722 PROCEEDINGS OF THE NATIONAL MUSEUM. voL.xxir. 



*Chen(;, Bib. Conch., 1st ser., Ill, p. 9, pi. iir, fig. 8. — * Conrad, Pr. Ac. 

 N. Sci. PMla., VI, 1853, p. 256.— * B. H. Wright, Check List, 1888. 

 ■ * Margarita (Unto) watereensis Lea, Syu., 1836, p. 31; ^ 1838, p. 22. 



* Margaron ( Unio) ivatereensis, Lea, Syn., 1852, p. 33; 1870, p. 53. 



* Unio ivatereensis, H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 493. — P^etel, 



Conch. Sam., Ill, 1890, p. 172. 



* t Unio griffithianus, Lea, Tr. Am. Phil. Soc, V, 1834, p. 103, pi. xv, fig. 46 ; Obs., I, 



1834, p. 215,pl. XV, fig.46.— *Ferussac, Gner. Mag., 1835, p. 29.— *Hanley, 

 Test. Moll., 1842, p. 199 ; * Biv. Shells, 1843, p. 199, pi. xxiii, fig. 28.—* Catlow 

 anclREEVE, Conch. Nom., 1845, p. 59. — *Conrad, Pr. Ac. N. Sci. Phila.,VI,1853, 

 p. 250.— *H. and A. Adams, Gen. Rec. Moll., II, 1857, p 493.— *Kuster, Conch. 

 Cab. Unio, 1861, p. 208, pi. lxix, fig. 2.—* Sowerby, Conch. Icon., XVI, 1868, 

 pi. Lxxxix, fig. 449.—* B. H. Wright, Check List, 1888.—* P^etel, Conch. 

 Sam., Ill, 1890, p. 154. 



* Margarita ( Unio) griffithianus, Lea, Syn., 1836, p. 31; 1838, p, 22. 



* Margaron ( Unio) griffithianus, Lea, Syn., 1852, p. 33 ; 1870, p. 52. 



*t Unio planilaterus, Conrad, Monog., XII (no date after 1838), p. 103, pi. i.vii, 

 fig.l; Pr. Ac. N. Sci.Phila., VI, 1853, p. 255.— * B. H. Wright, Check List, 

 1888.—* P^tel, Conch. Sam., Ill, 1890, p. 163. 



* Margaron {Unio) planilaterus. Lea, Syn., 1870, p. 51. 



* t Unio fuliginosus, Lea, Pr. Am. Phil. Soc, IV, 1845, p. 164; Tr. Am. Phil. Soc, 



X, 1848, p. 78, pi. VII, fig. 19. 



* ]Unio rufmcnlusljE.A, Pr. Am. Phil. Soc, V, 1852, p. 252; *Tr. Am. Phil. Soc, X, 



1852, p. 258, pi. XIV, fig. 7; *Obs., V, 1852, p. 14, pi. xiv, fig. 7.—* Conrao, 

 Pr. Ac. N. Sci. Phila., VI, 1853, p. 257.—* H. and A. Adams, Gen. Eec. Moll., 

 II, 1857, p. 493.— * Sowerby, Couch. Icon., XVI, 1868, pi. lxxiii, fig. 377.— 

 *B. H. Wright, Check List, 1888.— *PiETEL, Conch. Sam., in, 1890, p. 166. 



* Margaron {Unio) rufusculus Lea, Syu., 1852, p. 33; 1870, p. 54. 

 *Mya rigida Wood, Ind. Test. Rev., 1856, p. 200, pi. i, siipp. fig. 10. 



* t Unio ahbevillensis Lea, Pr. Ac N. Sci. Phila., 1, 1857, p. 84; * Jl. Ac. N. Sci. Phila., 



IV, 1858, p. 51, pi. VI, fig. 34; *0b8., VI, 1858, p. 51, pi. vi, fig. 34.— *B. H. 

 Wright, Check List, 1888.— *PyETEL, Conch. Sam., Ill, 1890, p. 143. 



^Margaron {Unio) abievillensis Lea, Syn., 1870, p. 52. 



* t Unio contractus Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 86 ; * Jl. Ac. N. Sci. Phila., 



V, 1862, p. 203, pi. XXIX, fig. 272; * Obs., IX, p. 25, pi. xxix, fig. 272.—* B. H. 

 Wright, Check List, 1888. 



^Margaron {Unio) contractus Lea, Syn., 1870, p. 61. 



*iUnio virens Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; * Jl. Ac. N. Sci. Phila., 



IV, 1858, p. 80, pi. XVI, fig. 60; *()bs., VI, 1858, p. 80, pi. xvi, fig, 60.— 



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

 ^Margaron { Unio) virens Lea, Syn., 1870, p. 52. 



*fUnio savannahensis Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 169; * Jl. Ac. N. Sci. 

 Phila., IV, 1858, p. 81, pi, xvi, fig. 61 ; * Obs., VI, 1858, p, 81, pi. xvi, fig. 61.— 

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



* Margaron {Unio) savannahensis Lea, Syu., 1870, p. 51. 



""VUnio sulflavus Lea, Pr. Ac. N. Sci. Phila., IX, 1857, p. 170; *J1. Ac. N. Sci. 

 Phila., IV, 1858, p. 90, pi. xix, fig. 70; * Obs., VI, 1858, p. 90, pi. xix, fig. 70.— 



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

 *Margaron { Unio) suhflavus Lea, Syn., 1870, p. 52. 



* t Unio neusensis Lea, Pr. Ac. N. Sci. Phila., II, 1858, p. 41 ; * Jl. Ac. N. ScL Phila., 



V, 1859, p. 60, pi. IV, fig. 208; * Obs., VIII, 1860, p. 64, pi. iv, fig. 208.—* B. H. 

 Wright, Check List, 1888. 



*Margaron {Unio) neusensis Lea, Syn., 1870, p. 51. 



1 Lea changed the name rawerieK to watereensis, because the name ravenelian us had 

 been applied by him to a Unio. 



