KAMILY LYMNA;1D^ 83 



Section Bathyomphalus Agassiz. 



Bathyomphalits Agassiz, in Charpentier, Fauna Helv. , p. 20, 1 837 ; P. contortiis 

 Drap. — Hartmann, Syst. Uebers. Gast., table, 1840. — VVesterluno 

 Acta Acad. Sci. Slav. Merid., Zagrabia;, CLi, p. 120, 1902. 



Polygynis Gr.^y, P. Z. S., 1847, p. 181 ; /•". contorhts Miiller ; not of Beck, 

 1837, nor Polygyra Say, 1818. 



Balkyomphalus Qkw, in Turton, Man., 2(1 ed., p. 244, 1857. 



Diuoidina Stein, Schn. 11. Muscheln licrlins, p. 82, 1850 ; P. contortus 

 Muller. 



Suljgcmis Gyraulus Agassiz. 



Gyraiiltis Miks%\7., in Charpentier, Fauna Helvetica, p. 21, 1837; ist sp. P. 



hispiiius Drap. (= <;/^/« Miiller). — Hakt.m.wn, Syst. Uebers., table, 



1840; Cast., V, pp. 89, 95, 1844. — MOQUIN T.\Nl)ON, Hist. Moll. Terr. 



et Fluv., II, p. 438, 1855. 

 Plana) iii Brown, 111. Conch. Gt. Brit., e.\pl. pi. 51, figs. 48, 49^, 1827; 



not Planaria Miiller, 1776. 

 Trochlea HaldEiMAN, Am. Journ. Sci., xlu, p. 216, 1841. 

 Giraitlus Moquin T.\ndon, Hist. Moll. Terr, et Fluv. de France, 11, p. 423, 



1855. 

 Aautiliita (pars) Stein, Schn. u. Muscheln Berhns, p. 80, 1850. 

 Gy rulii s Gkaw , in Turton, Man., 2ded., p. 234, 1857, in syn. 

 Gyraulus Gray, op. cit., p. 234, 1857, P. albus Miiller. — Westerlund, 



Acta Acad. Sci. Slav. Merid., Zagrabice, cli, p. 121, 1902. 



Section Armigp:r Hartmann. 



^;-w/^cr Hartmann, Syst. Uebers., table, 1840; Gast., v, p. 172, 1842 ; /'. 



crista (L.). — Westerlund, Acta Acad. Sci. Slav. Merid., CLi, p. 121, 



1902. 

 Nautilina (sp.) Stein, Schn. u. Muscheln Berlins, p. 81, 1850. 



Section Torqitis Dall, nov. 



Type P. parvus Say. 



{Iitccrte scdis.) 



? Section IIetkrodiscus Westerlund. 



Heterodiscus Westerlund, Rad. Jugoslav. Akad. (Acta Acad. Sci. Slav. 

 Merid.), CLl, p. 120, Zoiil. Rec, XL, 1903, Moll., p. 63. Type Planorlns 

 libanicus \\'tsiQr\\ini\. Hoi Heierodiscus S)\a.r\t, Insecta, 1886. 



? = Planorbina Haldeman, 1842, q. v. 



The genus Pla?torbis is frequently ascribed to Guettard or Geoff roy, 

 neither of whom accepted (in the papers where this name appears) tiie 

 Linnean nomenclature. If we are to cite non-Linnean authors we 

 must go back mucli further, for Petiver used the name in 1702 for a 

 species which Linne afterward named Helix spirorbis. Another 

 non-Linnean name is Corctus of Adanson, which he applied to a 

 minute species an eighth of an inch in greatest diameter. Gray in 

 1S47, by some error cites Planorbis corneus as Adanson's tj-pe, which 



