African Non-marine MoUusca. 311) 



p. 232), wliicli is also a Pseudoglessula of the subgenus 

 Pseudocerastas. 



I therefore rename Craven's species fasciata as being the 

 only banded Pseiidoj/lessula yet recorded, although the bands 

 are not a constant feature in the species. 



Section Kempioconcita, Preston, 1913. 

 Shell large, elongate, perforate. 



Pseudoglessula (Kempioconcha) pilshryij nom. no v. 



Pilsbry has rightly pointed out that Ena kivuensis, Preston, 

 is a Pseudoglessula. It was described on p. 50 of the Itev. 

 Zool. Africaine, 1913, while on p. 53 appears J\enipia 

 kivuensis, Preston, which is also a Pseudoglessula, possibly of 

 the same subgenus as the above-mentioned species. 



Kempia kivuensis must therefore be rechristened, and I have 

 much pleasure in uamiug it after the greatest conchologist of 

 our time, in particular recognition of his work on the Congo 

 mollusca. 



Section Pseudocerastus, Germain, 1918. 



Founded for perforate species of the group of Ps. boivini 

 (Morelet). There does not appear to be room in the genus 

 for both the perforate groups, Kempioconclia and Pseudo- 

 cerastus, and the latter will probably have to retire into 

 synonymy, but there is a slight difference in appearance 

 between them, which may render it advisable to maintain 

 the distinction until the anatomy of Ps. pilsbryi is known. 



Pseudoglessula [Pseudocerastus) transenna, sp. n. 

 (PI. I. fig. 17 ; text-fig. 3, p. 346.) 



Shell of fair size_, subconoid, perforate, thin, silky, semi- 

 transparent, corneous bronze. Sj^ire moderately produced, 

 sides regular, apex slightly involute. Whorls 6, convex, 

 regularly increasing, the last showing faint basal margina- 

 tion, the first portion of the protoconch a trifle lower than 

 the remainder, so that the apex is distinctly hollow ; sculp- 

 tured to the apex with strong, regular, transverse costie, 

 which are sinuous and closer on the first 2 whorls, and 

 nearly straight, slightly oblique, and gradually increasing in 

 distance on the remainder, which are also covered with close, 

 obli([ue, criss-cross striation, forming, under a microsco[)e, a 

 regular pattern of lattice-work all over the shell : suture 

 simple, well defined ; aperture subovate, peristome sini|)le, 

 acute ; outer lip well curved outward, straight in profile ; 



