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Show 670 MR. J. BRAZIER ON NEW AUSTRALIAN SHELLS. [Dec. I, whorls 4|, increasing rapidly, last large, flattened, spirally keeled, with one above and one below the periphery, the space between them having a hollow appearance ; umbilicus large, with a keel surrounding it; aperture oblique, circular ; peristome simple, thin, acute. Operculum horny yellow, thin, concave, multispiral. Diam. maj. 1, min. f, alt. f lin. Hab. Fitzroy Island, north-east coast of Australia; found under wood, near a freshwater stream (coll. Brazier). This interesting species belongs to the new subgenus Ditropis of Blanford ; it reminds one of a miniature Tropidophora cuvieriana or T. tricarinata, with its prominent keels. I have named it after Mr. White, F.R.A.S., Astronomer, of Melbourne, Victoria. *6. DIPLOMMATINAGOWLLANDI. (Plate LXXXIII. figs. 19-21.) Shell dextral, rimate, acuminately oblong, white, hyaline, finely and obliquely ribbed, interstices smooth; spire conical, apex acute, sometimes decollated; whorls from 6 to 7, sometimes 9, the first three forming the apex are regular and tapering, the fourth broad, the fifth longer and broader, the sixth very small, having a pinched or distorted appearance in front, the seventh or last extends nearly up to the suture of the sixth ; aperture vertical, subcircular ; peristome thin and broad ; margins continuous, shining, the outer broadly expanded, the columellar margin thick, straight, slightly channelled in front, tooth within minute. Diam. maj. \\, min. |, alt. \ lin. Hab. Fitzroy Island, north-east coast of Australia ; found at the root of a large tree, crawling upon the grass (coll. Brazier). This curious species differs from any of tbe Diplommatina that I have met with, the first three whorls forming the apex being regular and tapering, the fourth a little broader, the fifth still longer and broader, the sixth having a pinched-in appearance, while the last is large, giving the shell a most distorted aspect; the greatest breadth is at the fifth whorl, the least at the sixth. The few hundreds that I collected are all of the same description. I have named it after m y late lamented friend John Thomas Ewing Gowlland, Staff-Commander R.N., who was unfortunately drowned while surveying in Port Jackson, August 1874, and who was in charge of the steamer that conveyed the Eclipse Expedition to Cape Sidmouth. *7~ GEORISSA MULTILIRATA. (Plate LXXXIII. figs. 8-10.) Shell imperforate, globosely conical, reddish brown, strongly spirally striated, interstices rather rough, shining; whorls 4, roundly convex, suture channelled; spire conical, apex papillary, base convex, very finely marked with spiral lines; aperture vertical, lunate ; peristome thickened ; columellar margin straight, thickened, with a white callus around the perforation, which is hollowed out. Operculum shelly, ovate, smooth, brownish, with a long pointed shelly protuberance on the underside or place of attachment to the animal. Diam. maj. |, min. ^, alt. 1 lin. |