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Show 170 MR. G. F. ANGAS ON NEW AUSTRALIAN SHELLS. [Mar. 6, MIMEUPLOSA RHADAMANTHA, n. sp. Wings above rich chocolate-brown, becoming slightly purplish towards outer margin ; primaries with a broad subquadrate white patch over the end of the cell; immediately below the latter and upon the second median interspace a fusiform white streak ; three submarginal white dashes towards the external angle ; a lilac dot at base; secondaries with the internal half of the basal third occupied by a large white patch ; body dark brown ; front of head and back of collar dull blue; anal half of abdomen blue-shot: wings below nearly as above ; body brown, laterally spotted with white, venter shot with blue ; legs brown above, pearly white below; expanse of wings 2 inches, 6 lines. Hab. Sarawak (Low). Resembles the female of Calliploea rhadamanthus, which occurs with it in Borneo ; I know of no other Moth at all nearly allied to it. 4. Descriptions of a new Species of Bulimus from Western Australia, and of a Paludinella from Lake Eyre, South Australia. By G E O R G E F R E N C H A N G A S , F.L.S., C.M.Z.S. [Received February 19, 1877.] (Plate XXVI.) BULIMUS PONSONBII, n. sp. (Plate XXVI. fig. 1.) Shell imperforate, elongately ovate, solid, shining, everywhere marked with very fine decussated transverse striae crossing the lines of growth, rich olive-brown without any markings, paler towards the apex; whorls 5, slightly convex ; spire conical, blunt at the apex ; aperture pale lilac within, longer than the spire, wider towards the base; outer lip simple ; columella arcuate, the margins united by a strong spreading callus. Long. 2 inches 2 lines, lat. 1 inch. Hab. Western Australia. This species appears to have been hitherto overlooked by authors, or confounded in some unaccountable manner with the Bulimus atomatus of Gray, from New South Wales, from which it is altogether distinct. I found three examples in the British Museum labelled B. atomatus, var., with a note on the back of the tablet stating that they were obtained by Mr. John Gould in Western Australia in 1839. Mr. J. H. Ponsonby, having lately shown me a specimen from his collection, drew my attention to the species, which I have much pleasure in naming after him. PALUDINELLA GILESI, n. sp. (Plate XXVI. fig. 2.) Shell perforate, globosely turbinate, rather thin, pale orange, |