N<>. 1205. SYNOPSIS OF THE SAIADESSIMI'SOX. 709 



UNIO MASONI Conrad. 1 



* Utiio masoni CONRAD, New F. W. Shells, 1834, p. 34, pi. v, fig. 2, p. 70. *FER- 



TSSAC, Guer. Mag., 1835, p. 29. CONRAD, Monog., Ill, 1836, p. 28, pi. xn, tig. 

 2._* MILLER, Syn. Xov. Gen., 1836, p. 204.* HANLEY, Test. Moll., 1842, p. 201 ; 

 *Bi . Shells, 1843, p. 201, pi. xxm, fig. 18. *CATLOW and REEVE, Conch. 

 Norn., 1845, p. 61. *CiiEXi:, Bil>. Conch., 1st ser., Ill, 1845, p. 18, pi. n, fig. 

 1. * KTSTER, Conch. Cab. Uuio, 1852. p. 34, pi. v, fig. 6. * CONRAD, Pr. Ac. 

 N. Sci. Phila., VI, 18o3, p. 252. H. and A. ADAMS, Gen. Rec. Moll., II, 1857, 

 p. 492. *B. H. WRIGHT, Check List, 1888. * P^ETEL, Conch. Sam., Ill, 1890, 

 p. 158. 



* Margarita ( Unio) masoni LEA, Syn., 1836, p. 33; 1838, p. 23. 



* Margaron ( Unio) masoni LEA, Syn., 1852, p. 34; 1870, p. 55. 



Savannah Kiver, Georgia. 



fUNIO FRATERNUS Lea. 



* Unio fraternus LEA, Tr. Am. Phil. Soc., X, 1852, p. 263, pi. xvi, fig. 15; *Obs., V, 



1852, p. 19, pi. xvi, fig. 15. * CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, 

 p. 249. *H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 493. *KUSTER, 

 Conch. Cab. Unio, 1861, p. 201, pi. LX vn, fig. 2.* B. H. WRIGHT, Check List, 

 1888.* P/ETEL, Conch. Sam., Ill, 1890, p. 153. 



* Margaron ( Unio) fraternus LEA, Syn., 1852. p. 32; 1870, p. 51. 



Abbeville district, South Carolina, to Columbus, Georgia. 



fUNIO CONGAR^US Lea. 



* Unio congaraeus LEA, Tr. Am. Phil. Soc., IV, 1831, p. 72, pi. vi, fig. 4; Obs., I, 



1834, p. 82, pi. vi, fig. 4.* CONRAD, New F. W. Shells, 1834, p. 68.* FERUS- 

 SAC, Guer. Mag., 1835, p. 26.* CONRAD, Mouog., Ill, 1836, p. 27, pi. xn, fig. 

 1.* HANLEY, Test. Moll., 1842, p. 200 ; * Bi v. Shells, 1843, p. 200, pi. xxn, fig. 

 31. *CATLOwrtTidREEVE,Conch.Nom., 1845, p. 57.^* CONRAD, Pr. Ac. N. Sci. 

 Phila., VI, 1853, p. 247.* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 

 493. *CHENU, 111. Conch., 1858, pi. in, figs. 5, 5a, 5Z>. *SO\VERBY, Conch. 

 Icon., XVI, 1867, pi. LIX, fig. 296.* B. H. WRIGHT, Check List, 1888. 

 *PJETEL, Conch. Sain., Ill, 1890, p. 148. 



* Margarita ( Unio) congaroRxs LEA, Syn., 1836, p. 32; 1838/ p. 22. 



* Margaron (Unio) congarceus LEA, Syn., 1852, p. 33; 1870, p. 54. 



*t Unio fulvus LEA, 2 Tr. Am. Phil. Soc., V, p. 96, pi. xin, fig. 39; *Ohs., I, 1834 

 p. 208, pi. xin, fig. 39.* FERUSSAC, Guer. Mag., 1835, p. 29.* HANLEY, Test. 

 Moll., 1842, p. 200; * Biv. Shells, 1843, p. 200, pi. xxm, fig. 32.* CATLOW and 

 REEVE, Conch. Norn., 1845, p. 59. *H. and A. ADAMS, Gen. Rec. Moll., II, 

 1857, p. 493. *SOWERBY, Conch. Icon., XA r I, 1858, pi. LXXXIX, fig. 483. 

 *B. H. WRIGHT, Check List, 1888.* P.KTEL, Conch. Sam., Ill, 1890, p. 153. 



* Margarita ( Unio) fulrus LEA, Syn., 1836, p. 32; 1838, p. 22. 

 'Margaron (Unio) fulinis LEA, Syn., 1852, p. 33; 1870, p. 54. 



Cape Fear River, North Carolina; south to Savannah, Georgia. 



'I have never seen this species, but should judge from the figure that it groups 

 with U. crasaidens. 



2 The type is a young shell, and is not the same as adult shells which are in the 

 Lea collection under that name. 



