380 Bulletin American Museum of Natural History [Vol. LII! 
Unio (Nodularia) chivoti Germain, 1907, Bull. Mus. Hist. Nat. Paris, p. 66; 
1908, in A. Chevalier, ‘L’ Afrique Centrale Frangaise,’ p. 542, Pl. v, fig. 23 = Nodu- 
laria (?) chivott Stupson, 1914, ‘Descript. Cat. of Naiades,’ p. 1038. Mamun River, 
in the Senussi country, French Equatorial Africa. 
Unio choziensis Preston, 1910, Ann. Mag. Nat. Hist., (8) VI, p. 60, Pl. rv, fig. 8. 
Srmpson, 1914, “Descript. Cat. of Naiades,’ p. 726. Chozi River, a tributary of the 
Chambezi River, Northeast Rhodesia. This appears to be hardly distinct from Par- 
reysia mweruensis (E. A. Smith). Placed doubtfully in Unio by Simpson. 
Unio (Cafferia) connollyi Pitspry, 1923, Proc. Ac. Nat. Sci. Philadelphia, LXXYV, 
p. 276, fig. 1, Pl. xrx, figs. 3-4=Cafferia caffra obesa CONNOLLY, 1925, Rec. Albany 
Mus., III, p. 261, Pl. xu, figs. 3,5. Port Natal. 
Nodularia cronine B. WALKER, 1922, The Nautilus, XXXVI, p. 5, Pl. 1, figs. 2 
and 3. Zambezi River, at Mongu Sealu in the Barotse Valley, Northern Rhodesia. 
Unio cyamus Puiuirri, 1851, Zeitschr. f. Malakoz., VIII, p. 125. South Africa. 
Unio decampsianus WATTEBLED, 1884, Journ. de Conchyl., XXXII, p. 132, PI. 
vu, fig. 1=Nodularia (Celatura) decampsiana Stmeson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1026. Unio campsianus Pmre., 1890, ‘Cat. Conch. Samml.,’ ITI, p. 
147. Niger River at Bamako. 
Unio dembex ‘‘Rossmiassler’? SowERBY, 1865, ‘Conchol. Iconica,’ XVI, Unio, 
Pl. xxrx, fig. 153. Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 580 = Unio dembea 
BourcuiGnat, 1885, ‘Moll. Choa,’ p. 38. Lake Tsana, Abyssinia. Placed by Simp- 
son in Cafferia. 
Unio diminutus I. Lea, 1859, Proc. Ac. Nat. Sci. Philadelphia, XI, p. 151 
(diminutis); 1860, ‘Observ. Unio,’ VII, p. 72. Pl. xxxrx, fig. 134. Simpson, 1914, 
‘Descript. Cat. of Naiades,’ p. 583=Unio gratiosus ‘“Parreiss’’ Ktister, 1848, in 
Martini and Chemnitz, ‘Syst. Conch. Cab., [X, 2, Flussperlmuscheln,’ p. 239, PI. 
LXxx, fig. 3 (described from New Holland, but, according to Jickeli, from the Nile 
and the same as U. gracilis Parreyss). Unio gracilis “‘ Parreyss ’ JIcKELI, 1874, Nova 
Acta Ac. Nat. Cur. Dresden, XX XVII, 1, p. 280 (as a synonym of U. diminutus I. 
Lea). East Africa. Placed by Simpson in Cafferia. 
Zaria disciformis A. T. DE ROoCHEBRUNE, 1886, Bull. Soc. Malacol. France, IIT, 
p. 10= Nodularia (?) disciformis Stpmson, 1914, ‘ Descript. Cat. of Naiades,’ p. 1045. 
Mokaka, French Cengo. 
Unio dumesnilianus CHARMES, 1885, Bull. Soc. Malacol. France, II, p. 168 = Unio 
dumesleanus Stimpson, 1900, Proc. U.S. Nat. Mus., XXII, p. 847; 1914, ‘Descript. 
Cat. of Naiades,’ p. 1130. Kingani River, Tanganyika Territory. Placed doubtfully 
in Parreysia by Simpson. | 
Unio dupontt A. T. DE RocHEBRUNE, 1882, Bull. Soc. Philomath. Paris, (7) VI, 
p. 34=Nodularia (?) duponti Stwpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1038. 
Bakoy River, Senegal. 
Celatura elegans (A. T. de Rochebrune). See p. 400. 
Nodularia (Cxlatura) ellenbergeri GuRMAIN, 1920, Bull. Mus. Hist. Nat. Paris, 
p. 242, figs. 36 and 37. District of Lealui, Upper Zambezi, Northern Rhodesia. 
Unio emint KE. v. Marrens, 1897, ‘Deutsch Ost Afr., IV, Beschalte Weichth..,’ 
p. 224, Pl. vit, fig. 14 = Nodularia (Czlatura) emini Simpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1035. Simin River near Massansa on the Speke Gulf of Lake Victoria. 
Umio (Nodularia) erlangeri Kopnur, 1909, Abh. Senckenberg. Naturf. Ges., 
XXXII, p. 49, Pl. x, fig. 8=N dularia (?) erlangeri Simpson, 1914, ‘Descript. 
Cat. of Naiades,’ p. 1042. Somaliland. 
