538 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



II, 1857, p. 494.—* B. H. Wright, Check List, 1888.—* Pjetel, Conch. Sam., 



III, 1890, p. 162. 



Margaron (Unto) pallescens Lea, Syn., 1852, p. 27; 1870, p. 43. 



Gulf drainage of the United States, from the Flint to. the Pearl River. 



tLAMPSILIS PORPHYREUS Lea.' 



■' Unio porphyr.eus Lea, Pr. Ac. N. Sci. Phila. , V, 1861, p. 60 ; * .JL Ac. N. Sci. Phila., 

 V, 1862, p. 80, pi. X, fig. 228; *0b8., VIII, 1862, p. 84, pi. x, fig. 228.— B. H. 

 Wright, Check List, 1888. 



Marijaron (Unto) porphyreus Lea, Syn., 1870, p. 41. 



Oahawba and Coosa rivers, Alabama. 



tLAMPSILIS STRAMINEUS Conrad. 



* Unio stramineus Conrad, Am. Jl. Sci., XXV, 1834, p. 339, pi. i, fig. 6; *New F. 



W. Shells, 1834, p. 71.— *Ferussac, Guer. Mag., 1835, p. 29.— * Moller, Syn. 

 Nov. Gen., 1836, p. 198.— * Conrad, Monog., X, 1838, p. 91, pl.L, fig. 1. 

 — *Hanley, Test. Moll., 1842, p. 209; *Biv, Shells, 1843, p. 209, pi. xxiii, 

 fig. 45. — *Catlow and Reeve, Conch. Norn., 1845, p. 64. — * Conrad, Pr. 

 Acad. N. Sci. Phila., VI, 1853, p. 258.— *H. and A. Adams, Gen. Rec. MolL, 

 II, 1857, p. 495.— * Sowerby, Conch. Icon., XVI, 1866, pi. xxxix, fig. 217, 

 1868, pi. I.XXX, fig. 422.— *B. H. Wright, Check List, 1888.— *P^tel 

 Conch. Sam., Ill, 1890, p. 168. 

 ^ Margarita (Unio) stramineus Lea, Syn., 1836, p. 39; 1838, p. 25. 



* Margaron ( Unio) stramineus Lea, Syn , 1852, p. 28; 1870, p. 35. 



Southern Alabama, southern Mississippi. 



tLAMPSILIS REEVIANUS Lea. 



* Unto reeviamis Lea, Tr. Am. Phil. Soc, X, 1852, p. 272, pi. xx, fig. 28; *Obs., V, 



1852, p. 28, pi. XX, fig. 28.—* Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 256.— 

 *H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 494. — * Kuster, Conch. Cab. 

 Unio., 1861, p. 247, pi. Lxxxiii, fig. 2.—* B. H. Wright, Check List, 1888. 

 — *P^TEL, Conch. Sam., Ill, 1890, p. 165. 

 ^Margaron (Unio) reeviamis Lea, Syn., 1852, p. 28; 1870, p. 44. 

 Louisiana; Texas; Arkansas. 



tLAMPSILIS POWELLII Lea. 



* Unio powellii Lea, Pr. Am. Phil. Soc, V, 1852, p. 252 ; * Tr. Am. Phil. Soc, X, 1853, 



p. 270, pi. XIX, fig. 25; *Obs., V, 1852, p. 26, pi. xix, fig. 25.-* Conrad, Pr. 

 Ac. N. Sci. Phila., VI, 1853, p.255.— *H. and A. Adams, Gen. Rec. Moll., 

 II, 1857, p. 494.— *Musgrave, Phot. Conch., 1863, pi. ii, fig. 8.— * Sow- 

 erby. Conch. Icon., XVI, 1868, pi. lxx, fig. 359.—* B. H. Wright, Check List, 

 1888.—* P.ETEL, Conch. Sam., Ill, 1890, p. 164. 

 ""Margaron ( Unio) poiDellii Lea, Syn., 1852, p. 28 ; 1870, p. 44. 



Salina and Clinton, Arkansas; Guadalupe liiver, Texas; Spring- 

 River, Kansas (Cragin). 



1 1 am a little uncertain as to where this species should be placed, as I have only 

 seen the two specimens in the Lea collection, which are very poor and distorted. 

 The uacre is purple. 



