384 Bulletin American Museum of Natural History [Vol. LITI 
Unio moncetti Bourcuienat, 1883, ‘Moll. Fluv. Nyanza Oukéréwé, p. 15, PL., 
figs. 13-15. Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 582. Lake Victoria near 
the mouth of the Liwumbu River. Placed by Simpson in Cafferia. 
Unio monceti var. rubra GERMAIN, 1906, Bull. Mus. Hist. Nat. Paris, p. 306. 
Lake Victoria, near Entebbe. } 
Unio mossambicensis “Peters” EH. v. Marrens, 1860, Malakoz. Blatter, VI, p. 
218, Pl. 111, figs. 3-5 = Nodularia mossambicensis Simpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 986. Zambezi River near Tete. 
Umo multicolor E. v. Marrens, 1897, ‘Deutsch Ost Afr., IV, Beschalte Weichth., 
p. 236, Pl. vit, fig. 4 = Parreysia multicolor Simpson, 1914, ‘Descript. Cat. of Naiades,’ 
p. 1129. Lake Victoria, near Sirwa Island and near Bukoba. 
Unio mutelxformis GERMAIN, 1906, Mém. Soc. Zool. France, XIX, p. 236; 1908, 
in A. Chevalier, ‘L’Afrique Centrale Frangaise,’ p. 540, Lith. Pl., figs. 8 and 4= 
Parreysia mutelzformis Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1135. Lake 
Chad. : 
Unio muteleformis var. chariensis GERMAIN, 1906, Mém. Soc. Zool. France, XIX, 
p. 236=Parreysia muteleformis var. chariensis Simpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1136. Mamun River, French Equatoriql Africa. 
Parreysia mweruensis (E. A. Smith). See p. 392. 
Unio mysticus “ Bourguignat”’ Patuary, 1903, Bull. Inst. Egyptien, (4) III, 
(1902), p. 94, Pl. 11, fig. 3= Nodularia (Czlatura) mystica Simpson, 1914, ‘Descript. 
Cat. of Naiades,’ p. 1022. Upper Nile and canal near Suez. 
Unio natalensis I. Lea, 1864, Proc. Ac. Nat. Sci. Philadelphia, XVI, p. 113; 
1866, “Observ. Unio,’ p. 68, Pl. xx, fig. 57 = Unio vaalensis CuHaAPER, 1885, Bull. Soc. 
Zool. France, X, p. 480, Pl. x1, figs. 1-3 (type locality: Vaal River nea> Barkly, 
Griqualand West). Unio (Cafferia) caffer var. vaalensis Simpson, 1914, ‘Descript. 
Cat. of Naiades,’ p. 576. Umpingave River, Natal. 
Parreysia ngesiana (E. v. Martens). See p. 389. 
Unio (Nodularia) nguigmiensis Germain, 1909; Bull. Mus. Hist. Nat. Paris, 
p. 540, fig. 40= Nodularia (Czlatura) nguigmiensis Simpson, 1914, ‘Descript. Cat. 
of Naiades,’ p. 1029. Lake Chad, at N’Guigmi. | 
Unio niloticus CarLLIauD, 1827, ‘Voyage A Méroé,’ IV, p. 263; 1823, Atlas, II, 
Pl. Lx1, figs. 8 and 9 = Nodularia (Cxlatura) nilotica Simpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1020. Canal of Joseph and other canals of Lower Egypt. Unio pumilus 
“Ziegler” JicKELI, 1874, Nova Acta Ac. Nat. Cur. Dresden, XXXII, 1, p. 272 (in the 
Synonymy of U. niloticus). 
Parreysia nyangensis FRIERSON, 1913, The Nautilus, XX VII, p. 86, Pl. v (upper 
figures). Nyang River, Cameroon. 
Unio nyassaensis I. Lea, 1864, Proc. Ac. Nat. Sci. Philadelphia, XVI, p. 108; 
1866, ‘Observ. Unio,’ XI, p. 37, Pl. XII, fig. 32 = Parreysia nyassaensis Simpson, 1914, 
‘Descript. Cat. of Naiades,’ p. 1132. Unio nyasse Sowxrrsy, 1866, ‘Conchol. 
Iconica,’ XVI, Unio, Pl. x11, figs. 224a-b. Unio nyassensis SOWERBY, 1868, op. cit., 
in Errata and Index. Unio nyassanus BourGauiIanat, 1889, Bull. Soc. Malacol. 
France, VI, p. 38. Lake Nyasa. 
Unio nyassaensis var. hercules Preston =Unio (Nodularia) nyassanus var. 
hercules Preston, 1913, Rev. Zool. Afric., III 1, p. 59, Pl. tv, fig. 10. Shiré River, 
near its outflow from Lake Nyasa. 
