634 MB. E. A. SMITH OX LAXD AND FRESHWATEE [NoV. 7, 



indentatus ; apertura irregularis, longit. totiiis -f^ suh(Bquaiis, 

 dentibus quinque cdhis {xmo j^arietcdi lamdliformi valde promi- 

 nente, uno columellari crasso ceque prominente, tertio infra colu- 

 mellarem minimo, quarto et quinto intra lahrum sitis, quinto 

 hidentato) rnunita ; peristoma album, leviter expanswm et incras- 

 satura. 

 Lonr/it. 8| millirn,, diam. 4; apertura 2k longa. 

 Hah. Karonga, west shore of Lake Nyasa {R. Craivshay). 

 This species exhibits scarcely any trace of sculpture. The iu- 

 dentation on the body-whorl behind the lip indicates the position 

 of the labral teeth. The upper one of these is planted somewliat 

 obliquely and is distinctly bipartite. The parietal lamella is tliin, 

 hollowed out or concave on the right side or towards the labrum, 

 which it practically touches at the upper extremity. 



3. Helix (Pella) whytei. (Plate LIX. figs. 3, 4.) 



Testa depresse globosa, anguste perforata, tenuis, jlavo-virescens, 

 superne vix nitida, infra polita ; anfractics 5|, subceleriter 

 crescentes, convexi, lineis incrementi oblique arcuatis sculpti ; 

 spira brevis, conica, ad ajncern subobtusa; anfr. idtimus 

 magnus, ad peripheriam rotundatus ; apertura late lunaris, 

 parum obliqua ; sutura mediocriter profunda, anguste marginata ; 

 peristoma undique tenue, supra uinhilicum breviter rejlexum. 

 Diam. maj. 20 millim., min. IGg; alt. 13. 

 Hub. Port Johnston, Upper Shire Eiver. (Collected bv Mr. A. 

 Whyte.) 



Allied to Pella arnotti, Benson, but more globose and without 

 the minute spiral striation on the upper surface. 



AU the specimens, about tliirty, have been collected without the 

 li\dng animal, and in this condition most of them have the spire 

 more or less bleached. In addition to the hnes of growth, occa- 

 sionally a few spiral liueations are observable, and a few small 

 malleations or indentations make the upper surface more or less 

 uneven. 



4. LrvixHACiA xiLOTiCA, Pfeiffer. 



Hab. Angoni-Land, south-west of Lake Xyasa {A. Whyte) : 

 Itawa, west of Lake Tanganyika (R. Cratvshaij). 



This species has a wide range, extending from the White Nile 

 district along the lake-region as far south as the southern end of 

 Nyasa, a distance of from fifteen to eighteen hundred miles. ]t 

 varies considerably in form. 



5. BuLiMixus (Eachis) stictus, Martens. 



Hab. Augoni-Laud (-1. Whyte). Tette, Mozambique {Martens). 

 A single typical example. 



6. LiMicoLAEiA m^vetexsi.vna, Smith. 



Hah. Sumbu, Itawa, S.W. of Tanganyika {R. Craivshay). 



