40 Mr, A. G. Butler on Lepidoptera T. gracilis is indeed less differentiated in most points than T. callipygus ; the essential features of the genus are present, but in the structure of the arms and general shape of the cup the form before us is closely connected with the ordinary Dendrocrinite type. EXPLANATION OF PLATE I. A. Thenarocrinus callijnjgus, Bather. Fig. 1. 57478 h, B. M. Previously figured Ann. & Mag. Nat. Hist. ser. 6, vol. vi. pi. X. fig. 5, This shows the tegminal plates, which were not rendered by the lithographer, and the broad ventral sac. (Nat. size.) Fig. 2. 67478 n, B. M. Previously figured loc. cit. fig. 3. Shows fine branching of arms, a few tegminal plates, and, on the left, the base of the ventral sac ; in the stem is seen the trace of a radial suture. (Nat. size.) Fig. 3. Mr. C. B. Ketley's specimen. Shows anal area and base of ven-tral sac. Distally the arms are somewhat broken, disordered, and rubbed. The lower part of the cup is damaged by fracture. (Nat. size.) B. Thenarocrinus gracilis, sp. nov. Fig. 4. Specimen in York Museum. (Nat. size.) Fig. 5. The lower part of the same outlined to show arrangement of plates and stem-ossicles. (X 4.) IV. — List of Lepidoptera in a Collection made hy Emin Pasha in Central Africa. By Aethur G. Butler, F.L.S., F.Z.S., &c. The present collection consists of eighty species, chiefly of Rhopalocera ; only two of the species appear to be actually new to science, although several others have only been described comparatively recently. By far the greater number of the recognized species are identical with forms found in South Africa, and in all cases where closely allied representative forms occur in the south and west, the southern form is the one represented in the present collection ; the eastern element is very slightly indicated. R H P A L C E R A. Nymphalidae. ] . Tirumala petiverana. Dnnais limniace, var. jietivcranu, Doubledav, fJen. Pi urn. Lcp. pi. xii. iig. 1 (1?<-J7).
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