328 UNIONIDiE 



1890. Pisidium prolongatuni, Clessiu : Clessin, o. c, p. 785, 

 f. 519. [= prolongatum of 1880 not of 1877.] 



1890. Pisidium Charpentieri, m. : Clessin, o. c, p. 787, f. 521. 



1899. Pisidium dessini, n. sp. [pars] : Surbeck, Rev. Suisse 

 Zool, vi, p. 482, p]. xii, f. 6-15. 



1907. Pisidium miliolum, n. sp. : Clessin, Nachrbl. Deutsch. 



Malak, Gesell., xxxix, p. 8. 



1908. Pisidium tornense, n. sp. : Odhner, Naturw. JJntersuch. 



Sarekgebirges, iv, p. 154, pi. iii, f. 9-13. 



Fam. : UNIONID^.i 



Genus : 1. ANODONTA, Lamarck. 



Etyni. :- — Gr. dv- + oSovs, witliout teeth. 

 Type : — Myfilus cygneus, Linnajus. 

 {Mytilus, vett. auctt.) 



1792. Anodontites [pars] : Bruguiere, Journ. Hist. Nat., i, 

 p. 134. 



1798. Anodontites : Cuvier, Tahl. Element, p. 424. 



1798 1 



o ' - Musculus [pars] : Bolten, Mus. Bolt., ii, p. 156. 



1799. Anodonta : Lamarck, Mem. Soc. Hist. Nat. Paris, i, 



p. 87. 

 *1810. Cista : Huebner, Epist., i. [Teste Menke, Zeitschr. f. 

 Malak., v, 1848, p. 56.] 



1815. Anodon : Oken, Lehrb. Nalurg., iii, Zool. abth. 1, 



p. 238. 



1816. Anodontes, Brug. : Cuvier, Regne Anitn., ii, 1817 [i.e. 



Dec. 1816], p. 472. [Non Bruguiere.] 



1828. Anadonta, Brug. : Kleeberg, Moll. Bontss. Syn., p. 8. 



[Non Bruguiere.] 



1829. Symphynota : Lea, Trans. Amer. Phil. Soc, iii, p. 442. 

 1836. Margarita [pars] : Lea, Synop. Fam. Naiad., ed. 1, p. 48. 

 1852. Margoran [pars] : Lea, o. c, ed. 3, p. 47. 



[No attempt has been made to identify with British all 

 the innumerable so-called species of Anodonta 

 founded by continental writers on uncertain external 

 characters ; only such as could be satisfactorily 

 identified are included.] 



1. Anodonta cygnea (Linne). 



Etym. : — Lat. cygneus, pertaining to a swan. 



1758. Mytilus cygneus : Linn^us, Syst. Nat., ed. 10, p. 706, 

 no. 218. 



' For descrii/tion and nomenclature of the British species, See Kennaed, 

 Sawsbuby & WooDWAKD, Proc, Mahc. Soc. Load., xvi, 1925, pp. 267-85- 



