TERRESTRIAL AXD FLUVTATILE StlELLS. 187 



Alt. 2, (liiini. iiiaj. 2-75, diam. min. 2*5 mm. 

 JIah. Between the Igembi Hills and Nyeri, British East Afiic-a 

 {Robin Kemp). 



Kaliella kigeziexsis, sp. n. (PI. XXXI. fig. 14.) 



Shell allied to K. consohr'uia, but imperforate, nnrrower in 

 form, with proportionately higher apertiu-e and rather finer 

 transverse sculpture; the columella also descends vevtically 

 throughout its whole length. 



Alt. 3, diam. maj. 3-2.5, diam. min. 3 mm. 



Aperture: alt. 1-2.5, diam. 1 mm. 



Hah. Between Mbarara and Kigezi, extreme S.W. Uganda ; 

 also at various points in the neighbourhood of Kigezi itself 

 {Robin Kemp). 



Kaliella iredalei, sp. n. (PI. XXXI. fig. 12.) 



Shell rimate, small, conically turbinate, light reddish brown ; 

 whorls 6, rather convex, the last not carinate at the periphery^ 

 sculptured with very fine, somewhat oblique, transveise striae ; 

 base of shell marked with lines of growtli and sculptured with 

 slightly distant, fine, wavy strife ; suture well impressed, not 

 margined ; umbilicus very narrow, partly concealed by the outward 

 expansion of the columella; columella outwardly expanded, 

 vertically descending in a gentle curve above, oblique below ; 

 labruni simple ; apertuie sublunate. 



Alt. 2-5, diam. maj. 2-75, diam. min. 2-5 mm. 



Hah. Between the Igembi Hills and Nyeri, British East Africa 

 [Robin Kemp). 



The very characteristic sculpture of this pretty little species is 

 only visible under the microscope. 



Sitala iredalei, sp. n. (PL XXXI. fig. 15.) 



Shell rather acuminately turbinate, Avith convex base, pale 

 greyish yellow ; whorls 6, somewhat rapidly increasing, the last 

 inflated, sculptured with microscopic, spiral strire and oblique, 

 transverse riblets or creases ; sutiue impressed ; columella 

 vertically descending, sligh.tly angled below ; aperture ovate. 



Alt. 4-25, diam. maj. 4*25 mm. 



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



Hah. Mt. Kenangop, Aberdare Range, British East Africa 

 [Robin Kemp). 



Teachycystis iredalei, sp. n, (PI. XXXII. figs. 8, 8 a, 8 b.) 

 Shell small, depressedly suborbicular, almost planulate, reddish 

 brown ; whorls 3, the apical whorl large, smooth, the remainder 

 sculptured throughout with rather fine and closely-set, obliquely 

 arcuate, transverse costulfe, between which occur very fine, 

 transverse strife, crossed by extremely fine spirals, both these 

 last and the transvei\se sti'ia' being only visible -with the aid of 

 the microscope : suture well impressed ; umbilicus very wide and 



