1899.] FEOM BRITISH CENTRAL AFE.ICA. 585 



ultimus ad perijplieriam acute angulatus et carinatus ; apertura 

 oblique angulato-lunata ; peristoma tenue, viargine coliimellari 

 supra late expanso et rejlexo. 

 Diam. niaj. 12 millim., min. 10, alt. 7. 

 Hab. Masuku Plateau, 6000-7000 feet. 



More widely unbilicated than M. mozambicensis, less sharply- 

 keeled, much more delicately sculptured above, &c. The lower 

 surface is more glossy than the upper, which has a silky 

 appearance in nicely washed specimens, 



21. Martensia mozambicensis Pfeiffer. 



Helix mozambicensis, Pfr. Proc. Zool. Soc. 1855, p. 91, pi. xxxi. 

 fig. 9; Martens, Welch th. Deutsch-Ost-Afrikas, p. 46, as Martetisia 

 (synonymy and references). 



Hab. Masuku Plateau, 6000-7000 feet ; Zomba Plateau, 5000 

 feet ; Nyika Eange, 7000 feet ; Mount Chiradzulu. 



Widely distributed in East Central Africa, and varying in height 

 of spire, strength of sculpture, convexity of whorls, &c. 



22. Phasis (Teachtcystis) eusco-coenea, sp. nov. (Plate 

 XXXin. figs. 35, 36.) 



Testa depressa, orbicularis, mediocriter umbilicata, tenuis, pallide 

 fusco-cornea, ejndermide conspicue pilosa induta j spira fere 

 plana, apice vix elato ; anfractus 4|, convexiusculi, sutura pro- 

 funda sejuncti, sublente accrescentes, rugose striati et punctati, 

 ultimus antice leviter descendens, ad peripheriam obtuse sub- 

 angulatus ; apertura obliqua, late lunata ; peristoma tenue, 

 margine columellari ad insertiotiem dilatato et leviter i^ejlexo. 



Diam. maj. 9 millim., min. 7|, alt. 5. 



Hab. Zomba Plateau, 5000 feet. 



The hairs of the periostracum are rather long, and when rubbed 

 off the surface has a rough pitted appearance. 



23. Phasis (Teachtcystis) eusco-olivacba, sp, nov. (Plate 

 XXXin. figs. 37, 38.) 



Testa P. fusco-corneae similis, sed minor, fusco-olivacea, ayigustius 

 umbilicata ; anfractibus 4|, minus convexis, sutura minu^ pro- 

 fundus sejunctis, ultimo vix descendente. 

 Diam. maj. 7 millim., min. 6, alt. 3|. 



Hab. Masuku Plateau, 6000-7000 feet; Nyika Plateau, 7000 feet. 

 When the hairy periostracum is rubbed off, the surface above 

 and below exhibits lines of growth and spiral striation. 



24. Teochozonites shaepei, sp. nov. (Plate XXXIII. 

 fig. 39.) 



Testa elate conica, ad peripheriam carinata, anguste perforata, 

 tenuis, nitida, flavescenti-cornea, lineis increment} tenuibus 

 obliquis sculpta ; spira producta, subconcava, ad apicem obtusa ; 

 anfractus 7^, lente accrescentes, apicales perconvexi, cceteri sensim 

 minus rotundati, supra suturam filo-carinati, ultimus in medio 



