ON SOUTH AFRICAN ENNE.l^. 53 



my figure are that the coluinellar lip of the former is of more 

 uniform breadth than that of the figure, and the prominence 

 on the deep-set columellar plait is not situate quite so high. 



There is a certain resemblance between this species and 

 Ennea crassidens Pfr., but the greater size, the ovoid 

 form and conical apex, and the shortness and squareness of 

 the labral tooth of the latter are enough to distinguish it at a 

 glance. It also seems to bear some resemblance to Ennea 

 tharfieldensis, M. & P., a species unknown to me 

 except from description and figure. Connolly has kindly 

 compared the two types in the British Museum, and con- 

 siders the latter sufficiently distinct through the presence 

 of a denticle at the junction of the columella and the 

 paries, should this feature prove to be constant. The colour 

 attributed to the type in the original description probably 

 arises through the remains of the animal being seen through 

 the transparent shell. The upper whorls of my shell have 

 an ochraceous tint from the same cause. 



From the rima a deep narrow channel passes into the deep- 

 seated columellar plait, but no axial perforation can be 

 distinguished. The processes on the outer and the columellar 

 lips and at the base have corresponding depressions on the 

 outside of the shell. 



Besides the shell figured I have been privileged to examine 

 tAvo specimens in Mr. Ponsonby's collection and three in 

 Mr. Langley's, all from Kowie. They are all much larger 

 than the specimens from Clriqualand East, but exhibit no 

 important variation. A slight difference in the develop- 

 ment of the peristome and its processes may be observed, 

 but not to any material extent. 



The dimensions of the specimens from Kowie are as 

 follows : 



Height X width, 4-94 x 2-18, 4-94 x 2-13, 4-84 x 2-29, 

 4-40 X 2-15, 4-34 x 2-14 mm. 



