NO. 1205. SYNOPSIS OF THE NAIADES SIMPSON. 549 



tLAMPSILIS VANUXEMENSIS Lea. 



*l'nio ranuxemensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 36, pi. xi, fig. 31; *Obs., 



II, 1838, p. 36, pi. xi, fig. 31. * TROSCHKL, Arch. iUr Naturg, V, 1839, Pt. 2, 

 p. 436. -HAXLEY, Test. Moll. ,1842, p. 193; * Biv. Shells, 1843, p. 193, pi. xxn, 

 fig. 56. * CATLOW and REEVE, Conch. Noui., 1845, p. 65. * CHENU, 111. Conch., 

 1858, pi. xix, figs. 3, 3a, 36. * H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 

 495. *KUSTER, Concti. Cab. Unio, 1862, p. 272, pi. xci, fig. 6. *PJSTEL, 

 Conch. Sam., Ill, 1890, p. 171. 



* Margarita ( Unio) vanuxemensis LEA, Syn., 1836, p. 26; 1838, p. 19. 

 *Margaron ( Unio) vanuxemensis LEA, Syn., 1852, p. 29. 



* Unio vanuxemensis CONRAD, Pr. Ac. N. Sci. Phila., 1853, p. 259. 

 ^Margaron ( Unio} vanuxemii LEA, Syn., 1870, p. 46. 



* rnio vanuxemii B. H. WRIGHT, Check List, 1888. 



\*Unio nitens LEA, Pr. Am. Phil. Soc., I, 1840, p. 288; *Tr. Am. Phil. Soc., VIII, 

 1843, p. 205, pi. xii, fig. 19; *0bs., Ill, 1842, p. 43, pi. xn, fig. 19. "CONUAD, 

 Pr. Ac. N. Sci. Phila., VI, 1853, p. 253.* KUSTER, Conch. Cab., 1856, p. 163, pi. 

 XLVII, fig. 1. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 498. *CHENU, 



III, Conch., 1858, pi. xxvin, figs. 5,5a,5fc. * REEVE, Conch. Icon. XVI, 1865, 

 pi. xxvin, fig. 144. *B. H. WRIGHT, Check List, 1888. * P.ETEL, Couch. 

 Sam., Ill, 1890, p. 161. 



*Margaron ( Unio) nitens LEA, Syn., 1852, p. 29; 1870, p. 45. 



t*E7wi0 umbrans LEA, Pr. Ac. X. Sci. Phila., 1, 1857, p. 104; *J1. Ac. N. Sci. Phila., 



V, 1858, p. 72, pi. xm, fig. 53; *Obs., VI. 1858, pi. xm, fig. 53. "SOWERBY, 

 Conch. Icon., XVI, 1866, pi. xxxiv, fig. 179. * 15. H. WRIGHT, Check List, 

 1888. *P.ETEL, Conch. Sam., Ill, 1890, p. 171. 



* Margaron ( Unio) umbrans LEA, Syn.. 1870, p. 45. 



t Unio tenebricus LEA, Pr. Ac. X. Sci. Phila., IX, 1857, p. 171 ; " Jl. Ac. N. Sci. Phila., 



IV, 1858, p. 83, pi. xvn, fig. 63 ; * Obs., VI, 1858, p. 83, pi. xvi, fig. 63.* B. H. 

 WRIGHT, Check List, 1888. 



* Margaron ( Unio) tenebricus LEA, Syn., 1870, p. 45. 



t * Unio pybasii LEA, Pr. Ac. N. Sci. Phila., II, 1858, p. 40; * Jl. Ac. N. Sci. Phila., V, 

 1862, p. 67, pi. vi, fig. 216; *Obs., VIII, 1862, p. 71, pi. vi, fig. 216. *B. H. 

 WRIGHT, Check Lisr, 1888. *P^TEL, Conch. Sam., Ill, 1890, p. 164. 



* Margaron ( Unio) pybasii LEA, Syn., 1870, p. 45. 



t * Uniofabaceus'LK\, ' Proc. Ac. N. Sci. Phila., V, 1861, p. 38; * Jl. Ac. N. Sci. 

 Phila., V, 1862, p. 90, pi. xm, fig. 238; *Obs., VIII, 1862, p. 94, pi. xm, fig. 

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



* Margaron ( Unio) fabaceus LEA, Syn., 1870, p. 46. 



t * Unio copei LEA, 2 Pr. Ac. N. Sci. Phila., XII, 1868, p. 144 ; * Jl. Ac. N. Sci. Phila., 



VI, 1869, p. 307, pi. XLVII, fig. 120; * Obs., XII, 1869, p. 67, pi. XLVII, fig. 120. 

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



* Margaron ( Unio) copei LEA, Syu., 1870, p. 45. 



t * Unio dispansus LEA, Pr. Ac. N. Sci. Phila., 1, 1871, p. 191 ; * Jl. Ac. N. Sci. Phila., 

 VIII, 1874, p. 19, pi. vi, fig. 16; * Obs., XIII, 1874, p. 23, pi. vi, fig. 16.* B. H. 

 WRIGHT, Check List, 1888. 



Cumberland and Tennessee river systems ; headwaters of the Coosa. 



tLAMPSILIS OBSCURUS Lea. 



* Unio obscurus LEA, Tr. Am. Phil. Soc., VI, 1839, p. 7, pi. in, fig. 7, * Obs., II, 1838, 



p. 7, pi. in, fig. 7. *TROSCHEL, Arch, fur Naturg., V, 1839, Pt. 2, p. 234. 

 k HANLEY, Test. Moll., 1842, p. 194 ; * Biv. Shells, 1843, p. 194, pi. xxn, fig. 58. 



1 A small, rather .short form of ranuxemensis. 



-The type is rather thin and high, but in no doubt a mere variation of the above 

 species. 



