1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo: 383 
Unio kunenensis Mousson, 1887, Journ. de Conchyl., XX XV, p. 300, Pl. x11, 
fig. 10. Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 586. Branch of the Cunene 
River in Northern Ovamboland. Placed by Simpson in Cafferia. 
Unio (Nodularia) lacoint German, 1906, Mém. Soc. Zool. France, XIX, p. 237, 
Pl. tv, figs. 11 and 12= Nodularia (Celatura) lacoini Stmpson, 1914, ‘Descript. Cat. 
of Naiades,’ p. 1028. Northeastern shore of Lake Chad at Kanassarom. In the 
original description it is stated that the species is composed of the two varieties 
elongata and curta. Later Germain (1908, in A. Chevalier, ‘L’ Afrique Centrale 
Frangaise,’ p. 545) stilladds a var. compressa. None of these varieties have, however, 
been formally described. 
Unio lacoint var. chudeaut GERMAIN, 1909, Bull. Mus. Hist. Nat. Paris, p. 541 =. 
Nodularia lacoint var. chudeaui Stimpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1029. 
Lake Chad at N’Guigmi. 
Unio lavigerianus Bourguignat. See p. 409. 
Unio lechaptoist ANcEY, 1894, Mém. Soc. Zool. France, VII, p. 228, fig. =No- 
dularia (?) lechaptoisi Stmupson, 1914, ‘Descript. Cat. of Naiades,’ p. 1037. Unio 
shireensis PrEsTON, 1910, Ann. Mag. Nat. Hist., (8) VI, p. 61, Pl. 1v, fig. 11. Simp- 
son, 1914, ‘Descript. Cat. of Naiades,’ p. 727. Shiré River, 3 kilometers south of 
Lake Nyasa (type locality of both U. lechaptoisi and U. shireensis). The synonymy 
has been pointed out by Dupuis, 1923, Ann. Soc. Zool. Belgique, LITT, (1922), p. 82. 
Unio lechaptoist var. minor E. v. Martens, 1897, ‘Deutsch Ost Afr., IV, Be- 
schalte Weichth.,’ p. 227. Mbampa and Amelia Bays, Lake Nyasa. 
Unio ledoulxianus CHARMES, 1885, Bull. Soc. Malacol. France, II, p. 173 =No- 
dularia ledoulxiana Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 982. Kingani 
River at Bagamoyo. 
Parreysia leopoldvillensis (Putzeys). See p. 390. 
Unio liederi FE. v. Martens, 1897, ‘Deutsch Ost Afr., IV, Beschalte Weichth..,’ 
p. 226, Pl. vir, fig. 19 = Nodularia (Cxlatura) liederi Stmpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1037. Mbampa Bay in Lake Nyasa and Ulanga in the upper Rufiji 
region. 
Parreysia lobensis Frimrson, 1913, The Nautilus, X XVII, p. 85, Pl. v (lower 
figures). Lobo River, Cameroon (named loboensis on the plate). 
Parreysia lourdeli (Bourguignat). See p. 394. 
Unio mandinguorum A. T. DE RocHEBRUNE, 1882, Bull. Soc. Philomath. Paris, 
(7) VI, p. 34. Smmpson, 1914, ‘Descript. Cat. Naiades,’ p. 584 = Nodularia mandin- 
goensis KoBELT, 1909, Abh. Senckenberg. Naturf. Ges., XXXII, p. 85. Bakoy River, 
Senegal. Placed doubtfully in Cafferia by Simpson. 
' Unio mashone Preston, 1910, Ann. Mag. Nat. Hist., (8) VI, p. 61, Pl. rv, fig. 10. 
Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 578. About 16 miles from Enkeldoorn, 
Southern Rhodesia. Placed by Simpson in Cafferia. 
Unio menardi Bourguignat. See p. 409. 
Unio meneliki ‘“Soleillet’’ Bourauienat, 1885, ‘Moll. Choa,’ p. 41. Hauash 
River, Abyssinia. 
Cexlatura mesafricana Pilsbry and Bequaert. See p. 402. 
Pharaonia misraimica “Bourguignat’’? Servatn, 1890, Bull. Soc : Malacol. 
France, VU, p. 290. ‘‘Canal de l’usine des eaux & Suez.”’ 
Unio moineti Bourguignat. See p. 409. 
