574 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Concli., Ist ser., Ill, 1845, p. 12.— *Kuster, Conch. Cab. Unioj 1852, p. 19, 

 pi. Ill, fig. I. 

 '^ Symphynota fragilis Ferussac, Gner. Mag., 1835, p. 25. 



* Metaptera fragilis Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. 



* Unio fragilis vav. gracilis P^etel, Conch. Sam., Ill, 1890, p. 153. 

 ^ Mya plana Eatox, Zool. Text-Book, 1826, p. 221. 



* (7nio planus Conrad, New F. W. Shells, 1834, p. 71. 



* Unio (Nicia) atrata Swainson, Zool. 111., 1841, pi. clxxi. 



* Unio atratus Hanley, Test. Moll., 1842, p. 199 ; * Biv. Shells, 1843, p. 199, pi. xxi, 



fig. 29.— 'H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 492.— *Pji;tkl, 

 Conch. Sam., Ill, 1890, p. 145. 



Entire Mississippi River drainage, St. Lawrence system ; Red River 

 of the North; Hudson River; eastern Texas. 



tLAMPSILIS LiEVISSIMUS Lea. 



*Symphynota lamssima, Lea, Tr. Am. Phil. Soc, III, 1830, p. 444, pi. xiii, fig. 23; 



* Obs., I, 1834, p. 58, pi. xiii, fig. 23. — Short and Eaton, Transylvania Jl., 

 1831, p. 80. 



* Unio Iwvissima, Deshayes, An. sans Vert., 2d ed., VI, 1835, p. 558; 3d ed., II, 



1839, p. 675. 



* Unio la'vissimus Conrad, New F. W. Shells, 1834, p. 70.—* Hanley, Test. Moll., 



1842, p. 174 ; * Biv. Shells, 1843, p. 174, pi. xxi, fig. 41.—" Catlow and Reeve, 

 Conch. Nom., 1845, p. 60.—* H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 498.— 



* SowERBY, Couch. Icon., XVI, 1866, pi. XLVi,fig. 250.~*B. H. Wright, Check 

 List, 1888.—* PyETEL, Conch. Sam., Ill, 1890, p. 156. 



* Margarita ( Unio) losvissimus Lea, Syn. , 1836, p. 11 ; 1838, p. 13. 

 "" Mm-garon ( Unio) Icevissimus Lea, Syn., 1852, p. 19; 1870, p. 28. 



*Z7mo ohioensis Say, Am. Conch., VI, 1834. — Kuster, Conch. Cab., 1866, p. 20, pi. 

 LXIX, fig. 5. 



* Symphynota ohioensis Ferussac, Guer. Mag., 1835, p. 25. 



"^ Metaptera ohioiens-is Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. 



* Unio discoidem Sowerby, Couch. Icon., XVI, 1866, pi. liii, fig. 275. 



Mississippi drainage generally; eastern Texas; southern Michigan; 

 western New York. 



tLAMPSILIS ALABAMENSIS Conrad. 



* Sympliynota inflata Lea, Tr. Am. Phil. Soc, IV, 1831, p. 99, pi. xiv, fig. 28; 



Obs., I, 1834, p. 109, pi. XIV, fig. 28.— Ferussac, Guer. Mag., 1835, p. 25. 



* Metaptera inflata Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 260. 



* Margarita ( Unio) inflatus Lea, Syn., 1836, p. 11, 1838, p. 13. 



* Unio inflatus Hanley, Test. Moll., 1842, p. 174; * Biv. Shells, 1843, p. 174, pi. xxi, 



fig. 45. — * Catlow and Reeve, Conch. Nom., 1845, p. 60.— *Kustek, Conch. 

 Cab. Unio, 1852, p. 17, pi. ii, fig. 1.—* H. and A. Adams, Gen. Rec. Moll., II, 

 1857, p. 498.— * Sowerby, Conch. Icon., XVI, 1866, pi. xlv, fig. 246.— *B. H. 

 Wright, Check List, 1888,— *PiETEL, Conch. Sam., Ill, 1890, p. 155. 



* Margaron ( Unio) inflatus Lea, Syn., 1862, p. 28; 1870, p. 28. 



* Unio alahamensis Conrad, New F. W. Shells, 1834, p. 67.^ 



Alabama and Tombigbee River areas. 



I New name given by Conrad for Unio inflates Lea, preoccupied by Barnes. 



