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Show 580 MR. EDGAR A. SMITH ON LAND-SHELLS [May 2, 1. STREPTOSTELE COSTULATA Martens. Streptostele costulata, Martens, Weichth. Deutsch-Ost-Afrikas, p. 34, pl. ii. fig. 33. Hab. Nyika Plateau, 7000 feet. A single specimen may belong to this species. It agrees very closely with a typical example from Butumbi, but is rather smaller, more slender, and the whorls are rather higher in proportion to the width. 2. ENNEA (UNIPLICARIA) HAMILTONI Smith. Ennea hamiltoni, Smith in H. H. Johnston's ' British Central Africa,' p. 364 (1897). Ennea johnstoni, Smith, Proc. Zool. Soc. 1893, p. 633, pl. lix. fig. 1. Hab. Mount Zomba, 6000 feet; Malosa, 6000 feet. Tbe specimens from the latter locality are considerably larger than the types from Fort Johnston, the oblique sculpture is a trifle coarser, and the parietal denticle is entirely absent or only very faintly indicated. The form is variable, as shown by the following measurements : - Length 27J millim. Width 12. „ 24 „ „ 13. 3. ENNEA (GULELLA) LC-EVIGATA Dohrn. Ennea Icevigata, Dohrn, Proc. Zool. Soc. 1865, p. 232; Martens, Weichth. Deutsch-Ost-Afr. p. 21. Hab. Zomba Plateau; Masuku Plateau, 6000-7000 feet; Nyika Eange, 7000 feet; Mount Chiradzulu. Somewhat variable in size and in the development of the upper of the two labral teeth. This in the type is somewhat bifid or tuberculated as described by Dohrn, whereas in the specimens in the present collection it is simple, sometimes of the same size as the adjacent tooth, but sometimes a trifle larger. 4. ENNEA (G-ULELLA) VICINA, sp. nov. (Plate XXXIII. figs. 1, 2.) Testa breviter cylindracea, rimata, subpellucido-albida, oblique leviter striata, striis infra suturam distinctioribus 6i, convexi, ultimus penultimo angustior, pone labrum indentatus; apertura parva, ringens, dentibus pluribus tnunita ; dens parietalis magnus, lamelliformis, junctus; denies columellares tres, tres supra labrum, tres basin ; peristoma leviter incrassatum, expansum et refiexum. Longit. 7 millim., diam. 3k ; apertura 2\ longa. Hab. Mount Chiradzulu and Zomba Plateau at 5000 feet. Allied to E. triplicaria Martens, but differing in the labral teeth, and also in the almost total absence of a second parietal tooth. Although depicted in the figure, Martens does not mention |
