— 326 — 

 Kenia obesa, sp. n. — PI. XVII, fig. i8. 



Shell fusiform with obtuse apex, polished, shining, pale olive; whorls 6, 

 the last three rather rapidly increasing, marked Trith indistinct, transverse 

 growth lines; sutirre lightly impressed, narrowly margined below; colu- 

 mella thickened, descending in a curve, obtuseh^ truncate below, diffused 

 above into a narrow, restricted, tliin but -n-ell defined callus which i^eaches 

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

 ture rather elongatety, inversely aurifonn. 



Alt. 15 75, diam niaj. 6 mm. 



Apeiture : ait 25, diam 3 mm. 



Hab. — Betvreen Entebbe and Mbarara, S. W. Uganda (Robin 



Kemp) . 



Distingnished from other members of the groop bv its broad and 

 proportionatelv short form . 



Succinea eussoensis, sp. n. — PL XVÎI, fig. 7. 



Shell elongateh- ovate with somewhat exserted spire, yellowish brown ; 

 whorls 3, rapidly increasing, the last two rather conves below, marked with 

 lines of gi^owth: suture well impressed; columella descending obliquety; 

 labrum simple; aperture ovate. 



Alt. 7.5, diam. maj. 4.75, diam. min. 3 mm. 



Aperture : ait. 4.75, diana. 2.75 mm. 



Hab. — Chanler Falls, Eusse Nyiro, British East Africa (Robin 



Kemp) . 



Succinea simplicissima, sp. n. — PL XVII, fig. 4. 



Shell almost rectangular, verj' thin, semiti-ansparent, whitish; whorls 

 2 V4, very rapidly increasing, the earlier whorl and a quarter minute, the 

 last very long; columella descending obliquely, somewhat outwardh' bulging 

 above, cun"edly excavated below; labrum simple, bent slighth- inwards 

 over the apeilure near its point of insertion ^^-ith the pariétal wall ; aperture 

 ovate, dilated below, contracted above. 



Alt. 9, diam maj. 4.75, diam. min. 3 mm. 



Aperture : ait. 7, diam. 4 mm. 



Hab. — Chanler Falls, Eusse Nyiro, Biitish East Africa (Robin 



Kemp) . 



