| OCR Text |
Show 1869.] MR. G. F. ANGAS ON NEW SPECIES OF HELICIDAE. 625 similar one at the periphery with a narrow dark chestnut line in the middle; spire conical, rather obtuse at the apex ; whorls 4\, slightly convex, the last descending in front, angled at the periphery; aperture diagonal, sublunar; peristome white, margins converging, the right scarcely flexuous, expanded, the basal one arcuate, reflexed. Diam. maj. 9, min. 8, alt. 8-jj*- lines. Hab. Guadalcanar Island, Solomon group. HELIX (GEOTROCHUS) DEIDAMIA, n. sp. (Plate XLVIII. fig. 3.) Shell perforate, turbinate, rather solid, shining, obscurely obliquely striated, yellowish olive, gradually becoming purple towards the apex, with an opaque white band joining the suture below ; spire convexly conical; whorls 6\, convex, attenuated at the upper part, the last non-descending, slightly angled at the periphery and a little flattened at the base; aperture diagonal, subovate; peristome purplish black, reflexed, right margin flexuous, excavated behind, columellar margin curved, sloping, and broadly covering the perforation. Diam. maj. 11, min. 10, alt. 14 lines. Hab. Ysabel Island, Solomon Group. In form this species nearly approaches H. acmella, Pfr.; but the spire is more turbinate and peculiarly contracted towards the apex, the last whorl is less convex, and the outer lip more flexuous. The painting, moreover, is entirely different, and uniform in all the specimens that have come under m y notice. HELIX (GEOTROCHUS) HARGREAVESI, n. sp. (Plate XLVIII. fig. 2.) Shell imperforate, turbinate, rather solid, obliquely faintly striated, creamy white sprinkled here and there with small purplish semi-pellucid spots, and ornamented with a narrow suffused chestnut band above and below the suture and a broader one at the periphery; spire turbinate, apex very slightly obtuse; whorls 6, a little convex, the last abruptly descending, convex below, with a broad suffused chestnut band in the middle ; aperture very oblique, truncately oval; peristome black, thickened, the right margin very slightly expanded and sinuous, the columellar margin a little reflexed, obliquely descending, spread over the body-whorl, and furnished within with a long straight callus. Diam. maj. 12, min. 10, alt. 10| lines. Hab. Bougainville and Shortland's Islands, Solomon group (Brazier). Varieties of this species occur in which the chestnut bands are wanting. HELIX (GEOTROCHUS) HERMIONE, n. sp. (Plate XLVIII. fig. 5.) Shell perforate, ovately conical, rather thin, very finely obliquely striated, purplish black, with a pale straw-coloured band below the periphery of the last whorl, and sometimes with a second band between the periphery and the suture; spire conical, apex rather obtuse ; whorls 6\, a little convex, the last angled at the periphery, |
