandon, Moll. Terr, 

 et Fluv., II, p. 423, 1855. — Gray's Turton's Man., ed. 11, p. 233, 

 1857. 



Spirodiscus Stein, Schn. u. Muscheln Berlins, p. 73, 1850. — Morch, Vidensk. 

 Meddels. Kjobn., 1864, p. 309. — Westerlund, Acta Soc. Fauna Fen- 

 nica, XIII, No. 7, p. 112, 1897 ; Acta Acad. Sci. Slav. Merid., Zagrabiae, 

 CLI, p. 120, 1902 ; .S". corneus (Linne). 



Tropidiscus Westerlund, Fauna Pal. Reg.,v, p. 65, 1885, not of Stein; 

 Acta. Acad. Sci. Slav. Merid., Zagrabiae, CLi, p. 120, 1902; Helix plan- 

 orbis Linn6. 



f Caillaudia BouRGUiGNAT, Hist. Mai. de I'Abyssinie, p. 128, 1883; ist sp. 

 C. angulata Bourg., pl. viii, figs. 49-52, op. cit, — Westerlund, Acta 

 Acad. Sci. Slav. Merid., Zagrabiae, cli, p. 139, 1902 (a deformed or 

 monstrous form of Planorbis). 



Subgenus Planorbis s.s. 



Type Planorbis corneus Miiller. 



(Synonymy of the group given under the generic name.) 



Section Planorbina Haldeman. 



Planorbina Haldeman, Mon. Limn., Pkysadcs, p. 14, 1842, no type cited. 

 Menetus Fischer, Man., p. 509, 1883; P. guadeloupensis Sowerby ; not 



Menetus Adams, 1855. 

 Anisus Gray, P. Z. S., 1847, p. 181 ; P. olivaceus Spix ; not Anisus Studer, 



1820. 



Subgenus Helisoma Swainson. 



Helisoma Swainson, Malac, p. 337, 1840 ; P. bicarinatus Sowerby. 

 Taphius H. and A. Adams, Gen. Rec. Moll., 11, p. 262, 1855 ; P. andecolus 



Orbigny. 

 ? Anisopsis Sandberger, Land u. Siissw. Conch, d. Vorwelt, p. 958, 1875 ; P. 



loryiQoa^., and P. calculus Sandb., Jurassic. 



Section Pierosoma Dall, nov. 

 Helisoma (sp.) Auct., not of Swainson ; P. frivolvis Say. 



Section Planorbella Haldeman. 



Planorbella Haldeman, Mon. Limn., Physadce, p. 14, 1842 ; P. campanulatus 



Say. 



