1. Nodularia douglasiae Griffith et Pidgeon. 
Taf. 6, Fig. 1—10. 
Unio douglasiae Griffith et Pidgeon, Cuviers Animal Kingdom, English Edition, Mol- 
lusca and Radiata, by Griffith and Pidgeon, 1834, p. 601 (Index!), T. 21, 
fig. 2. 
Unio murchisonianusLea, Transact. Am. Phil. Soc., V, 1834, p. 33, T. 3, fig. 6; Obs., I., 
1834, p. 115,T. 3, fig. 6. — Hanley, Test. Moll., 1842, p. 177; Biv. Shells, 
1843, p. 177, T. 21, fig. 53. — Catlow and Roeve, Conch. Nom., 1845, 
p- 61.— Küster, Martini-Chemnitz, Conch. Cab. Unio, 1856, p. 166, T.48, 
fig. 3—4. — H. and A. Adams, Gen. Rec. Moll. II, 1857, p. 497. — 
Chenu, Man., 1859, II, p.142, fig. 701. — Sowerby, Conch. Icon., XVI, 
1866, T. 38, fig. 207. —!Paetel, Cat. Conch. Samml., 111, 1890, p 160. — 
v. Ihering, Abh. Senckenb. Nat. Ges., XVIII, 1893, p. 159. 
Margarita (Unio) murchisonianus Lea, Synopsis, 1836, p. 14; 1838, p. 14. 
Margaron (Unio) murchisonianus Lea, Synopsis, 1852, p. 21; 1870, p. 32. 
Unio osbecki Philippi, Zeitschr. f. Mal., 1845, p. 164; Abbild. u. Beschr. neuer o. wenig 
gek. Conch., III, 1847, p. 45, T. 3, fig. 1. — H. & A. Adams, Gen. Rec. 
Moll., II, 1857, p. 497. — Küster, Martini-Chemnitz, Conch. Cab. Unio, 
1861, p. 236, T. 79, fig. 3. — Sowerby, Conch. Icon. XVI, 1868, T. 69, 
fig. 353. — Paetel, Cat. Conch. Samml. III, 1890, p, 162. 
Margaron (Unio) osbecki Lea, Synopsis, 1852, p. 21; 1870, p. 32. 
Unio nux-persicae Dunker, Zeitschr. f. Mal,, 1848, p. 83. — Musgrave, Phot. Conch., 
1863, T..1, fig. 10. — Sowerby, Conch. Icon., XVI, 1868, T.73, fig. 373. 
— Paetel, Catal. Conch. Sammi., III, 1890. p. 161. 
Margaron (Unio) nux-persicus Lea, Synopsis, 1870, p. 32. 
Unio wrightii Lea, Proc. Acad. Nat. Science, Philadelphia, IX, 1865, p. 75; Journal. Acad. 
Nat. Seience, Philadelphia, VI, 1868, p. 283, T.39, fig. 97; Obs., XII, 1869, 
p. 43, T. 39, fie. 97. 
Margaron (Unio) wrightii Lea. Synopsis. 1870, p. 32. 
Unio sculptus Deshayes, Bull. Nouv. Arch. Mus., IX, 1873, p. 9, T. 1, fig. 3, 3a. — 
Heude, Conch. Fluv. Nanking., III. 1877, T. 24, fig. 5l. — Paetel, 
Catal. Conch. Samml., III, 1890, p. 167. 
Unio dactylinus Heude, Conch. Fluv. Nanking, I, 1885, T. 65. 
Unio pietorum var. lJongirostris Westerlund, Kong. svensk. Vet. Akad, Handl,, XV, 
No. 12, p. 74. 
Unio pietorum var. amurensis Mousson, Journ. de Conch., XXXV, 1887 p. 26, T. 1, 
fig. 8. 
Unio abbreviatus Westerlund, Annuaire du Mus. Zool. de l’Acad. imp. St. Petersburg, 
3 1897, p. 132. 
