ON SOUTH AFKIGAN ENNE^, 68 



in-running parietal plait, a sub-central moderately large 

 labral tootli slightly bifid, a small pointed tooth near the 

 base of the columellar lip, a flattish scoop-shaped internal 

 columellar plait whose lower right edge advances forward 

 ahnost as a mammillate point, and a slightly raised ridge 

 Avitliin the basal lip extending from behind the labral tooth 

 downwards and forwards towards the base of the columellar 

 lip. 



Height 2'55, width 1'24 mm. 



Hab. — Game Pass, Upper Mooi River, Natal (Burnup). 



The details of the several processes as set forth under the 

 description of E. mel villi, herein, Avould apply almost equally 

 well to those of this species, but the following differences 

 exist : the tooth near the base of the columellar lip is smaller, 

 less erect, and less plait-like in form in this species ; the 

 broad, slightly raised, rounded tooth higher on the columellar 

 lip of melvilli is here absent; and the ridge on the basal 

 wall is less parallel with the peristome. Although so much 

 of the description of the one species applies to the other, the 

 greater dimensions, especially in width, the less fusiform 

 contour, the larger aperture and the smoothness of the surface 

 of this species distinguish it very readily from melvilli. 

 Th^ labral tooth and that near the base of the columellar lip 

 have corresponding depressions on the outside, but the ridge 

 on the basal wall does not seem to be excavated, though its 

 position within can be traced on the outside by a white scar. 

 The opening from the rima to the columellar plait is exceed- 

 ingly narrow, while that to the axial perforation is even 

 narrower, only being discerned by the aid of a very strong 

 lens. 



This species may also be compared with E. columnella 

 If. & P., whose peculiar columellar plait, however, will always 

 readily distinguish it ; besides, the latter is smaller, has 

 traces of minute striae below the suture, and much more 

 numerous and stronger stride on the last half-whorl, has the 

 labral tooth much more widely bifid, and the basal tooth, or 

 tooth-like plait, much more central and in-running. 



