184 MR. JI. B. PRKSTON ON NKW 



Africarion kempi, sp. 11. (PL XXXI. fig. 3.) 



Hhell subovate, with moderately depressed spire, yellowish 

 hrown ; whorls 3, marked with arcuate, wrinkle-like growth- 

 ridges ; suture impressed, naiTowly margined below ; columella 

 vertically descending above, somewhat obliquely curved below ; 

 labrum simple, projecting in front, receding above and below 

 aperture rather squarely ovate, 



Alt. 7, diam. maj. 14, diam, min. 10"75 mm. 



Aperture: alt. nearly 7, diam. 8 mm. 



Hah. Between Eiitebbe and Mbarara, S,W. Uganda {.Robin 

 Xemp). 



Apricarion microstriata, sp. n. (PI. XXXI, figs. 4, 4 a.) 



Shell rather small, thin, moderately globose, with small and 

 depressed spire, pale yellowish horn-colov^r ; whorls 3, the first 

 two very small, the last proportionately very large, marked with 

 transverse, arcuate growth-wrinkles and microscopic, closely-set, 

 wavy, spiral strife ; s-iiture impressed ; base of shell rather 

 inflated ; columella descending in a strong curve ; labrum acute, 

 receding below and sharply above, veiy prominently projecting 

 in front ; aperture very broadly and somewhat compressedly 

 sublunate. 



Alt. 5*75, diam. maj, 11*25, diam, min. 8'5 mm. 



Aperture : alt, 5' 7 5, diam, 6-25 mm. 



Hah. Between Mbarara and Kigezj, extreme S.W. Uganda 

 (A'obin Kemp). 



Africarion microgranulata, sp. n» (PI. XXXI. figs. 5, 5 a.) 



Shell differing from A . inicrostriata in its much finer sculpture, 

 the spiral striae being very much finer and still more closely set ; 

 moreover, they are crossed by fine, oblique, transverse strise, thus 

 presenting under the microscope a finely granular appearance, 

 Tlie present species is also rather larger, the last whorl is some- 

 what more inflated^ and the labrum less prominently projecting 

 in front; the aperture is much higher in proportion to its breadth, 

 and the columella is even more curved than is the case with 

 A . microstriata. 



Alt. 8, diam, maj, 12, diam, min, 9 mm. 



Aperture : alt. 8, diam, 7 mm. 



Hah. Kigezi, extreme S.W, Uganda, at an altitnde of 6000 ft. 

 {Robin Kemp).. 



VlTRINA COMPACTA, Sp, U, (PL XXXII, fig. H,) 



Shell semiorbicular, not very thin, pale brown ; whorls 2|, 

 rapidly inci'easing, smooth but for radiate lines of growth, the 

 last whorl subaugulate at the periphery; suture impressed, 

 slightly crenellate and narrowly margined below ; base of shell 

 i-ather inflated ; columella descending* in a very gentle curve, 

 narrowly outwardly reflexed and diffused into a light callus which 

 reaches the upper margin of the labrum ; labrum simple, the 

 3uai-g'ins convei'ging ; apertui'e broadly subovate. 



