African Non-marine MoUusca, 355 



the suture of the later whorls ; there are usually, also, 

 patches of very close, regular, microscopic spiral sculpture, 

 but this is very faint and by no means a distinguishing 

 feature ; suture simple, shallow, Aperture subovate, peri- 

 stome simple, acute ; outer lip straight and nearly vertical in 

 profile ; columella short, concave, sharply truncate at base. 



Long. 11-6, lat. 4*5; apert., alt. 4'5; lat. 2*2 ; last whorl 

 7'4 ram. 



Hab. Uganda, Kigezi, 6000 ft. ; Ingezi, Mfumburu 

 Mountains. Belgian Congo, Buhamba ; Buruuga, Mt. 

 Mikeno (Kemp). 



Different broods vary slightly in contour, and were distri- 

 buted before the war under manuscript names of the first three 

 localities above mentioned, but the engraved sculpture is 

 common to all, and there appear to be no geographical or 

 other valid grounds for separating them. 



Dr. Pilsbry kindly informs me that N. ugayidanus differs 

 from all oi: the species dealt with by him in his recent work 

 on the Congo. 



Notliapalus adelus, sp. n. (PI. I. fig. 27.) 



Differs from the preceding species in having a broader 

 spire and rather closer sculpture, which is also of more 

 normal pattern, the striae being raised and imparting less the 

 appearance of grooves than in N. ugandamis. The shell 

 contains 6| whorls, and measures : — 



Long. 11'25, lat. 47 ; apert., alt., 4-3, lat. 2*1 ; last whorl 

 7'25 mm. 



Huh. Probably Belgian Congo, between L. Mutanda and 

 L. Kivu [Kemp). 



Dr. Pilsbry informs me that N. adelus stands very close 

 to N. ptychoraphe, Pilsb., but, thongh possessing the same 

 number of whorls, it is smaller throughout and relatively wider 

 than his species. 



Nothapalus paucispira (von Martens), 1892. 



1892. Subulina paucispira, Mts. Sitz.-Ber. Ges. nat. Fr. Berlin, p. 177. 

 1912. Kenia ohesa, Prest. Rev. zool. Africaine, i. p. 326. 



Paratypes of both the above are in the British Museum ; 

 they are quite inseparable, and Preston's species must be 

 placed in synonymy. 



Nothapalus unctus (Smith), 1903. 

 Described as a Subulina ^ this species is a Nothapalus ^ 



