1927] Pilsbry-Bequaert, The Aquatic Mollusks of the Belgian Congo ° 808 
TANGANYICIA Crosse 
Tanganyicia CrossE, 1881, Journ. de Conchyl., XXIX, p. 123. Monotype: 
Inthoglyphus rufofilosus BE. A. Smith. 
Tanganikia Bourcuienat, 1885, ‘Notice Prodrom. Moll. Giraud Tanganika,’ 
pp. 10 and 41; emendation of Tanganyicia Crosse. Type by present designation: 
Tanganikia maunoiriana Bourguignat = Tanganyicia rufofilosa (E. A. Smith). 
Cambieria BourGuIGNAT, 1885, ‘Notice Prodrom. Moll. Giraud Tanganika,’ 
p. 42. Monotype: Lithoglyphus rufofilosus E. A. Smith. 
Hautteceuria BourcuieNnat, 1885, ‘Notice Prodrom. Moll. Giraud Tanganika,’ 
p. 46. Type by designation of Germain (1908, ‘Rés. Scientif. Voy. Afrique Foi,’ 
p. 644): Hautteceuria soluta Bourguignat. 
Tanganyikia GERMAIN, 1908, ‘Rés. Scientif. ane Afrique Foa,’ p.642. Emenda- 
tion of Tanganyicia Crosse. 
é f g h i 
Fig. 59. a-b, Tanganyicia, an undertermined form from Tembwe _ c-2, Tan- 
ganyicia rufofilosa (E. A. Smith); c, e-h, from Moliro. x 136 
E. A. Smith (1904) and. Ancey (1907) accept only one species in 
the genus. Germain (1908), however, after studying some of Bourguig- 
nat’s types, concludes that four species may be recognized, which he 
distributes among the two subgenera Tanganyicia and Hautteceuria. 
In the material which we have examined there are, we believe, a number 
of forms which are at least racially or perhaps even specifically distinct. 
We therefore provisionally accept Germain’s conclusions. 
Our figures represent two forms, probably different species. Figs. 
59c to 7 are varying forms of 7. rufofilosa. This is imperforate in the 
young (Fig. 59g, length 7.4 mm.) but becomes rimate or quasiumbilicate 
with age. Fig. 59c, e-h are from Moliro (Pilette Coll.), d and 7 not de- 
finitely localized. Fig. 59a, 6 are apparently a different species, from 
