¥ 
1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 429 
Mutela complanata var. curta (Germain) =Mutelina complanata var. curta 
GERMAIN, 1907, Bull. Mus. Hist. Nat. Paris, p. 68. Spatha complanata var. curta 
Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1344. Chari River. This name is 
preoccupied by Mutela angustata var. curta Germain, 1906. 
Mutela complanata mut. abbreviata (Germain) =Mutelina complanata mut. 
abbreviata GERMAIN, 1908, in A. Chevalier, ‘L’ Afrique Centrale Frangaise,’ p. 573. 
Chari River. 
Mutela complanata mut. elongata (Germain) =Mutelina complanata mut. 
elongata Germain, 1908, in A. Chevalier, ‘L’Afrique Centrale Frangaise,’ p. 573. 
Chari River. 
Mutela dubia (Gmelin). See p. 430. 
Mutela emint (E. v. Martens). See p. 485. 
Mutela falemeensis (Germain) Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 
1362 = Mutelina falemeensis GERMAIN, 1907, Bull. Hist. Nat. Paris, p. 67; 1908, in A. 
Chevalier, ‘L’ Afrique Centrale Frangaise,’ p. 569, fig. 96. Faleme River, Senegambia. 
Mutela garambe Pilsbry and Bequaert. See p. 431. 
Mutela garambe pretenuis Pilsbry and Bequaert. See p. 482. 
Mutela hargert E. A. Smith. See p. 434. 
Mutela iris Pilsbry and Bequaert. See p. 434. 
Mutela joubint (Germain). See p. 4386. 
Mutela langi Pilsbry and Bequaert. See p. 482. 
Mutela lavigeriana Bourguignat. See p. 436. 
Mutela thotelleriana Preston, 1909, Ann. Mag. Nat. Hist., (8) IV, p. 89, Pl. rv, 
fig. 6. Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1364. Gaboon. 
Mutela mabilli (A. T. de Roehebrune). See p. 483. 
Mutela mabilli var. frast (Germain) Stimpson, 1914, ‘Descript. Cat. of Naiades,’ 
p. 13861 = Mutelina mabillet var. frasi GeRMAIN, 1907, Bull. Mus. Hist. Nat. Paris, 
p. 68; 1908, in A. Chevalier, ‘L’ Afrique Centrale Frangaise,’ p. 570, fig. 97. Uassulu, 
Niger River. 
Mutela mabilli var. gaillardi (Germain) Simpson, 1914, ‘Descript. Cat. of 
Naiades,’ p. 1361 = Mutelina mabillet var. gaillardi GERMAIN, 1909, Bull. Mus. Hist. — 
Nat. Paris, p. 477; 1911, ‘Doc. Scientif. Miss. Tilho,’ II, p. 214, Pl. 111, figs. 5-6. 
Lake Chad. 
Mutela monceti Bourguignat. See p. 4386. 
Mutela nilotica (Cailliaud). See p. 436. 
Mutela nilotica var. moineti (Bourguignat). See p.. 437. 
Mutela opalescens Preston, 1910, Ann. Mag. Nat. Hist., (8) VI, p. 62, Pl. tv, 
fig. 12. Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1365. Shiré River, 3 to 4 
kilometers south of Lake Nyasa. This appears to be the same as M. simpsoni Ancey. 
Mutela oudnoei (Koenig) =Iridina oudnoet Kania, 1826, in Denham and Clap- 
perton, ‘Narrative of Trav. and Discov. in N. and Centr. Africa, Appendix,’ p. 254. 
‘“Gammaroo River” (this appears to be Gambaroo, a locality on the Yaou or Yo 
River). This species has usually been synonymized with nilotica, but it seems im- 
probable that such is the case; in our opinion it is more closely related to M. dubia. 
Mutela plicata (E. v. Martens) =Spatha (Mutela) plicata “Parreyss’”’ E. v. 
Martens, 1866, Malakoz. Blatter, XIII, p. 10. Mycetopus plicatus SowERBY, 1868, 
‘Conchol. Iconica,’ XVI, Mycetopus, Pl. 11, fig. 3. Mutela (Pseudomutela) plicata 
Simpson, 1914, ‘Descript. Cat. of Naiades,’ p. 1363. Egypt. 
