OCR Text |
Show 044 DR. J. COX ON NEW LAND-SHELLS. [Nov. 7, aperture of a deep orange-red, columella light; colour reddish orange, conspicuously ornamented throughout the whole length of the whorls, especially the last, with dark chestnut (almost approaching to black) lightning-like markings, two or three of which are broad, bifurcated above, and shaded off at the edges, others are in thin linear zigzag streaks. Length 2*45, breadth 1*05 of an inch. Hab. Bass's Straits. I have described this fine species, at the request of Mr. Richmond Thatcher, from a fine specimen handed to me by him. This will make the third species of Volute which this gentleman has brought to light. PARTULA PEASEI, sp. nov. (Plate LII. fig. 2.) Shell deeply and openly umbilicated, ovately conical, very broadly inflated towards the base; spire short, broadly conical; whorls 5, convex, last rapidly increasing in size and inflated; suture impressed ; aperture squarely ovate, obliquely produced, lip and columella white, thickened, and broadly reflected, interior of aperture orange-red ; covered with a striated dark chestnut epidermis. Length 0*94, breadth 0*70 of au inch. Hab. Solomon Islands (Rainbird). I have named this in honour of Mr. Harper Pease of Honolulu. BULIMUS SELLERSI, sp. nov. (Plate LII. fig. 3.) Shell rimately umbilicated, fusiform, thin, smooth, longitudinally finely striated, and transversely very minutely obsoletely striated towards the apex, apex granularly punctate; opaque, diaphanous, shining, an impure white colour ; spire acutely turreted, apex obtuse ; whorls 5, the last equalling two-thirds the length of the shell, suture submargined; aperture oblong, white within; peristome margined with a dense white, opaque, flat, porcellaneous margin very slightly everted; columella dilating into two pillars, one inserted and gradually lost on the last whorl, the other spirally entering the aperture as a prominent thin plate. Length 1*90, breadth 0*66 of an inch. Hab. Gaudalcanar Island, Solomon Islands. Evidently belonging to the same group as B. miltocheilus, Reeve. Among the many specimens obtained I find no important variation. HELIX ANDERSONI, sp. nov. (Plate LII. fig. 4.) Shell imperforate, rather thin, depressedly globose, finely striated, yellow-brown, with three or more rather narrow dark chestnut bands round the centre and lower part of the body-whorl, and one beneath the suture; whorls 6g, almost flat, gradually increasing in size; aperture diagonal, elongately lunately rounded, lip dark, as is also the covered umbilicus ; margins converging, thin, slightly expanded, columellar margin triangularly dilated, adnate, occluding the umbilicus and sunk below the marginal line of the aperture, causing the latter to be sharply angled. Diam., greatest 1*34, least 1*10; height 0*80 of an inch. |