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Show 1883] LIEUT.-COL. GODWIN-AUSTEN ON SOCOTRAN SHELLS. 5 This species appears to be nearest to H. (Belgrandia) miliacea, Nevill (J. A. S. B. 1881, pi. vii. fig. 7), from Port Canning on the Mutlah, Sundabuns; but neither the operculum nor animal being known, it is difficult to place it in its correct generic position. I at first considered it a Bithynia. MELANIA TUBERCULATA, Miiller. (Plate II. figs. 5, 6.) Size :- Largest spec. Major diam. 9*8, alt. apert. 9*8, alt. axis 29*0 millim. „ 0*39, „ 0*39, „ 114 inch. Younger spec. „ „ 6*0, „ 6*0, „ 17*0 millim. „ 0*24, „ 0*24, „ 0*67 inch. This is a very widely distributed shell. Brot records it from the north, east, and west coasts of Africa, Madagascar and Mauritius, India and Ceylon, Syria, Persia, [Mesopotamia, Arabia, Siam ; Java and Malta (LsseT). MELANIA TUBERCULATA, smooth var. (Plate II. fig. 4.) The interior of the aperture is milky white, with no splashes or spotting of colour. Size:- Major diam. 8*0, alt. apert. 8*0, alt. axis 22*5 millim. 0*31, „ 0*31, „ 0*89 inch. Similar to fig. 11 c, pi. 26 of Brot's Monograph. MELANIA SCABRA, Miiller. (Plate II. fig. 1.) Shell turreted, solid ; spire high ; whorls 6, the last two angulate above ; aperture ovate. Size :- Major diam. 7*0, alt. apert. 7*0, alt. axis 16*4 millim. „ 0*28, „ 0*28, „ 0*65 inch. This shell is identical with specimens in m y collection from Kat-tiawar; it agrees, too, with fig. 14 b, plate 27 of Brot's monograph. The young shell (Plate II. fig. la), when from 2 to 3 m m . long, has 5 whorls, the spines only commencing to be formed on the fourth. The apex is rounded and smooth, caiination showing on the second whorl. The columellar margin is of a fine purple colour. A specimen in spirit, on being broken, was found to contain a dozen of the size above given. This is identical with the young of M. scabra from Kattiawar. MELANIA SCABRA, Miiller, var. (Plate II. fig. 2.) Shell elongately turreted, the last whorl smooth, the apical whorls being deeply sulcate, the intervening varices being very regular ; sculpture, spiral ribbing on the last whorl, finer above; colour pale ochraceous, with a few spottings and narrow stripes of dark ruddy brown ; spire high, attenuate, apex decollate ; suture impressed ; whorls'8, apex gone, probably 10 when complete, sides convex |
