372 Dr. A. G. Butler on This species may be distinguished from G. carinatus, Pennant, by its more rounded, less angular whorls, longer and straighter columella, and yellow-tinged mouth. Between tlie spiral ridges appear numerous fine lirse, crossed by fine close-set laminae, from which character I propose the name. XLII. — On Butterflies collected between Chinde and Mandala^ British Central Africa, hy Edward M. de Jersey, Esq., in March and April, 1899. By A. G. Butlek, Ph.D., F.L.S., F.Z.S., &c. The collection of which this is an account is not a very large one, but contains some interesting forms of Acrcea, three males of Mylothris Riippellii, and several other species of less interest. The following is a list of the species : — Nymphalidse. 1. Limnas chrysippus, Linn. S S ^ > Mandala, llth April, 1899. 2. Melanitis ismene, Cram. $ , between Chiromo and Katunga, 6th Aj)ril, 1899. " Did not seem to leave dark thick bush : had to be driven out." 3. 8amanta perspicua, Trimen. S Sy Mandala, llth April, 1899. Both specimens belong to the typical wet-season phase, but the irides of the ocelli are very narrow and smoky. Prof. Aurivillius still doubts, as I did at first, that S. Simonsi is the dry form of this species ; but we have an intermediate example, received from Portuguese East Africa, and that, I think, should settle the question beyond all dispute. 4. Neoccenyra ypthimoides, Butler. S S ^ , Mandala, lOtli and llth April, 1899. We recently had an example of N. victories, Auriv., given to us by the Rev. A. Dewar, who obtained it in company with iV. ypthimoides on the Stevenson Road on the plateau between Tanganyika and Nyasa; it is quite distinct from iV. eatensa, having much more the outline of N. Gregorii.
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