OCR Text |
Show 1899.] FROM BRITISH CENTRAL AFRICA. 591 Longit. 79 millim., diam. maj. 40 ; apertura 35 longa, 19 lata. Hab. N}^asaland. 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, indicating 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 interiorly 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, supra acuminata, tenuissima, subpellucida, fiavo-olivacea, concolor, vel rufo strigata; spira brevis, conica, ad apicem subobtusa ; anfractus 6-7, convexi, superiores 3 pallidi, Iceves, duo sequentes incrementi lineis striis spiralibus decussatis granose sculpti, ultimus magnus, infiatus, infra medium haud granulatus, lineis incrementi obliquis curvatis fortibus ornatus apertura inverse auriformis, ccerulescens, nitens; columella leviter arcuata, tenuis, callo tenuissimo induta, antice anguste truncata ; labrum tenuissimum, nigro marginatum. Longit. 75 millim., diam. 43 ; apertura 47 longa, 26 lata. Hab. Nyika Plateau, 6000-7000 feet. This species is remarkable on account of its extreme thinness and lightness. Some specimens are uniformly yellowish 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 stria?, not sufficient to form a regular granulation of the surface. are traceable below. 43. CYCLOPHORUS (HIJABIA) INTERMEDIUS Martens. Cyclophorus intermedius, Martens, \ Weichth. Deutsch-Ost- Afrikas, p. 8, pl. ii. fig. 3. Hab. Masuku Plateau, 6000-7000 feet. Closely allied to G. (Hijabia) wahlbergi Krauss, from Natal, but with the spire rather more elevated. 44. POMATIAS NYASANUS, sp. nov. (Plate XXXV. fig. 5.) Testa subglobosa, turbinata, mediocriter umbilicata, pallide ru-fescens, zona infra peripheriam nigro-purpurea cincta, strigis obscuris arcuatis lividis in anfractu ultimo longitudinaliter picta, |