NO. 1205. SYJ^rOPSIS OF THE NAIADJES— SIMPSON. 549 



fLAMPSILIS VANUXEMENSIS Lea. 



*Unio vanuxemensis Lea, Tr. Am. Phil. Soc, VI, 1838, p. 36, pi. xi, fig. 31 ; *0b8. 



II, 1838, p. 36, pi. XI, fig. 31.— *Troschel, Arch, lur Naturg, V, 1839, Pt. 2 

 p. 436.— *Hanley, Test. Moll., 1842, p. 193; * Biv. Shells, 1843, p. 193,pl.xxii 

 fig. 56.— *CATLOWandKEEVE, Conch. Norn., 1845, p. 65.— *Chenu, 111. Conch. 

 1858, pi. XIX, figs. 3, 3a, 36. — "'H. and. A. Adams, Gen. Eec. Moll., II, 1857, p 

 495.— *KusTER, Conch. Cab. Unio, 1862, p. 272, pi. xci, fig. 6.— *P.5Etel, 

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



* Margarita {Unio) vanuxemensis Lea, Syu., 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, Syu., 1870, p. 46. 



* Unio vanuxemii B. H. Wright, Check List, 1888. 



f*Unionitens Lea, Pr. Am. Phil. Soc, I, 1840, p. 288; *Tr. Am, PhiL Soc, VIII, 

 1843, p. 205, pi. XII, fig. 19 ; * Obs., Ill, 1842, p. 43, pi. xii, fig. 19.—^ Coxrad, 

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

 XLVii, fig. 1.— *H. and A. Adams, Gen. Eec. Moll., II, 1857, p. 498. — *Chenu, 



III, Conch., 1858, pi. xxviii, figs. 5, 5a, 5&. — *Eeeve, Conch. Icon. XVI, 1865, 

 pi. XXVIII, fig. 144.— *B. H. Wright, Check List, 1888.— "P^tel, Couch. 

 Sam., Ill, 1890, p. 161. 



""Margaron ( Unio) nitens Lea, Syu., 1852, p. 29; 1870, p. 45. 



i*Unio umbrans Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 104; ''Jl. Ac. N. Sci. Phila., 



V, 1858, p. 72, pi. XIII, fig. 53; *Obs., VI, 1858, pi. xm, fig. 53.— ^Sowerby, 

 Conch. Icon., XVI, 1866, pi. xxxiv, fig. 179.— *B. H. Wright, Check List, 

 1888.—" P.ETEL, Conch. Sam., Ill, 1890, p. 171. 



* Margaron ( Unio) umhrans Lea, Syn., 1870, p. 45. 



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



IV, 1858, p. 83, pi. XVII, 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 * Uniopgbasii 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.etel, Conch. Sam., Ill, 1890, p. 164. 



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



t* Unio fabaceus 'Lea, ^ Proc Ac. N. Sci. Phila., V, 1861, p. 38; * Jl. Ac. N. Sci. 

 Phila., V, 1862, p. 90, pi. xiii, 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,^ 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, Syn., 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. 



fLAMPSILIS OBSCURUS Lea. 



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



p. 7, pi. Ill, fig. 7.— *Troschel, Arch, fiir Naturg., V, 1839, Pt. 2, p. 234.— 

 * Hanley, Test. Moll., 1842, p. 194 ; * Biv. Shells, 1843, p. 194, pi. xxii, fig. 58.— 



' A small, rather short form of vanuxemensis . 



- The type is rather thin aud high, but is uo doubt a mere variation of the above 

 species. 



