NO. 12ns. SYXOPSIS OF THE XJfADEXSfMPSOX. 731 



tUNIO SAGITTIFORMIS Lea. 1 



* Z7n<0.sa<7iyoraisLEA,Tr. Am. Phil. Soc.. X, 1852, p. 277, pi. xxn, fig. 35; *Obs.,V, 



1852, p. 33, pi. xxn, fig. 35. * CONRAD, Pr. Ac. N. Sci. Pbila.,VI, 1853, p. 257. 



* H. and A. ADAMS, Gen. Eec. Moll., II, 1857, p. 491. * SOWKRBY, Conch. Icon., 

 XVI, 1868, pi. xcn, fig. 499.* B. H. WRIGHT, Check List, 1888. * P.KTEL, 

 Conch. Sam., Ill, 1890, p. 166. 



* Margaron ( Unio) sagittiformis LEA, Syu., 1852, p. 37; 1870, p. 60. 



Oconee liiver, Georgia; Abbeville, South Carolina. 



tUNIO ANGUSTATUS Lea. 



* Unio angustatus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 114, pi. xvn, fig. 43; * Obs., I, 



1834,p. 124,pl. xvii,fig. 43.* CONRAD, New F. W. Shells,1834, p. 67.* FERUS- 

 SAC, Guer. Mag., 1835, p. 26. * CONRAD, Monog., XI, 1838, p. 98, pi. LIV, fig. 

 2.* HANLEY, Test. Moll., 1842, p. 204 ; * Biv. Shells, 1843, p. 204, pi. xxn, fig. 

 25. *CATLO\vand REEVE,Conch. Nom., 1845, p. 55. * CONRAD, Pr. Ac. N. Sci. 

 Phila., VI, 1853, p. 245.* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491. 



* CHENU, 111. Conch. 1858, pi. xiv, figs. 1, la, 16. * KUSTER, Conch. Cab. Unio, 

 1861, p. 178, pi. LVI, fig. 4.* SOWERBY, Conch. Icon., XVI, 1868, pi. LXXII, fig. 

 372.* B. H. WRIGHT, Check List, 1888.* P.ETEL, Conch. Sani., Ill, 1890, p. 

 144. 



* Margarita ( Unio) angustatus LEA, Syn., 1836, p. 35 ; 1838, p. 23. 



* Margaron ( Unio) angustaim LEA, Syn., 1852, p. 36; 1870, p. 57. 



* t Unio extensus LEA, Pr. Ac. N. Sci. Phila., IX, 1857, p. 31 ; * Jl. Ac. N. Sci. Phila., 



IV, 1858, p. 68, pi. xn, fig. 49; *Obs., VI, 1868, p. 67, pi. xn, iig. 49. * B. H. 

 WRIGHT, Check List, 1888. 



* Margaron extensus LEA, Syn., 1870, p. 60. 



* t Unio subcylindraceus LEA, Pr. Ac. N. Sci. Phila., Ill, 1873, p. 422 ; * Jl. Ac. N. Sci. 



Phila., VIII, 1874, p. 58, pi. xx, fig. 57; *Obs., XIII, 1874, p. 62, pl.xx, fig. 

 57. *CATLOW and REEVE, Conch. Nom., 1845, p. 64. * B. H. WRIGHT, Check 

 List, 1888. 



South Carolina to western Georgia. 



tUNIO PERSTRIATUS Lea. 



* Unio perstriatus LKA., Tr. Am. Phil. Soc., X, 1852, p. 255, pi. xn, fig. 3; *Obs., V, 



1852, p. 11, pi. xn, fig. 3.* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 255. 

 *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 491. * SOWERBY, Conch. 

 Icon., XVI, 1868, pi. xcn, fig. 500.* B. H. WRIGHT, Check List, 1888. 

 *P^TEL, Conch. Sam., Ill, 1890, p. 163. 



* Margaron ( Unio) perstriatus LEA, Syn., 1852, p. 36 ; 1870, p. 57. 



* t Unio yracilentus LEA, Pr. Ac. N. Sci. Phila., 1, 1857, p. 85; * Jl. Ac. N. Sci. Phila., 



V, 1862, p. 58, pi. in, fig. 205; *Obs., VIII, 1862, p. 62, pi. in, fig. 205.* B. H. 

 WRIGHT, Check List, 1888. 



* Margaron ( Unio) gracilentua LEA, Syn., 1870, p. 60. 



* t Unio perlatuH LEA, Pr. Ac. N. Sci. Phila., VII, 1863, p. 193; * Jl. Ac. N. Sci., VI, 



1866, p. 15, pi. iv, fig. 13 ; * Obs., XI, 1867, p. 19, pi. iv, fig. 12." B. H.WRIGHT, 

 Check List, 1888. 



* Margaron ( Unio) perlatus LEA, Syn., 1870, p. 60. 



North and South Carolina. 



1 A very singular shell, much cut away at the anterior base, and, perhaps, abnormal. 



