1880.] FROM CENTRAL AFRICA. 347 



angulatiou at the middle, beneath which the costulate sculpture 

 becomes almost obsolete and the surface comparatively smooth and 

 shilling. In the mature shell tins angulation disappears, a-.id the 

 strength of the sculpture decreases insensibly. 



5. Ennea lata, sp. nov. (Plate XXXI. figs. 4, 4 a.) 



Shell ovately pupiforni, rimate, transparent white, thinnish, 

 obliquely striated ar.d finely serrated beneath the suture. "Whorls 7. 

 rather convex, penultimate nearly as broad as the last ; this is 

 attenuated somewhat at the base, ascends anteriorly, is faintly 

 flattened in front above the aperture, where it is rather smoother 

 than elsewhere. Spire obtuse, scarcely at all conoid at the apex. 

 Aperture nearly vertical, occupying about three sevenths of the entire 

 length, without teeth. Peristome a little thickened and everywhere 

 narrowly reflexed. Columella dilated, united to the outer lip by 

 a thin glossy callosity. Length 20 millims., diam. 1 1 ; aperture 

 9 long, 7 5 broad. 



E. anodon of Pfeiffer somewhat resembles this species. It is, 

 liowever, smaller, more conical at the summit, and has a simple un- 

 serrated suture. From the serrations or denticles flow downwards 

 fine oblique but little raised costula?, which are scarcely observable 

 to the unassisted eye. Tiie labrum, viewed laterally, is seen to be 

 obliquely but slightly curved ; the columella too is' also sloped or 

 receding. 



6. Ennea ujijiensis, sp. nov. (Plate XXXI. fig. 5.) 



Shell elongate, cylindrical, thin, obliquely rimate, pale horny 

 colour, obliquely costulate, the costulse being not much elevated, 

 and jjrettily dentiform above at the suture. Whorls 10? Apex? 

 The six remaining volutions are slightly convex, slowly increasing, the 

 penultimate as broad or even a trifle broader than the last, which is 

 deeply transversely grooved behind by two parallel furrows which 

 do not extend quite to the lip. Aperture subvertical and subauriform, 

 furnished w'ith folds : one upon the paries is elevated, thin, lamellar,' 

 extending right within the mouth ; two others, equally large and re- 

 flexed at their top, are situated upon the outer lip, stretching far in- 

 wards, but not attaining to the margin; beneath these two and beneath 

 the lower one there are one or two minor ridges. The columella has 

 a subbasal oblique fold, and a smaller dentiform plait at the upper 

 part. The peristome is prominent and a little expanded, the dextral 

 margin being situated near the upper extremity and prominent in 

 the middle, the columellar edge rather reflexed. Probable length 

 19 millims., actual length of six whorls 17 millims., diam. 5i; 

 aperture o long, 4 wide. ^ ' 



This species must be very closely related to E. papillifera, Jickeli, 

 from Abyssinia, which is only known to me by description. The 

 latter, however, is not half the length of JS". vjijiensis, appears to be 

 very finely striated and with five plic6e within the aperture, whilst 

 the present species is distinctly costulated and has two or three 

 additional internal ridges. 



