MOLLUSCA FROM EQUATORIAL AFRICA. 199 



Ennea adelpha, sp. n. (PI. XXXII. figs. 7,1a; PI. XXXIV. 

 figs. 1, 1 a.) 



Shell allied to E. vicina Smith* from Chiradzulu, British 

 Central Africa, but differing from that species chiefly in its 

 coarsely crenellate suture and coarse, transverse, plicate sculpture ; 

 the small parietal denticle of E. vicina is also much more developed 

 and the broad, tridentate projection on the inner margin of the 

 outer lip less so. 



Alt. 6"5, diam. maj. 3'25 mm. 



Aperture: alt. 2*25, diam. 1-75 mm. 



Hah. Between Masaka and Entebbe, extreme S.W. Uganda 

 (^Rohin Kemp). 



The very distant locality of E. vicina, which is situated to the 

 south of Lake Nyassa, has to a certain extent influenced me in 

 separating the present species. 



Ennea perturbata, sp. n. (PI. XXXV. figs. 7, 7 a.) 



Shell allied to E. adelpha and in a measure to E. vicina Smith, 

 but shorter a,nd with less convex whorls than either, besides 

 lacking the two internal basal denticles which seem to be a 

 character common to both those species. 



Alt. 6, diam. maj. 3 mm. 



Aperture: alt. 1-75, diam. 1 mm. 



Hah. Mt. Elgon, Uganda (C. W. Woodhouse). 



Ennea coeni, sp. n. (PI. XXXII. figs. 15, 15 a.) 



Shell difiering from E. jyerttirhata and its allies E. vicina Smith 

 and E. adeljyha in lacking the group of three closely situated and 

 projecting lamellfe on the upper part of the columella, which, in 

 the pi-esent species, are replaced by a single, small, and slightly 

 curved denticle. 



Alt. 5'75, diam. maj. 2*75 mm. 



Aperture : alt. 1*5, diam. '75 mm. 



Hah. Mt. Elgon, Uganda {C. W. Woodhouse). 



Ennea woodhousei, sp. n. (PI. XXXV. figs. 15, 15 a.) 



Shell allied to E. perturbata, but considerably smaller, with 

 rather coarser and more distant transverse plicse and more basally 

 constricted aperture ; the tridentate projection on the inner side 

 of the outer lip, which is common, not only to the above species, 

 but also to E. vicina Smith, and to E. adelpha, in the present 

 case appears as a veiy broad, bidentate, shelf -like protuberance, 

 almost choking the aperture. 



Alt. 4-75, diam. 2-5 mm. 



Aperture : alt. 1, diam. '75 mm. 



Hah. Mt. Elgon, Uganda {C. W. Woodhouse). 



Ennea nyikaensis, sp. n. 



Shell diflfering from E. fortidentata Smith t in its larger and 



* Proc. Zool. Soc. Lond. 1899, pp. 580-581, pi. xxxiii. figs. 1, 2. 

 t Ann. & Mag. Nat. Hist. 1890, vi. p. 162, pi. vi. lig. 6. 



