34 HENRY CLIFDEN BURNUP. 



centre of the aperture, and the lower edge of it penetrating 

 furthest inwards ; near the base of the columellar lip, a small 

 conspicuous tooth ; at the base, and set further back than the 

 two processes last named, an inconspicuous denticle ; and a 

 deep-seated, scoop-shaped columellar plait with mamillated 

 point on the inner edge presented forwards ; peristome white, 

 broad, expanded and reflexed, the ends connected by a slight 

 callus. 



Height 2-83, width 1-47 mm. 



Hab. — Isipingo, near Durban (Penther) ; other localities: 

 Natal : Kar kloof and Nottingham Road (Taynton), Lower 

 Umkomaas, Umbogintwini, Ntimbankulu — Mid-Illovo, Maritz- 

 burg, Edendale, Dargle and Inhluzani (Burnup). 



Cape of Good Hope : The Gorge, Van Staaden^s River 

 (Farquhar) . 



The umbilicus is rather widely open for so small an 

 Ennea, and, as is usual in openly umbilicated shells of the 

 genus, has a branch of the perforation passing into the 

 columellar fold. In the type the callus connecting the ends 

 of the peristome is not very clearly defined, and I can readily 

 understand the author having overlooked its presence before 

 the shell was cleaned. In most examples it is much better 

 developed, sometimes obliterating the sculpture underneath, 

 but in many instances, especially in rather young, though 

 mature shells, alloAving the ribs to be seen through it. On 

 the outside of the shell can be seen, not only a large deep 

 cavity corresponding with the strong labral plait, but also 

 smaller, shallower pits marking the positions of the basal 

 denticle and the basi-columellar tooth. The distribution^ 

 including a locality so remote as Van Staaden^s River in the 

 Cape Province, is worthy of note : the specimens from the 

 last-named locality are quite normal. 



Since I have shown the type of the variety cylindrica to 

 be identical in its characters with the type of the species 

 except in size and slightly in form, it becomes inadmissible to 

 recognise it as a distinct variety. The dimensions given by 

 the author show the two shells to be identical in the ratio of 



