ji6 JOURNAL OF GONCHOLOGY, VOL. lO, NO. lO, APRIL, IQO^. 



lente acerescentes, sut-wra ferehorizoiUali anguste pellucido-marginata 

 sejundi, strlis ohliquis vix conspicuis sculpti^ ultimus antice leviter 

 descendens, pone lab mm contractus et fortiter scrobiculatus ; apertura 

 parva, rotundo-qiiadrata, antice angustior qieani supra, quinque- 

 dentata, dente parietali aliis longe majori ; peristoma ijicrassatum 

 refiexum, margine dextro supra denti parietali j undo. Longit. 3*5 

 nun., diam. 2 mm. 

 Ifab., E. Uganda. 



The armature of the aperture is very remarkable. The parietal 

 tooth is a squarish plate, thin, flat and narrowed where it is attached 

 to the whorl. This narrowing is only observable when the plate is 

 viewed laterally. The tooth is very prominent and stands out beyond 

 the level of the labrum to which it is united, forming a loop-like sinus. 

 The remaining four teeth are almost of equal size, and situated 

 further within the aperture, one on the columella, one basal, and two 

 within the outer lip. The exterior of the whorl exhibits indentations 

 corresponding to these denticles, 



4. Ennea prodigiosa. , (PI. IV., fig. n). 



Testa parva, tenuis, vitreaj polita, breviter cylindracea, ad apicem obtuse 

 rotundata, anguste umbilicata ; anfradus quinque, valde convexi, 

 sutura profunda vix obliqua sejundi, striis obliquis vix compicuis 

 sculpti, ultimus antice angustatus, prodadus, solutus, tubiformis, pone 

 labrum scrobiculatus, supra profunde sinuatus ; peristonia tenue, leviter 

 expansum, supra sinu parvo fere circulari interruptum : apertura 

 quinquedentata, minima; detis parietalis lamelliformis prominens, 

 denies duo columellares sub.equales, uiius ad basim simiLiris, palatalis 

 units obliquus lamelliformis. Longit. 2*5 mm., diam. i"5 mm. 

 Ifab., E. Uganda. 

 A most remarkable species on account of the deep slit extending 



from the prominent lip almost to the suture, and terminating in an 



almost completed circular opening. 



5. Ennea columella. (PI. IV., fig. 12). 



Testa cylindracea, vitrea, polita, rimata; spira elongata, cylindracea, 

 ad apicem obtuse rotundata; anfradus 6|-, superiores tres convexius- 

 culi, coeteri minus convexi, sutura leviter obliqua et anguste pellucido- 

 marginata sejundi, ultimus antice leviter descendens, pone labrum con- 

 tractus, sed vix scrobiculatus ; apertura miniina, semiovata,quadriden- 

 tata ; peristoma angustum, leviter incrassatum et reflexum, marginibus 

 remotis, callo tenui jundis; dens parietalis magnus, prominens, 

 lamelliformis, columellaris magnus, longe intus situs, palatalis minor, 

 obliquus, lamelliformis, ad labrum hand attingens, basalis minimus, 

 transversus. Longit. 2'7S mm,, diam. i mm. 

 Hab., E.^ Uganda. 



