536 PROCEEDINGS OF THE NATIOXAI. MUSEUM. 



* Unio virginiana LAMARCK, An. sans. Vert., VI. 1819, p. 79. * DELESSERT, Rec. 



Coq. Lam., 1841, pi. xn, fig. 

 ' I'nio lineata VALENCIENNES, EIR-. Meth., II, 1827, p. 151, pi. ccxLvm, fig. 5. 



* Cnio elongata GOODRICH, 111. Nat. Hist., II, 1829, p. 523, fig. 



I'nio lenebrosrts CONRAD, New F. W. Shells, 1834, p. 42, pi. MI, fig. 1; p. 72. 

 * FERUSSAC, Guer. Mag., 1835, p. 29.* MOLLER, Syn. Nov. Gen. 1836, p. 207. 

 *CHENU, Bib. Conch., 1st ser., Ill, 1845, pi. n, fig. 5. * B. H. WRIGHT, 

 Check List, 1888.* PJETEL, Conch. Sam., Ill, 1890, p. 169. 



I'nio meZin MS CONRAD, Monog. XI, 1838, p. 101, pi. LV, tig. 1. SOWERBY, Conch. 

 Icon., XVI, 1868, pi. LXXXVII, fig. 467. 



* I'nio mellinus PJETEL, Conch. Sam., Ill, 1890, p. 159. 



* Cnio boydianus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soc.,VIII, 



1843, p. 216, pi. xvi, fig. 32; * Obs., Ill, 1842, p. 54, pi. xvi, fig. 22.* DE KAY, 

 Zool. of New York, Pt. 5, 1843, p. 189. * CONRAD, Pr. Ac. N. Sci. Phila.,VI, 

 1853, p. 245. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 492. * C'HExr, 

 111. Conch., 1858, pi. xxxii, tigs. 2, 2a, 26. * B. H.WRIGHT, Check List, 

 1888.* P.ETEL, Conch. Sam., Ill, 1890, p. 146. 

 * Margaron (Unio) boydianns LEA, Syn., 1852, p. 38; 1870, p. 62. 



* Unio crassus KUSTER, Couch. Cab. Unio., 1854, p. 113, pi. xxxi, fig. 5. 



* Mya oblongata, WOOD, Index Test., 1856, p. 199, pi. i; Supplement, tig. 2. 



* Unio obliqniradiatus REEVE, Conch. Icon., XVI, 1865, pi. xxix, fig. 151. *P.E- 



TEL, Conch. Sam., Ill, 1890, p. 161. 



fLAMPSILIS RADIATUS var. CONSPICUUS Lea. 



* Unio conspicuus LEA, Pr. Ac. N. Sci. Phila., II, 1872, p. 156; *J1. Ac. N. Sci. 



Phila., VIII, 1874, p. 34, pi. xi, fig. 31; *Obs., XIII, 1874, p. 38, pi. xi, fig. 

 31.* B. H. WRIGHT, Check List, 1888. 



St. Lawrence drainage; Manitoba; Atlantic region south to North 

 Carolina (var. conspicuus in North Carolina and southern Virginia). 



Gould ' reports L. radiatus from the north shore of Lake Superior, 

 and there is a shell in the TJ. S. National Museum from the northwest 

 boundary of Wisconsin which is probably this species. 



fLAMPSILIS HYDIANUS Lea. 



* Unio liydianus LEA, Tr. Am. Phil. Soc., VI, 1838, p. 14, pi. vi, fig. 14; * Obs., 



II, 1838, p. 14, pi. vi, fig. 14. * TROSCHEL, Arch, fiir Naturg., VII, 1839, p. 

 234. * HANLEY, Test. Moll., 1842, p. 192; Biv. Shells, 1843, p. 192, pi. xxm, 

 fig. 6. *CATLOW and REEVE, Conch. Nom., 1845, p. 60. * KUSTEK, Conch. 

 Cab. Unio., 1861, p. 201, pi. LXVII, fig. 2.* CHK.NU, 111. Conch., 1858, pi. xvn, 

 fig. 3, 3a, 3ft ; pi. xxiv, figs. 7, 7o, 75. * H. and A. ADAMS, Gen. Rec. Moll., II, 

 1857, p. 494. * SOWERBY, Conch. Icon., XVI, 1866, pi. xxxvn, fig. 203. *B. 

 H. WRIGHT, Check List, 1888.* P.ETEL, Conch. Sam., Ill, 1890, p. 155. 



* Margarita ( Unio) liydianus LEA, Syn., 1836, p. 25; 1838, p. 19. 



* Margaron ( Unio) hydianus LEA, Syn., 1852, p. 28; 1870, p. 44. 



* Unioplacitus LEA, Pr. Am. Phil. Soc., V, 1852, p. 252; 2 *Tr. Am. Phil. -Sue., 1852. 



p. 279, pi. xxm, tig. 38; * Obs.,V, 1852, p. 35, pi. xxm, fig. 38. * COM:AI>, 

 Pr. Ac. N. Sci. Phila., VI, 1838, p. 255. * H. and A. ADAMS, Gen. Rec. Moll., 

 II, 1857, p. 494. * KUSTER, Conch. Cab. Unio., 1861, p. 262, pl.LXXXVin, tig. 

 2. *B. H. WRIGHT, Check List, 1888. * P.ETEL, Conch. Sam., 1890, p. 163. 



* Margaron ( Unio) placitus LEA, Syn., 1852, p. 29; 1870, p. 46. 



Eastern half of Texas; Indian Territory; Arkansas; east to Ala- 

 bama. 



'Agassi/, Lake Superior, p. 245. -Merely a young hydianus. 



