7G HENKY CLIFDEN BURNUP. 



drawn as fig. 60, of tlie minute tooth on the outer edge of the 

 labruni, close under the suture, so I infer that he attaches no 

 significance to it, and it is probably an accidental development. 

 It is interesting, however, to note the presence of an equivalent 

 tooth in my specimen of Ennea premnodes 8tur. (fig. 56), 

 a somewhat similar but much larger and heavier-built shell. 

 The position of this tooth in premnodes is a little further 

 forward, and so it is lost in perspective and shade in the 

 figure. As Sturany does not mention this tooth in his descrip- 

 tion of premnodes, it is to be inferred that it is absent from 

 the type, and its presence in my specimen is also accidental. 



The minute columellar tooth shown in fig. 61, and, fide 

 Smith, non-existent in the type of montana, is, curiously 

 enough, shown in the original figure, though not very pro- 

 minently, but is not referred to in the oi-iginal description. 

 In no specimen that I have examined is it so conspicuous as 

 in that shown in figs. 61, 62, 63. In some it is but slightly 

 raised (e. g. fig. 60) ; in others it is merely represented by a 

 slight swelling (e. g. fig. 66), but in the greater number it is 

 entirely absent. 



Since submitting the matter to Mr. Smith, Mr. Farquhar 

 has kindly sent me his whole series for examination, con- 

 sisting of four specimens of montana collected at and near 

 Mountain Drive, Grahamstown, one of them being from the 

 original lot, five specimens collected with the original lot 

 of parallela near the Asylum, Grrahamstown, and ten 

 specimens, unnamed, collected at Gowie's Kloof, near the 

 same city. I have also been favoured by an opportunity to 

 examine the only specimen in the Alexander McGregor 

 Museum, Kimberley, also from Gowie^s Kloof. This large 

 series amply confirms Mr. Smith's views that parallela is 

 inseparable from montana. It seems to be a species very 

 constant in its elongate cylindrical form, in its sculpture con- 

 fined (except on the apical whorls, which are smooth, and the 

 last half -whorl, in which the sculpture crosses the whole width) 

 to the area immediately below the suture, and in the position 

 of the important apertural processes, but most variable in the 



