1899.] FROM BRITISH CENTRAL AFRICA. 591 



Longit. 79 millim., diam. maj. 40 ; ajjertwa 35 longa, 19 lata. 



Hah. Nyasaland. 



The principal distinguishing features of this fine species are the 

 prolonged spire, the general form, and coarse granulation. As in 

 some other species, two varieties of coloration occur in the 

 present form. Some are white, clothed with a glossy yellowish 

 epidermis, here and there varied with darker oblique stripes, indi- 

 cating periods of growth. Other examples, however, are adorned 

 with more or less oblique dark reddish-brown wavy or zigzag-like 

 stripes, which are slender above, becoming broader below. Those 

 on the body-whorl coalesce inferiorly and form a rich brown patch 

 at the base or anterior end. The coarse granulation practically 

 ceases at the periphery, the spiral striae becoming less pronounced 

 below. 



42. AcHATiNA FRAGiLis, sp. nov. (Plate XXXV. figs. 3, 4.) 

 Testa ovata, sujyra acuminata, tenuissima, suhpellucida, jiavo- 



olivacea, concolor, vel rufo strigata ; spira hrevis, conica, ad 

 apicem suhobtusa ; anfractus 6-7, C07ivea:i, superiores 3 pallidi ^ 

 Iceves, duo sequentes iucrementi lineis striis spiralihus decussatis 

 granose scidpti, ultimus magnus, injiatus, infra medium hand 

 granidatus, lineis incremmti ohliquis curvatis fortibus ornatus ; 

 apertura inverse auriformis, ccerulescens, nitens ; columella 

 leviter arcuata, tenuis, callo tenuissima induta, antice anguste 

 truncata ; lahrum tenuissimum, nigro marginatum. 

 Longit. 75 millim., diam. 43 ; apertura 47 longa, 26 lata. 

 Hah. Nyika Plateau, 6000-7000 feet. 



This species is remarkable on account of its extreme thinness 

 and lightness. Some specimens are uniformly yc41o\vish olive, 

 with here and there a darker stripe, marking a period of growth, 

 whilst others, having the same ground-colour, are ornamented 

 with numerous oblique and slightly wavy red stripes. These 

 either extend the whole length of the body-whorl, or occasionally 

 disappear upon the lower half. The somewhat coarse regular 

 granulation ceases a little above the middle, but a few transverse 

 striae, not sufficient to form a regular granulation of the surface. 

 are traceable below. 



43. Ctclophortjs (Hijabia) intermedius Martens. 



Oydophorus intermedius, Martens, \ "Weichth. Deutsch-Ost- 

 Afrikas, p. 8, pi. ii. fig. 3, 



Hah. Masuku Plateau, 6000-7000 feet. 



Closely allied to C. (Hijabia) wahlhergi Krauss, from Natal, but 

 with the spire rather more elevated. 



44. PoMATiAS NYASANUS, sp. nov. (Plate XXXY. fig. 5.) 



Testa suhglobosa, turbinata, mediocriter umbilicata, pallide ru- 

 fescetis, zona infra peripheriam nigro-purpurea cincta, strigis 

 ohscuris arcuatis lividis in anfractu idtimo longitudinaliter picta^ 



