FAMILY UNIONID^E 127 



Lampsilis (Propterd) alatus SIMPSON, Synopsis, p. 567, 1900. 



Range. Entire drainage of the St. Lawrence; of the Mississippi 

 north of Arkansas ; Alabama ; Manitoba. Red River of the North ! 



Lampsilis gracilis Barnes. 



Unio gracilis BARNES, Am. Journ. Sci., ist sen, vi, p. 274, 1823. SOWERBY, 



Conch. Icon., xvi, pi. xxxix, fig. 215, 1866. 

 Lampsilis gracilis SIMPSON, Synopsis, p. 573, 1900. 



Range. Eastern Texas; Mississippi, and St. Lawrence drainage; 

 Manitoba. Red River of the North ! 



Genus Strophitus Rafinesque. 

 Strophitus rugosus Swainson. 



Anodon rugosus SWAINSON, Zool. 111., ist sen, n, pi. xcvi, 1822. 

 Alasmodonta edentula SAY, New Harmony, Diss., II, No. 22, p. 340, 1829. 

 Anodonta edentula FERUSSAC, Mag. de Zool., Guerin, 1835, p. 25. 

 Strophitus edentulus CONRAD, Proc. Acad. Nat. Sci. Phila., vi, p. 263, 1853. 

 Anodonta undulata HILDRETH, Am. Journ. Sci., xrv, p. 290, 1828. 

 Anodon areolatus SWAINSON, Zool. 111., 2d sen, I, pi. xvm, 1829. 

 Anodonta wardtana LEA (1836), Trans. Am. Phil. Soc., vi, p. 46, pi. xrv, 



fig. 42, 1838. 



Anodonta tetragona LEA (1845), op. tit., x, p. 82, pi. vin, fig. 25, 1845. 

 Anodonta arkansasensis LEA, op. tit., xi, p. 293, pi. xxix, fig. 56, 1852. 

 Anodonta shafferiana LEA, op. tit., x, p. 288, pi. xxvi, fig. 50, 1852. 

 Anodonta showalteri LEA (1860), Journ. Acad. Nat. Sci. Phila., 1862, p. 215, 



pi. xxxin, fig. 284, 1862. 

 Alasmodon rhombica ANTHONY, Am. Journ. Conch., I, p. 158, pi. 12, fig. 5, 



1865. 

 Anodonta salmonea CLESSIN, Conch. Cab., Mon. Anodonta, p. 91, pL xxrv, 



figs. 1-2, 1873. 

 Anodonta pa-vonia LEA. 



Range. St. Lawrence system; the whole of the Mississippi 

 drainage, Texas, Alabama, the Atlantic drainage ; Manitoba. 



Red River of the North I Lake Winnipeg ! Great Playgreen Lake ! 

 Saskatchewan River. 



Genus Anodonta Lamarck. 

 Anodonta beringiana Middendorff . 



Anodonta cellensis var. beringiana MIDD., Sib Reise, n, p. 284, pi. xxvin, 



figs. 4-7, pi. xxix, figs. 1-4, 1851. 



Anodonta youconensis LEA, Proc. Acad. Nat. Sci. Phfla., xi, p. 81, 1867. 

 Anodonfa youkanensis LEA, Journ. Acad. Nat. Sci. Phila., n. s., vi, p. 287, pi. 



XL, fig. 99, 1868. 



Range. Drainage into Bering Sea from Asia and America ; also 

 Cook Inlet drainage. 



Kenai Peninsula ! Kuskokwim River near Redoubt Kolmakof ! 

 Yukon River below Anvik, in pools and quiet sloughs left by the 



