314 Bulletin American Museum of Natural History [Vol. LIII 
Giraudia tanganyicensis E. A. Smrru, 1904, Proc. Malacol. Soc. London, VI, 2, 
p. 96, fig. 5 (onp.87). Ancry, 1907, Bull. Scientif. France et Belgique, (5) IX, (1906), 
pp. 254 and 265. Germain, 1908, ‘Rés. Scientif. Voy. Afrique Foa,’ p. 649, fig. 12 
(on p. 648). 
Giraudia tanganyikana E. A. Smith. Ancry, 1894, Bull. Soc. Zool. France, XIX, 
. 28. 
é Assiminea quintana J. MapiLqy, 1901, Bull. Soc. Philomath. Paris, (9) III, 2, 
p. 56 (Tanganyika). 
Giraudia quintana J. Mabille. E. A. Smrrx, 1904, Proc. Malacol. Soc. London, 
VI, 2, p.95. Germain, 1905, Bull. Mus. Hist. Nat. Paris, p. 259. 
Lake Tanganyika: originally described from the lake without more definite 
locality (E. C. Hore Coll.); Ufipa (Lechaptois Coll.). 
Bripovxia Bourguignat 
Bridouxia Boureuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tanganika, 
p. 29. Type by present designation: Bridowaxia giraud: Bourguignat. 
This genus is unknown to us. It is by no means certain just where 
it belongs. 
Bridouaia giraud: Bourguignat 
Bridouxia giraudt Boureuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tan: 
ganika,’ p. 380; 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. rv, figs. 5-7; 1890, Ann. Se. 
Nat. Zool., (7) X, p. 54, Pl. 1v, figs. 5-7. Ancry, 1907, Bull. Scientif. France et 
Belgique, (5) IX, (1906), p. 254. 
Bridouxia villeserriana BouRGuIGNAT, 1885, ‘Notice Prodrom. Moll. Giraud 
Tanganika,’ p. 30 (type locality: beach of Kapampa, on the southeastern shore of 
Tanganyika); 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. rv, figs. 8-10; 1890, Ann. Se. 
Nat. Zool., (7) X, p. 55, Pl. rv, figs. 8-10. Ancry, 1907, Bull. Scientif. France et 
Belgique, (5) IX, (1906), p. 254. 
Bridouxia costata BouRGUIGNAT, 1885, ‘Notice Prodrom. Moll. Giraud Tan- 
ganika,’ p. 31 (type locality: beach of Kapampa, on the southeastern shore of Tan- 
ganyika); 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. rv, figs. 11-13; 1890, Ann. Sc. 
Nat. Zool., (7) X, p. 56, PL. rv, figs. 11-18. Ancry, 1907, Bull. Scientif. France et 
Belgique, (5) IX, (1906), p. 254. 
Bridouxia reymondi Bouracuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tan- 
ganika,’ p. 32 (type locality; beach of Kapampa, on the southeastern shore of Tan- 
ganyika); 1888, ‘Iconogr. Malacol. Tanganika,’ Pl. rv, figs. 14-18; 1890, Ann. Se. 
Nat. Zool., (7) X, p. 57, Pl. rv, figs. 14-18. Ancry, 1907, Bull. Scientif. France et 
Belgique, (5) IX, (1906), p. 254. 
Lake Tanganyika: Kapampa on the southeastern shore (type locality). 
Spekia GRouP 
Shell imperforate, orbicular, irregularly hemispherical, with short spire of 4 or 5 
convex, smooth whorls. The very large aperture is strongly oblique; columella 
calloused, bounded by a large, concave, lunate area with angular boundary. Oper- 
culum oblong, concentric with a paucispiral center. Radula with very wide central 
tooth, short side teeth, the two marginals similar, with numerous denticles. 
