WOU.) H. B. Preston: The Asiatic Natades. 285 
Bourguignat, Test. Nov., 1852, p. 28; Cat. Rais., 1853, pl. iv, 
figs. I—3,—=Pseudodon euphratica, Conrad, Am. Jl. Conch. I, 1865, 
p. 233,—Margaritana euphratica, von Martens, Vorderas. Conch. , 
1874; Kobelt, Icon., new ed., II, 1886, p. 26, pl. xlv, fig. 266,— 
Leguminaia euphratica, Westerlund, Faun. Pal., II, Pt. 7, 1890, 
p. 188,=Unio churchillianus, Sowerby, Conch. Icon., XVI, 1868, 
pl. xevi, fig. 526. 
Bagdad, Reg. No. #282. 
Gen. Solenaia, Conrad, 1868. 
16. Solenaia soleniformis (Benson), Simpson,Syn. Naiades, 
Proc. U.S. Nat. Mus., XXII, p. 656,—Avnodonta soleniformis, 
Benson, Journ. As. Soc. Beng., V, 1836, p. 750,—Spatha solent- 
formis, Hanley and Theobald, Conch. Ind., pl. ix, fig. 1,=Myce- 
topus solentformis, Fischer, J1. de Conch., XX XVIII, 1890, p. 94,—= 
Margaron (Unio} bensoni, Lea, Syn., 1870, p. 57,—=Mycetopus 
bensontanus, Paetel, Conch. Sam. III, 1890, p. 186. 
achat, Rea: Noss 4700 sss, s060. 
Gen. Margaritana, Schumacher, 1817. 
17. Margaritana margaritifera (Linnaeus), Schumacher, 
Ess. Nouv. Syst., 1, 1817, p. 124, pl. x, fig. 4; Simpson, Syn. Naiades, 
Proc. U.S. Nat. Mus., XXII, p. 674—677, etc.,—Mya margariti- 
jera, Lister, Hast: ‘Anim. Ang: App., 1805, -pl. 1, fig. 1, etc..—= 
Mya margaritifera, testa ovalt oblonga, etc.,—Moller, Zool. Danicae, 
1776, p: 245; Chemnitz, Conch. Cab-. VI, 1782, p. 15, pl. i, fig. 5, 
=Baphiae margaritifera, Meuschen, Mus. Gevers., 1787, p. 472,= 
Unio margaritifera, Drapernaud, Tab. Moll. Fr., 1801, p. 107; 
Bist. Moll Fr 1606, p. 132, pl. xvfies: 17—19, pl.. xi, fig. 5? 
etc.,=Alasmodonta margaritifera, Conrad, New F. W. Shells, 1834, 
p. 72,=Marganita (Margaritana) margantifera, Lea, Syn., 1836, 
p. 45; 1838, p. 28,—Margaron (Marganitana) margaritifera, Lea, 
Syn., 1852, p. 43; 1870, p. 690,—Baphia margaritifera, H. & A. 
Adams, Gen. Rec. Moll, Wr 1657, p. 490; II], pl. cxvit, figso2; 
2a,—Unio margantiferus, Retzius, Dis. S. Hist. Nat., 1788, p 16; 
Spengler, Skriv. Nat. Selsk., III, 1793, p. 52; Turton, Conch. Ins. 
Brit., 1822, p. 241, pl. xvi, fig. 1,=Alasmodon marganitferus, 
Brower. ebony. (Cones. 1630) Pp. 112, pl. xx fea seanr 
xxii, figs. 1, 3,—Margaritana margaritiferus, Westerlund, Faun. 
Pal., II, Pt. 7, 1890, p. 184,—Alasmodon marganitiferum, Fleming, 
Hist. Brit. Moll., 1828, p. 417,—Unio margaritufer var. minor, 
RossmasslerIcom., Pt.+2, 1835, p. 19, pl. ix, fig’ 129,—Umo 
margaritifer, Kiister, Conch. Cab., 1856, p. 130, pls. xxxviii, 
xxxix,—Unio (Margaritana) margaritifera, Schrenck, Reis. und 
F. in Amur Lande, II, 1867 ? p. 700,=Unto auricularius, Spengter, 
Skriv. Nat. Selsk., III, 1793, p. 44,—Unto elongata, Lamarck, 
An. sans. Vert., VI, 1819, p. 70,=Damaris elongata, Leach, Syn. 
Moll. Gt. Brit., 1852, p. 322,—Margaritana elongata, Westerlund, 
