PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XXII. 



tPLEUROBEMA CUNEOLUS Lea. 



* Unio cuneolus LEA, Pr. Am. Phil. Soc., I, 1840, p. 286; * Tr. Am. Phil. Soc., VIII, 



1842, p. 193, pi. vn, fig. 3; *Obs., Ill, 1842, p. 31, pi. vn, fig. 3. *CONRAD, Pr. 

 Ac. N. Sci. Phila,, VI, 1853, p.247. *H. and A. ADAMS, Gen. Rec. Moll., II, 

 1857, p. 495. *CHENU, 111. Conch., 1858, pi. xxx, figs. 2, 2a, 2b. "KUSTER, 

 Conch. Cab. Unio, 1861, p. 182, pi. LXVII, fig. 4.* REEVK, Conch. Icon., XVI, 

 1865, pi. xxin, fig. 107.* B. H. WRIGHT, Check List, 1888.* PJETEL, Conch. 

 Sam., Ill, 1890, p. 149. 



* Margaron ( Unio) cuneolus LEA, Syn., 1852, p. 24 ; 1870, p. 38. 



t* Unio clinchensis LEA, Pr. Ac. N. Sci. Phila., XI, 1867, p. 81; *J1. Ac. N. Sci. 

 Phila., VI, 1868, p. 278, pi. xxxvn, fig. 91 ; * Obs., XII, 1869, p. 38, pi. xxxvn, 

 iig.91. * B.H.WRIGHT, Check List, 1888. * P.ETKL, Conch. Sam., Ill, 1890, 

 p. 148. 



* Margaron ( Unio) clinchensis LEA, Syn., 1870, p. 38. 



Tennessee Biver system. 



tPLEUROBEMA LESLEYI Lea. 



* Unio lesleyi LEA, Pr. Ac. N. Sci. Phila., IV, 1860, p. 306; * Jl. Ac. N. Sci. Phila., 



IV, 1860, p. 352, pi. LVIII, fig. 177 ; * Obs., VIII, 1860, p. 34, pi. LVIII, fig. 177. 



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



* Margaron ( Unio) lesleyi LEA, Syn., 1870, p. 40. 



Kentucky; Tennessee. 



tPLEUROBEMA RAVENELIANA Lea. 



*Unio ravenelianus LEA,' Tr. Am. Phil. Soc., V, 1834, p. 32, pi. in, fig. 5; *Obs., 

 1, 1834, p. 144, pi. in, fig. 5. * FERUSSAC, Guer. Mag., 1835, p. 29. * HANLEY, 

 Test. Moll., 1842, p. 187; *Biv. Shells, 1843, p. 187, pi. xx, fig. 59. * CATLOW 

 and REEVE, Conch. Norn., 1845, p. 63.* H. and A. ADAMS, Gen. Rec. Moll., II, 

 1857, p. 495.* KuSTER,Conch.Cab. Unio, 1862, p. 269, pi. xci, fig. 1." REEVE, 

 Conch. Icon., XVI, 1864, pl.xvi, fig. 70. * B. H. WRIGHT, Check List, 1888. 



^Margarita (Unio) ravenelianus LEA, Syn. ,1836, p. 22; 1838, p. 18. 



* Margaron (Unio) ravenelianus, LEA, Syn., 1852, p. 26; 1870, p. 40. 



*Unio rudis CONRAD, Monog., IX, 1837, p. 76, pi. XLIII, fig. 1. * CONRAD, Pr. 



Acad. N. Sci. Phila., VI, 1853, p. 257. 

 *Unio decisus KUSTER, (part) Conch. Cab. Unio, 1852, p. 41, pi. vni, tig. 1. 



Kentucky; Tennessee; western North Carolina. 



tPLEUROBEMA OVIFORMIS Conrad. 



* Unio oviformis CONRAD, New F. W. Shells, 1834, p. 46, pi. in, fig. 6; p. 70. 



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

 208. * CHENIT, Bib. Conch., 1st ser., Ill, 1845, p. 22, pi. n, tig. 7.* CON- 

 RAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 254. *H. and A. ADAMS, Gen. Rec. 

 Moll., II, 1857, p. 495. * B. H. WRIGHT, Check List, 1888. * P^TEL, Conch. 

 Sam., Ill, 1890, p. 162. 



Margaron (Unio) oviformis LEA, Syn., 1852, p. 26; 1870, p. 40. 



Tennessee. 



1 In May, 1834, Conrad published a Unio raveneli in New Fresh Water Shells (p. 39) 

 which belongs to the complanalus group. Lea's name, ravenelianus, appeared in 

 August or September of the same year. Conrad, claiming priority for his name, 

 substituted that of Unio rudis for Lea's species. As the names are really different, 

 that of Leu, had better stand. 



