1927] Pulsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 381 
Unio essoensis CHAPER, 1885, Bull. Soc. Zool. France, X, p. 481, Pl. x1, figs. 8 
and 9=Noduliria (Celatura) essoensis Stimpson, 1914, ‘Descript. Cat. of Naiades,’ 
p. 1025. Essoi River, Assinie, Ivory Coast. 
Unio (Nodularia) essoensis var. minor GERMAIN, 1906, Bull. Mus. Hist. Nat. 
Paris, p. 172=Nodularia essoensis var. minor SEEM, 1914, "Descript. Cat. of 
Nodades! p. 1026. Kanem, Lake Chad. 
Unio euphymus CHARMES, 1885, Bull. Soc. Malacol. France, II, p. 171. Simp- 
son, 1914, ‘Descript. Cat. of Naiades,’ p. 1130 (placed doubtfully of Parreysia). 
Kingani River, Tanganyika Territory. 
Unio eurysellinus “‘ Letourneux”’ Pauuary, 1903, Bull. Inst. Egyptien, (4) ITI, 
(1902), p. 94, Pl. 11, fig. 4 = Nodularia (Cexlatura) eurysellina Simpson, 1914, ‘ Descript. 
Cat. of Naiades,’ p. 1022. Mahmoudich Canal, Lower Egypt; also said to occur in 
the White Nile. This appears to be very close to U. rugifer Kiister. 
Reneus faidherbet JOUSSEAUME, 1886, Bull. Soc. Zool. France, XI, p. 483, Pl. x11, 
figs. 5-5a. Bakoy River, Senegal. 
Uniofayumensis PiInsBry AND BEQUAERT, new name for Unio schweinfurthi E. 
v. Martens, 1886, Sitz. Ber. Ges. Naturf. Fr. Berlin, p. 127. Fay(Qm basin, near 
Adue, Egypt. Not U. parreyssi var. schweinfurtht E. v. Martens, 1876. 
Unio Hyridella) fissidens O. Barrranr, 188‘, Ber. Senckenberg. Naturf. Ges., 
Abh., p. 27, Pl. 1, figs. €a-b and 7a-b=Unio (Cafferia) fissidens Simpson, 1914, 
‘Dasenini Cat. of esas p. 584. Dirk Filander’s region, Southern Kalahari 
(subfossil). 
Unio forscali ‘‘Parreyss” Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1192 
(without description or reference). Egypt. 
Reneus fouladougouensis JOUSSBAUME, 1886, Bull. Soc. Zool. France, XI, p. 485, 
Pl. x11, figs. 6-6a=N dularia (Celatura) fouladougouensis Simpson, 1914, ‘ Descript. 
Cat. of Naiades,’ p. 1030. Nodularia faladuguensis Kope.t, 1909, Abh. Senckenberg. 
Naturf. Ges., XX XII, p. 84. Niger River at Fuladugu. 
Indonaia framesi ConNOLLY, 1925, Rec. Albany Mus., III, p. 261, Pl. xu, figs. 
1, 4. : 
Unio gabonensis Kiisrer, 1843 (?, or 1862), in Martini and Chem itz, ‘Syst. 
Conch. Cab., IX, 2, Flussperlmuscheln,’ p. 291, Pl. xevtt, fig. 7 = Nodularia (Cezlatura) 
gabonensis Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1031. Gaboon. 
Unio (Nodularia) gaillardi GerMatn, 1909, Bull. Mus. Hist. Nat. Paris, p. 542, 
Pl. viu, figs. 41 and 42=Nodularia (?) gaillardi Stmpson, 1914, ‘Descript. Cat. of 
Naiades.’ p. 1041. Senegal. 
Nodularia (Cexlatura) gaillardoti ‘“‘Bourguignat’”’ Pauuary, 1909, Mém. Inst. 
Egyptien, VI, p. 78, Pl. v, figs. 7 and 8. Based upon Unio xgyptiacus var. JICKELI, 
1874, Nova Acta Ac. Nat. Cur. Dresden, XX XVII, 1, Pl. x, figs. 5a-b. Egypt. 
Cexlatura gereti (Preston). See p. 407. 
Celatura gerrardi (E. v. Martens). See p. 402. 
Unio guillemett Bourguignat. See p. 409. 
Unio hamyanus BourRGUIGNAT, 1885, ‘Voy. Choa,’p. 42. Lake Haussa, Abyssinia. 
Unio hautteceuri BourcuiGNat, 1883, ‘Moll. Fluv. Nyanza Oukéréwé,’ p. 5, 
Pl., figs. 1-3 =Parreysia hautteceuri Simpson, 1914, ‘Descript. Cat. of Naiades,’ p 
1126. Unio edwardsianus BourauicNnat, 1883, ‘Moll. Fluv. Nyanza Oukéréwé,’ p. 
12, Pl., figs. 7-9. Unio gran'ianus Bourcuianart, 1883, op. cit., p. 14. Unio grandidvert 
Bovacon ae 1883, op. cit., p. 7, PL, figs. 4-6. Unio duponti Bourauienat, 1883, 
