FAMILY UNIONID^ I3I 



Genus Anodontoides Simpson. 

 Anodontoides ferussacianus Lea. 



Anodonta ferussaciana Lea, Trans. Am. Phil. Soc, v, p. 45, pi. vi, fig. 15, 



1834. 

 Anodonta buchanensis Lea, op. cit., p. 47, pi. xiv, fig. 43, 1838. 

 Anodonta argentea Lea, op. cit., viii, p. 223, pi. xix, fig. 41, 1842. 

 Anodonta ferruginea Lea, op. cit., viii, p. 225, pi. xix, fig. 43, 1842. 

 Anodonta plicata Haldeman, Journ. Acad. Nat. Sci. Phila., viii, p. 201, 1842. 

 Anodonta denigrata Lea, Trans. Am. Phil. Soc, x, p. 285, pi. xxv, fig. 45, 



1852. 

 Anodonta oblita Lea, op. cit., p. 46, pi. xxviii, fig. 52, 1852. 

 Anodonta subcylindracea Lea, op. cit., vi, p. 106, pi. xxiv, fig. 117, 1838. 

 Anodonta modesta Lea, Journ. Acad. Nat. Sci. Phila., n. s., iv, p. 364, pi. 



LXiii, fig. 189, i860. 



Range. — Mississippi drainage, St. Lawrence, Red River of the 

 North, and Saskatchewan basins. 



Lake Winnipeg ! Lake of the Woods ! 



Genus Symphynota Lea. 

 Subgenus Lasmigona Rafinesque. 

 Symphynota costata Rafinesque. 



Alasmidonta costata Rafinesque, Ann. Gen. Sci, Brux., v, p. 318, pi. LXXXli, 



figs. 15, 16, 1820. 

 Alasmodonta rugosa Barnes, Am. Journ. Sci., vi, p. 278, pi. xili, fig. 21, 



1823. 



Range, — Mississippi and St. Lawrence basins. 

 Manitoba in Roseau River ! 



Subgenus Pterosygna Rafinesque. 

 Symphynota complanata Barnes. 



Alasmodonta complanata Barnes, Am. Journ. Sci., vi, p. 278, pi. xiii, fig. 



22, 1823. — Baker, Moll. Chicago Area, i, p. 60, pi. viii, figs. 1-2, pL 



IX, figs. 1-4, 1898. 

 Complanaria gigas Sowerby, Conch. Manual, fig. 141, 1839 ; 2d ed., p. 



115, fig. 141, 1842. 

 Unio katherincB Lea, Synopsis, p. 35, 1838; Trans. Am. Phil. Soc, vi, p. 



143, 1839. Lake Superior. 



Range. — Mississippi drainage north of Arkansas on the west and 

 Tennessee on the east; Upper St. Lawrence and its tributaries. The 

 variety katherince northward from Lake Superior to the Mackenzie 

 and Keewatin. 



Lake Winnipeg ! Shell River and Lower Saskatchewan ! Nelson 

 River drainage ; Assiniboine River ; Red River of the North ! Battle 

 River, Manitoba, 



