1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo 397 
Grandidierza elongata Bourguignat 
Grandidieria elongata BourGcuiIcnaT, 1885, ‘Notice Prodrom. Moll. Giraud 
Tanganika,’ p. 94. Sirmpson, 1900, Proc. U. S. Nat. Mus., XXIT, p. 830; 1914, 
‘Descript. Cat. of Naiades,’ p. 1061. 
Lake Tanganyika: Mpala (type locality; Giraud Coll.). 
Grandidieria giraudi Bourguignat 
Grandidieria giraudi BourguIGNatT, 1885, ‘Notice Prodrom. Moll. Giraud Tan- 
ganika,’ p. 95. Simpson, 1900, Proc. U. 8. Nat. Mus., XXII, p. 830; 1914, ‘Descript. 
Cat. of Naiades,’ p. 1059. 
Unio (Grandidieria) rostralis var. giraudi Bourguignat. GERMAIN, 1908, ‘Rés. 
Scientif. Voy. Afrique Foa,’ p. 683, figs. 33 and 34 (on p. 684). 
Grandidieria bourgquignati ‘Joubert’? Boureuienat, 1888, ‘Iconogr. Malacol. 
Tanganika,’ p. 43, Pl. xrx, figs. 7-9. Simpson, 1900, Proc. U.S. Nat. Mus., XXII, p. 
829. 
Unio (Grandidieria) bourguignati Bourguignat. GERMAIN, 1908, ‘Rés. Scientif. 
Voy. Afrique Foi,’ p. 684, figs. 35 and 36. 
Lake Tanganyika: Mpala (type locality; Giraud Coll.). No definite type 
locality is given of G. bourguignatz. 
Grandidieria gravida Bourguignat 
Grandidieria gravida BouRGUIGNAT, 1885, Bull. Sog. Malacol. France, A Os ee a ce 
1, figs. 1-6; 1888, ‘Iconogr. Malacol. Tanganika,’ p. 41, Pl. xvi, figs. 11-16. Srup- 
son, 1900, Proc. U. 8S. Nat. Mus., XXII, p. 829; 1914, ‘Descript. Cat. of Naiades,’ 
p. 1056. 
Grandidieria rostrata BouRGUIGNAT, 1885, Bull. Soc. Malacol. France, I, p. 10, 
Pl. 1, figs. 10-12; 1885, ‘Notice Prodrom. Moll. Giraud Tanganika,’ p. 103; 1888, 
‘Iconogr. Malacol. Tanganika,’ p. 41, Pl. xvi1t, figs. 17-19. 
Grandidieria locardiana BourcuieNnat, 1885, ‘Esp. Nouv. Ouk. Tanganika,’ 
p. 18. Simpson, 1900, Proc. U.S. Nat. Mus., Aho, 830, 
Unio (Grandidieria) locardi Bourguignat. GERMAIN, 1908, ‘Rés. Scientif. Voy. 
Afrique Foi,’ p. 682, figs. 31 and 32 (on p. 683). 
Unio (Grandidieria) rostralis E. v. Marrens, 1897, ‘Deutsch Ost Afr., IV, Be- 
schalte Weichth.,’ p. 238 (new name for G. rostrata). GERMAIN, 1908, ‘Rés. Scientif. 
Voy. Afrique Foi,’ p. 681, figs. 27-36; 1911, Bull. Mus. Hist. Nat. Paris, p. 440. 
Unio tanganyicensis var. E. A. Smrru, 1881, Proc. Zool. Soc. London, p. 298, PI. 
XxxIV, fig. 35. : | 
Unio (Grandidieria) rostralis var. brevior KE. v. MARTENS, 1897, “Deutsch Ost 
Afr., IV, Beschalte Weichth.,’ p. 239 (new name for G. gravida). 
Unio (Grandidieria) rostralis var. gravida Bourguignat. GERMAIN, 1908, ‘Rés. 
Scientif. Voy. Afrique Foa,’ p. 682, figs. 27-28 (on p. 683). 
Lake Tanganyika: originally described from the lake without more definite 
locality. There is also no definite type locality of G. rostrata and G. locardiana. 
Grandidieria hautteceurt Bourguignat 
Grandidieria hautteceuri BourGuIGNAT, 1885, ‘Esp. Nouv. Ouk. Tanganika,’ p. 
LF, 
