FAMILY LYMN^ID^E 6l 



> Polyrhytis Meek, Rep. Inv. Fos. Upper Missouri, p. 532, 1876 ; type 



Limncea kingi Meek (Pliocene). 



> Omphiscola Meek, Rep. Inv. Fos. Upper Missouri, p. 533, 1876; type 



Limncea glabra (Muller) ; not of Rarinesque. 

 Omph.ilia "Raf.," Meek, op. cit., p. 532, in syn. ; err. pro Omphiscola 



Rarinesque. 

 ? Erinna H. and A. Adams, Gen. Rec. Moll., II, p. 644, 1858; type E. 



newcombi Adams. 



> Neritostoma H. and A. Adams, Gen. Rec. Moll., 11, p. 253, 1855, 1st sp. 



L. aiiricularia (Linne). Not of Morch, 1864. 

 ? Velulinopsis Sandberger, Land u. siissw. Conch, d. Vonvelt, p. 700, 1875, 



type Limnwa velutina Desh. (Lower Pliocene). 

 ;> Leptolimncens Sandberger, Land u. siissw. Conch, d. Vorwelt, p. 787, 



1875 ; sole ex. cited L. glaber (Muller). 

 Eulimneus Sandberger, Land u. siissw. Conch, d. Vorwelt, pp. 787, 844, 



1875 ; sole ex. cited L. stagnalis (L). 



> Fossaria Westerlund, Fauna, Pal. Reg., V, p. 49, 1885 ; L. truncatula 



(Muller) ; Acta Soc. Sci. Slav. Merid., cli, p. 118, 1902. 



> Tanousia Bourguignat, in Servain, Hist. Mai. du Lac Balaton, 1881. 1 



Type L. zrmanjce Brusina ; Westerlund, op. cit., p. 53, 1885, p. 118, 

 1902. 



> Lymnophysa (Fitzinger) Hazay, Mai. Blatt., 2d ser., in, p. 163, 1881. 



> Limnus Dybowski, Bull. Imp. Acad. Sci. St. Petersburg, xvin, p. 113, 



March, 1903, not of Agassiz, nom., 1847. 



> nip halo li?nmis Dybowski, Nachrichtsbl. d. d. Mai. Ges., Sept. -Oct., 



1903, xxxv, p. 143, 1903. Type L. lagorii Dybowski ; Bull. Acad. St. 

 Petersb., xvin, p. 113, 1903. 



> Physastra Tapparone Canefri, Ann. Mus. Genov., xix, p. 245, 1883. 



Type P. vestita T.-C, op. cit., p. 246. New Guinea. 



> Zagrabica Brusina, Beitr. Pal. Oest.-Ung., 1884, Z. naticoides Brus. — 



Westerlund, Acta Acad. Sci. Slav. Merid., cli., p. 119, 1902. 

 Not Limncea Poli, Test. Utr. Sicil., I, p. 31, 1791, II, p. 253, 1795 (not 

 binomial). 



The genus Lymncea as now understood is due to Lamarck, though 

 several authors, including Westerlund as late as 1S85, have given 

 credit for it to Bruguiere. This has probably arisen from a failure to 

 observe the dates of the different livraisons which contained the plates 

 of the Encyclopedic Methodique. The plate containing the name 

 Lymncea was not issued until 1S16 (though often cited as 1791 ), and 

 then it was under the supervision of Lamarck, Bruguiere having 

 nothing to do with it. The name Lymncea had already been used 

 by Poli, in 1791 , for the animal of various unrelated bivalves, but 

 his ingenious quadrinominal system takes the work of Poli out of 

 the category of those which can be cited in nomenclature, except 

 historically. 



1 The multitude of group names used for mutations of Lymna>a stagnalis and 

 other species by Servain in his ' Lake Balaton ' paper, can hardly be regarded as 

 having entered into systematic nomenclature, as they are groups of less value 

 than species, and physiological rather than hereditary, according to Hazay. 



