NO. 1205. SYNOPSIS OF THE NAIADES— SIMPSON. 715 



VI, 1866, p. 18, pi. V, fig. 16 ; Obs., XI, 1867, p. 22, pi. v, fig. 16.— * B. H. Wright, 

 Check List, 1888. 



* Margaron ( Unio) perlueens Lka, Syn., 1)^70, p. i^. 



ISTorth Carolina to South Georgia aud Morida. 



tUNIO PYGM/EUS Lea.' 



* Unio pygmwus Lea, Pr. Am. Phil. Soc, V, 1852, p. 2.52; * Tr. Am. Phil. Soc, X, 



1852, p. 262, pi. XV, fig. 14; * Obs., V, 1852, p. 18, pi. w, fig. 14; * Conrad, 

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



* Mar(jaron{ Unio) pygmceus Lea, Syn., 1870, p. 48. 



Abbeville District, South Carolina. 



tUNIO LEHMANII, S. H. Wright. 



* Unio lehmanii, S. H. Wright, Naut., X, 1897, p. 138. — * Simpson, Pr. Acad. N. 



Sci. Phila., 1900, p. 80, pi. iv, fig. 9. 



St. Marys River, Florida. 



tUNIO BURTCHIANUS S. H. Wright. 



* Unio iurtchianus S. H. Wright, Naut., X, 1897, p. 137. — " Simpson, Pr. Ac. N. Sci. 



Phila., 1900, p. 80, pi. iv, fig. 8. 



St. Mary's River, Florida. 



tUNIO CONFERTUS Lea.^ 



* Unio luguh'is Lea, Tr. Am. Phil. Soc, VI, 1834, p. 30, pi. ix, fig. 25 ; * Obs., II, 1838, 



p. 30, pi. IX, fig. 25.— * Troschel, Arch, fiir Naturg.,V, 1839, Pt. 2, p.235.— 

 *Hanley, Test. Moll., 1842, p. 206; *Biv. Shells, 1843, p. 206, pi. xxii, fig. 9.— 

 *Chenu, Bib. Conch., Ist ser., Ill, 1845, p. 53, pi. xv, figs. 1, la. — ' Catlow and 

 Reeve, Conch. Norn., 1845, p. 60.— * Conrad, Pr. Ac. N. Sci. Phila., VI, 1853, 

 p.252.— *H. and A. Adams. Gen. Eec. Moll., II, 1857, p. 491.— *Chenu, 111. 

 Conch., 1858, pi. xx, figs. 3, 3a, 3&.— ^ Sowerby, Conch. Icon., XVI, 1868, 

 pi. Lxxx, fig. 423.— " B. H. Wright, Check List, 1888.—^^ P.etel, Conch. Sara., 

 Ill, 1890, p." 158.—* Simpson, Pr. U. S. Nat. Mus., XV, 1892, p. 424, pi. lxvi, 

 fig. 4; Lxvii, fig. 1. 



* Margarita (Unio) lugubris Lea, Syn., 1836, p. 37; 1838, p. 24. 



* Margaron ( Unio) lugubris Lea, SynJ, 1852, p. 38; 1870, p. 53. 



* t Unio confertus Lea, Tr. Am. Phil. Soc, V, 1834, p. 103, pi. xvi, fig. 47; * Obs., I, 



p. 215, pi. XVI, fig. 47. — * Ferussac, Guer. Mag., 1835, p. 29. — * Hanley, Test. 

 Moll., 1842, p. 200 ; * Biv. Shells, 1843, p. 200, pi. xxiii, fig. 34.—* Catlow and 

 Eeeve, Conch. Nom., 1845, p. 57. — *II. and A. Adams, Gen. Eec. Moll., II, 

 1857, p. 493.—* Sowerby, Conch. Icon., XVI, 1866, pi. xxxv, fig. 185.— *B. H. 

 Wright, Check List, 1888.—* P.etel, Conch. Sam., Ill, 1890, p. 148. 



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



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



* t Unio geddingsianus Lea, Pr. Am. Phil. Soc. 1, 1840, p. 285; * Tr. Am. Phil. Soc, 



VIII, 1842, p. 202, pi. XI, fig. 15 ; * Obs., Ill, 1842, p. 40, pl.xi, fig. 15.—* Conrad, 

 Pr. Ac. N. Sci. Phila., VI, 1853, p.250.— *H. and A. Adams, Gen. Eec. Moll., II, 

 1857, p. 493.—* Chenu, 111. Conch., 1858, pi. xxxi, figs. 3, 3a, dh.—" B. H. 

 Wright, Check List, 1888.—* Pjstel, Conch. Sam., Ill, 1890, p. 153. 



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



1 Only a single broken right valve of this is in the Lea collection. 



2 The name lugubris applied first to this species will have to give way to confertus 

 because Say used lugubris at an earlier date for a Unio. 



