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Show 1876.] MR. G. F. ANGAS ON N E W HELICES. 267 HELIX MORESBYI, n. sp. (Plate XX. figs. 8, 9.) Shell umbilicated, globosely conical, moderately solid, finely and irregularly obliquely striated, fulvous chestnut, paler at the apex, with various broad and narrow bands of deep brown, darker below the sutures ; spire conical ; whorls 6, convex, the last somewhat flattened at the base and excavated towards the umbilicus ; aperture oblique, sublunate, within glossy and of a pale purplish hue, lips black, margins approximating and joined by a thin callus, outer margin expanded and subreflexed, columellar margin dilated, partly concealing the umbilicus. Diam. maj. 23 min. 14, alt. 23 lines. Hab. Port Denison, Northern Queensland. In its general character this species comes nearer to H. yulei, Forbes, than to any other ; but it differs in being larger, very much more conical, and in having the base of the last whorl peculiarly flattened. HELIX RHODA, n. sp. (Plate XX. figs. 10-12.) Shell deeply and profoundly umbilicated, depressedly convex, moderately solid, finely obliquely irregularly striated, fulvous brown, scattered with pale, diaphanous, oblique stripe-like spots, with a suffused brown band below the suture, and another darker and narrower band above it, also a narrow dark band on either side of the keeled periphery; spire depressedly conical, apex obtuse ; sutures narrowly margined ; whorls 6, convex, the last not descending, moderately keeled at the periphery and a little flattened at the base; aperture oblique, truncately ovate, right margin rather sinuous, very slightly expanded and subreflexed, the basal a little thickened, somewhat reflexed, and white. Diam. maj. 10, min. 9, alt. 5 lines. Hab. San Christoval, Solomon archipelago. This shell belongs to the Trochomorpha group, its nearest ally being H. merziana, Pfr. HELIX ANGASIANA, Pfr. (not Newcomb, in Ann. Lyceum Nat. Hist. N e w York). This characteristic species (first described in the French ' Journal de Conchyliologie,' 1862, p. 228, by Dr. Pfeiffer, from a dead and bleached specimen in a chalky condition, that was sent home by me from the neighbourhood of Lake Torrens, in the interior of South Australia) has been the cause of some confusion amongst concholo-gists, which I desire to rectify. On my subsequently obtaining living specimens of this species from the same locality I wrote to M. Crosse, the editor of the Journal, stating that the diagnosis should be modified, the specimen figured having lost all its colour and become thickened by exposure to the influences of the atmosphere. This note was published by M . Crosse in the Journal for 1863, in which the colours of the living shell were given. Notwithstanding this, Dr. Cox, of Sydney, in his 'Monograph of the Australian Land Shells,' states that M . Crosse is mistaken, and that the |
