SMITH : MOLLUSCA OF LAKE TANGANYIKA. 85 



Kytra Kirki, Moore: Proc. Zool. Soc, 1901, vol. ii, pp.461, 465, 

 pi. xxvi, fig. 2. 



LiMNOTEOCHTTS Thomsoni, Smith. 



Limnotrochm Thomsoni, Smith : iii, p. 425 ; ii, p. 285, pi. xxxiii, 

 figs. 17-173; Crosse, p. 127 ; Bourguignat, i, p. 59; ii, pi. x, 

 figs. 4-7 ; iii, p. 136; Pelseneer, p. 105; Martens, p. 210; 

 Moore, ii, pp. 233-7, figs. 17-20, and figs, on p. 349 ; 

 i, pi. xxiii, fig. 5 ; Digby, Joum. Linn. Soc, 1902, vol. xxviii, 

 p. 437, pis. xxxviii and xl. 

 "With this species I unite L. Giraudi and L. cydostoma, Bourguignat 



(ii, iii). 



TiPHOBiA HoEEi, Smith. 



Ti^hohia Horei, Smith : i, p. 348, pi. xxxi, figs. 6-63 ; ii, p. 293, 

 pi. xxxiv, fig. 28, operculum; Crosse, p. 117, pi. iv, figs. 2-23; 

 Martens, p. 203, pi. vi, fig. 45 ; Moore, i, pp. 181-204, 

 pis. xi-xiv ; ii, pp. 221-8, figs. 2-7 ; Bourguignat, vii, 

 vol. iii, pp. 141-150. 



Hylacantha Horei, Bourguignat: ii, pi. ix, figs. 1-4; iii, p. 128; 

 Ancey, Le Naturaliste, 1886, vol. iii, p. 292. 



Hylacantha Bourguignati, Bourguignat : ii, figs. 5-7 ; iii, p. 132. 



Hylacantha longtrostris, Bourguignat: ii, figs. 8-10; iii, p. 129; 

 Nicolas, C.R. Assoc. Frangaise, 1898, 2^ partie, p. 515, fig. 3. 



Hylacantha Jouherti, Bourguignat: ii, figs. 11-13; iii, p. 131. 



The characters pointed out by Bourguignat as distinguishing his 

 so-called species, H. Bourguignati, longirostris, and Jouherti, have no 

 specific value whatever, and merely indicate individual variation. 



This is a striking instance of the 'species-making' as perpetrated 

 by the Nouvelle ecole of French conchologists. Any reasonable 

 person can see at a glance that all four forms are merely variations 

 of one and the same species. With regard to the generic name 

 employed by M. Bourguignat, namely, Htjlacantha of Ancey, I have 

 already shown ' that this is not admissible, and that Tvphohia, which 

 I originally proposed for this genus, must be retained. It is un- 

 fortunate that Mr. Moore persistently writes the name as Typhohia, 

 which is a genus of Coleoptera, and has altogether a differeut 

 derivation. 



Bathanalia Howesi, Moore. 



Bathanalia Hoivesi, Moore : Proc. E.oy. Soc, 1898, vol. Ixii, pp. 451-2, 

 fig. 2 ; i, p. 192, pi. xii, figs. 29-33 ; op. cit., p. 316, pi. xxiii, 

 fig. 3; ii, pp. 227-8, figs. 8-10; Proc. Malac Soc, 1898, 

 vol. iii, p. 92, fig. 2 on p. 93 ; Nicolas, C.R. Assoc. Fran9aise, 

 1898, 2e partie, p. 525, fig. 8 (1899). 



1 Jouru. de Conch., vol. xxxix (1891), p. 21. 



