NO. 1205. SYNOPSIS OF THE NAIADES— SIMPSON. 747 



LEY, Test. Moll., 1842, p. 213.— *Conrad, Pr. Ac. N. Sci., Phila., VI, 1853, p. 

 250.— ''H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 495.— '^Chenu, 111. 

 Conch., 1858, pi. xxxii, figs. 1, la, 16.— *Kuster, Conch. Cab. Unio, 1862, 

 p. 287, pi. xcvi, fig. 4.— *B. H. Wright, Check List, 1888. 

 *Margaron {Unio) holstonensis Lea, Syu., 1852, p. 25; 1870, p. 38. 



* Unio mundtis Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 83 ; *J1. Ac. N. Sci, Phila., VI, 



1866, p. 40, pi. XIV, fig. 38; ^Obs., XI, 1867, p. 44, pi. xiv, fig. 38.— *Eeeve, 



Conch. Icon., XVI, 1864, pi. xvi, fig. 72.'— *B. H. Wright, Check List, 



1888.— *P^tel, Conch. Sam., Ill, 1890, p. 160. 

 *Margaron {Unio) mundiis Lea, Syn., 1870, p. 40. 

 \*Unio laivi Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 189; *J1. Ac. N. Sci. Phila., 



VIII, 1874, p. 8, pi. II, fig. 4; *Obs., XIII, 1874, p. 12, pi. ii, fig. 4.— *B. H. 



Wright, Check List, 1888. 

 ] ^ Unio imUinoides Lea, Pr. Ac. N. Sci. Phila., I, 1871, p. 193; *J1. Ac. N. Sci. 



Phila., VIII, 1874, p. 16, pi. iv, fig. 12; *Obs., XIII, 1874, p. 20, pi. iv, fig. 12.— 



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

 \* Unio'bellulus'L^^,Vx. kc. N. Sci. Phila., II, 1872, p. 161; *JL Ac. N. Sci. Phila., 



VIII, 1874, p. 50, pL XVII, fig. 48; *Obs., XIII, 1874, p. 54, pi. xvii, fig. 



48.— B. H. Wright, Check List, 1888. 



Tennessee River system. 



tPLEUROBEMA BOURNIANUS Lea. 



* Unio ioiirnianus Lea, Pr. Am. Phil. Soc, I, 1840, p. 288; *Tr. Am. Phil. Soc, VIII, 



1842, p. 213, pi. XV, fig. 28; *Obs., Ill, p. 51, pi. xv, fig. 28.— *Conrad, Pr. 

 Ac. N. Sci. Phila., VI, 1853, p. 245.— *H. and A. Adams, Gen. Eec. Moll., II, 

 1857, p. 495.— *Chenu, 111. Conch., 1858, pi. xxviii, figs. 2, 2a, 26.— *B. H. 

 Wright, Check List, 1888.— ^Pjetel, Conch. Sam., Ill, 1890, p. 146. 

 ^ Maragron {Unio) lournianus Lea, Syn., 1852, p. 25; 1870, p. 39. 



Sciota Eiver. near Ohillicothe, Ohio. 



t PLEUROBEMA EDGARIANUS Lea. 



*Unio edgarianus Lea, Pr. Am. Phil. Soc, I, 1840, p. 288; *Tr. Am. Phil. Soc, 

 VIIl, 1842, p. 214, pi. XV, fig. 30; Obs., Ill, 1842, p. 52, pi. xv, fig. 30.—* Con- 

 rad, Pr. Ac. N. Sci. Phila., VI, 1853, p. 248.—* H. and A. Adams, Gen. Rec. 

 Moll., II, 1857, p. 495.—* Chenu, 111. Conch., 1858, pi. xxix, figs. 5, 5a, 56.— 

 * Kuster, Conch. Cab., 1861, p. 213, pi. lxx, fig. 5. — * Musgrave, Phot. 

 Conch., 1863, pi. ii, fig. 6.—* Reeve, Conch. Icon., XVI, 1864, pi. xv, fig. 

 65.—* B. H.Wright, Check List, 1888.—* P^tel, Conch. Sam., Ill, 1890, p. 

 151. 



* Margaron {Unio) edgarianus Lea, Syn., 1852, p. 25; 1870, p. 39. 



\*Unio ohuncus Lea, Pr. Ac. N. Sci., I, 1871, p. 192; * Jl. Ac. N. Sci., VIII, 1874, 

 p. 9, pi. II, fig. 5; *0b8., XIII, 1874, p. 13, pi. ii, fig. 5.-*B. H. Wright, 

 Check List, 1888. 



t * Unio andersonensis Lea, Pr. Ac. N. Sci. Phila., II, 1872, p. 155; * Jl. Ac, N. Sci. 

 Phila., VIII, 1874, p. 36, pi. xii, fig. 33; *0b8., XIII, 1874, p. 40, pi. xii, fig. 

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



Tennessee River system. 



' In the errata Reeve says this is not mundus, but that it is nearer cuneolns and 

 mooresianus. I have compared it with authentic specimens, and it is certainly 

 nearer mundus than either of the other mentioned species. 



