186 MR. H, B. PRESTON ON NEW 



Thapsiella millestriata, sp. n. (PI. XXXII. fig. 12.) 



Shell perforate, very clepressedly turbinate, thin, pale yellowish 

 brown ; whorls 4^, regularly and rather rapidly increasing, marked 

 throughout with radiate and very minute and closely-set, wavy, 

 spiral striae ; suture impressed, margined below ; umbilicus narrow, 

 deep, partl}^ concealed by the outward expansion of the columella ; 

 columella outwardly expanded above, very obliquely descending, 

 a well-defined, outwardly projecting callus reaching from it to the 

 upper margin of the labrum ; labrum thin, acute, receding below ; 

 aperture very broadly and compressedly sublunate. 



Alt. 4, diam. maj. 8, diam. min. 6"75 mm. 



Aperture : alt. 3"5, diam. nearly 4*25 mm. 



Hah. Near Kigezi, extreme S.W. Uganda, at an altitude of 

 6000 ft. {Robin Kemp). 



Thapsiella opposita, sp. n. (PI. XXXII. fig. 13.) 



Shell diflTering from Helix zangueharica Craven * in being 

 spirally sculptured throughout and in having no transverse stride 

 on the spire, whereas H. zcmgvebarica has no spirals on the spire 

 but is strongly transversely striate, the basal strife are not so 

 apparent as those on H. zangueharica ; in other respects there is 

 a great resemblance between the two species. 



Alt. 1-75, diam. maj. 1"5 mm. 



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

 {Robin Kemp). 



It may be as well to mention here that through the courtesy 

 of Mr. E. A. Smith I have microscopically examined the type 

 specimen of Mr. Craven's species in the British Museum, which 

 is, as stated above, basally spirally striate, though no mention is 

 made of this important character in his descri]3tion, 



Kaliella consobrina, sp. n. (PI. XXXI. fig. 11.) 



Shell rimate, conical, pale bi-ownish hoi'n-colour ; whorls 5|, 

 sculptured with fine, oblique, slightly wavy, closely-set, transverse 

 striae, the last strongly carinate at the periphery ; base of shell 

 rather inflated, marked with lines of growth and fine, wavy, spiral 

 stria? ; suture impressed, narrowly but strongly callously margined 

 above ; umbilicus reduced to a mere chink ; columella outwardly 

 expanded and very vertically descending above, oblique below ; 

 labrum simple ; aperture angularly sublunate. 



Alt, 3"75, diam. ma.j. nearly 4, diam. min. 3*5 mm. 



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



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

 {Robin Kem,p). 



Kaliella depauperata, sp. n. (PI. XXXI. figs. 13, 13 a.) 

 Shell differing from K. consobrina in its smaller size, it having 

 one whorl less, and in its pi'oportionately broader shape, in being 

 very bluntly carinate at the periphery, and in its rather lighter 

 colour ; moreover, it lacks the spiral basal strise of that species. 



* Proc. Zool. Soc. London, 1880, p. 217, pi. xxii. figs. 4 a, h, c. 



