NO. 1205. SYNOPSIS OF THE NAIADES— SIMPSON. 725 



* f [Jtti'o c(>m<«s Lea, Pr. Ac. N. Sci. Phihi., Ill, 1873, p. 422; * Jl. Ac. N. Sci. Phila., 



VIII, 1874, p. 55, pi. XIX, fig. 53; *Obs., XIII, 1874, p. 59, pi. xix, fig. 53.— 



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

 nPreJo corneus Lea, Pr. Ac. N. Sci. Phila., Ill, 1873, p. 423; *J1. Ac. N. Sci. 



Phila., VIII, 1874, p. 59, pi. xx, fig. 58; *Obs., XIII, 1874, p. 63, pi. xx, fig. 

 . 58.— -^B. H.Wright, Check List, 1888. 

 *t Unio invenustiis Lea, Pr. Ac. N. Sci. Phila., Ill, 1873, p. 424; *JI. Ac. N. Sci. 



Phila., VIII, 1874, p. 66, pi. xxii, fig. 62; *Obs., XIII, 1874, p. 70, pi. xxii, 



fig. 62.—* B. H. Wright, Check List, 1888. 

 *\A7-conaia2}rovanv1ie7-iana'Pi'LSBRY, Nat. Canadienne, XX, 1890, p. 171; *Pr. Ac. 



N. Sci. Phila., 1892, p. 132, pi. vii, figs. 4-6.' 



t UNIO COMPLANATUS var. JEJUNUS Lea. 



* Uniojejunus Lea, Tr. Am. Phil. Soc, VI, 1838, p. 9, pi. iv, fig. 9; *Obs., II, 



1838, p. 9, pi. IV, fig. 9.— ■ Troschel, Arch, fiir Nat., V, 1839, Pt. 2, p. 234.— 

 *Hani.ey, Test. Moll., 1842, p. 199; ■ Biv. Shells, 1843, p. 199, pi. xxii, fig. 

 47. — * Catlow aud Reeve, Conch. Nom., 1845, p. 60. — * Conrad, Pr. Ac. N. 

 Sci. Phila., VI, 1853, p. 251.—* H. and A. Adams, Gen. Rec. Moll., II, 1857, p. 

 493.—* Kuster, Conch. Cab. Unio, 1862, p. 265, pi. xc, fig. 1.—* ?Sowerby, 

 Conch. Icon., XVI, 1868, pi. lxviii, fig. 347.2— *B. H. Wright, Check List, 

 1888.— P.ETEL, Couch. Sara., Ill, 1890, p. 155. 



* Margarita (Umo)jejumis Lea, Syn., 1836, p. 30; 1838, p. 22. 



* Margaron (Unio) jejunus Lea, Syn., 1852, p. 32; 1870, p. 51. 



*]Unio jpercoarctaius Lea, Pr. Ac. N. Sci. Phila., I, 1857, p. 85; *J1. Ac. N. Sci. 

 Phila., V, 1862, p. 59, pi. in, fig. 206 ; * Obs., VIII, 1862, p. 63, pi. in, fig. 206.— 

 ''Sowerby, Conch. Icon., XVI, 1866, pi. liv, fig. 277.—* B. H. Wright, Check 

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



* Margaron ( Unio) percoarctatus Lea, Syn., 1870, p. 51. 



t UNIO COMPLANATUS var. QUADRILATERUS Lea. 



* Unio squalidm Lea, iu part, Pr. Ac. N. Sci. Phila., VII, 1863, p. 192; Jl. Ac. N. Sci. 



Phila., VI, 1866, p. 22, pi. vn, fig. 20; Obs., XI, 1867, p. 26, pi. vn, fig. 20.— *B. 

 H. Wright, Check List, 1888.—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, p. 429, 

 pi. LXXI, tig. 14. 

 ^Margaron (Unio) squalidus Lea, Syn., 1870, p 51. 



* t Unio quadrilaterus Lea, Pr. Ac. N. Sci. Phila., VII, 1863, p. 192; Jl. Ac.N. Sci. 



Phila., VI, 1866, p. 5, pi. i, fig. 1; Obs., XI, 1867, p. 9, pi. i, fig. 1.— * B. H. 

 Wright, Check List, 1888. 

 *' Margaron ( Unio) quadrilaterus Lea, Syn., 1870, p. 51. 



Atlantic drainage from the St. Lawrence to Georgia; west in tlie 

 Britisli possessions to Manitoba? 



tUNIO CATAWBENSIS Lea. 



* Unio wheatleyi Lea, Pr. Ac. N. Sci. Phila., 1857, I, p. 85 ;^ * Jl. Ac. N. Sci. Phila., 



V, 1861, p. 54, pi. I, fig. 200; Obs., VIII, p. .58, pi. i, fig. 200.—* B. H. Wright, 

 Check List, 1888.— *P.etel, Conch. Sam., Ill, 1890, p. 147. 



* Margaron ( Unio) catawhensis Lea, Syn., 1870, p. 52. 



1 Said to come from Yamaska River, China. The type is a twisted Unio complanatus, 

 probably from Canada. 



^In errata he savs this is depressus of d'Orbigny, not Lamarck. It is hard to say 

 what it is. 



3 Preoccupied by Lea aud changed by him to cataivhensis. 



