1899.] FKOM BRITISH CBNTEAL AFBICA. 581 



the two small df'nticles at the base of the aperture rather far 

 within from the margin. These occur also in the present species 

 in the same position. The teeth on the columella are divergent 

 and situated on a prominence. Those on the outer lip might be 

 described as two in number, whei'eof the upper is somew'hat 

 irregularly bipartite. 



5. Ennba (GtULELla) fobtidentata Smith, var. 



Ennea fortidentata, Smith, Ann. Mag. Nat. Hist. 1890, vol. vi. 

 p. 162, pi. vi. fig. 6 ; Martens, Weichth. Deutsch-Ost-Afr. p. 21. 



Hah. Nyika Eange, 7000 feet. 



Generally a trifle stouter than the typical form from Mamboia, 

 and without the minute parietal tooth above the columella. 



6. Ennea (Gulella) varians, sp. nov. (Plate XXXIII. 

 figs. 3, 4.) 



Testa cylindracea, rimata, pellucida, albida, oblique tenuiter costu- 

 lata ; anfraetus 8, lente accrescentes, suiura profunda leviter 

 obliqua sejuncti^superiores duo {protoconcham constituentes) IcBves, 

 conveivi, cceteri convexiuscidi ; idtimus duobus prcecedentibus 

 angustior, pone Jabrum indevtatiis ; apertura parva^ intus 

 quadridentata ; devs parietalls unicus lamelliformis, prominens^ 

 dextrorsvm, concavus, prope lahrum sitits, alius paido minor 

 supra medium labri, tertius minimus ad basin aperturce, quartus 

 columellaris, maximus ; peristoma utrinque expansum, sub- 

 reflexum, leviter incrassatuin. 

 Longit. 6 millim., diam. 2; apertura fere 2 longa. 

 Hah. Mount Chiradzulu and Zomba Plateau, 5000 feet. 

 The parietal lamellar tooth is short, not extending far within, 

 and the columellar fold is broad, jutting out prominently across 

 the aperture. Another example in rather bad condition is some- 

 what longer, having a length of 7g millim., although consisting of 

 the same number of whorls. 



The two specimens from the Zomba Plateau are smaller, shorter, 

 and have only seven whorls. In other respects they agree pre- 

 cisely with the type. Length 5 millim., diam. 2. 



7. Streptaxis johnstoni, sp. nov. (Plate XXXIII. figs. 5, 6.) 

 Testa ovata, parum obliqua, rimata, albida, lineis incrementi 



obliquis tenuissimis striata ; anfraetus 6g, convexi, infra suturam 

 crenulati, ultimus paulo descendens ; apertura obliqua, longit. 

 totius ^fere cequans ; peristoma vix incrassatum, leviter expan- 

 sum, margine columellari rejlexo. 

 Longit. 10 millim., diam. 6| ; apertura 4| longa. 

 Hab. Nyika Eange and Zomba Plateau. 



Allied to S. dentimlatus Dohrn and S. pusillus Martens. The 

 so-called " Ennea vitrea " of Morelet from Angola is also very 

 similar, yet distinct. 

 Pboo. Zfooi,. Soc— 1899, No. XXXVIU, 38 



