1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo » 231 
Syrnolopsis lacustris molirensis, new subspecies 
Text Figures 26h and 27c, d 
Off Moliro, in 70 mm. (L. Stappers Coll.) and at Moliro (Pillette 
Coll.); in Lake Tanganyika. ‘ 
The shell has a thin, cinnamon-buff periostracum, slightly paler below the suture 
and at the base. The peristome is entire, the outer lip moderately thickened, deeply 
sinuate above and at the base, which is conspicuously effuse. Inner lip strongly 
thickened. Columellar fold rather small and immersed, scarcely or not visible in a 
direct face view. ae 3 
Length, 10.8 mm.; diameter, 3.6 mm.; length of aperture, 3.8 mm.; 9 whorls. 
Type. | | | 
Length, 11.8 mm.; diameter, 3.6 mm.; 10 whorls. Paratype. 
Fig. 28. a-b, Syrnolopsis minuta Bourguignat. Tanganyika. 
; * 
Syrnolopsis minuta Bourguignat 
3 Text Figure 28a-f 
Syrnolopsis minuta Boureuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tan- 
ganika,’ p. 21; 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. x, figs. 28-30; 1890, Ann. 
Se. Nat. Zool., (7) X, p. 147, Pl. x, figs. 28-30. Gmrmatn, 1905, Bull. Mus. Hist. Nat. 
Paris, p. 260; 1908, ‘Rés. Scientif. Voy. Afrique, Foa,’ p. 677. Ancey, 1907, Bull. 
Scientif. France et Belgique, (5) IX, (1906), pp. 255 and 266. 
?Syrnolopsis giraudi Boureuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tan- 
ganika,’ p. 20; 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. x, figs. 31-33; 1890, Ann. Se. 
Nat. Zool., (7) X, p. 146, Pl. x, figs. 31-33. Ancery, 1907, Bull. Scientif. France et 
Belgique, (5) IX, (1906), p. 255. ; 
2Syrnolopsis minuta var. major GERMAIN, 1909, Bull. Mus. Hist. Nat. Paris, 
p. 260; 1909, op. cit., p. 355, as equivalent to S. gtraudi. 
