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Show 150 DR. J. C. COX ON NEW LAND-SHELLS FROM [Jan. 21, brown colour, profusely ornamented and zoned with opaque white apex almost black, transversely striated from left to right with very fine straight striae, which are decussated above with slightly undulating coarser striae from right to left, at the base these undulating striae becoming longitudinal; whorls 5, convex, suture deep ; base convex ; aperture rotundately lunar, dark chestnut within ; lip white ; margins somewhat approximating, joined by a thin callus ; upper margin broadly expanded, basal reflected, columellar margin triangularly dilated and reflexed, half concealing the umbilicus. Diam., greatest 0*87, least 0*71 ; height 0*68 of an inch. Hab. Solomon Islands. In my own collection. During the last few weeks large numbers of this shell have been obtained from one of our island traders. I was at first disposed to look upon it as a variety of Helix eddystonensis (Reeve) ; but the sculpture of this shell appears to me to be always coarser, and the surface invariably more or less covered with a thick white opaque enamel, unlike the thin epidermis which covers H. eddystonensis. Its dark, almost black, apex and white-zoned and irregularly ornamented body show in strong contrast, and resemble more some of the Philippine-Island species than any of those found at the Solomon Islands. This species is uniformly of a smaller size than H. eddystonensis, and is more solid and more raised in the spire. HELIX CRUSTULUM, sp. nov. Shell almost flat, with a broad shallow umbilicus, transversely arcuately striated, of a pale brown colour, with a light margin; whorls 6, slowly increasing in size, almost flat, last very sharply keeled ; suture margined ; spire scarcely raised ; base flat, a little raised round the umbilicus ; aperture very oblique, depressed, angularly lunate ; peristome simple ; margins very slightly approximating, blunted below, columellar margin not dilated. Diam., greatest 0*84, least 0*70; height 0*26 of an inch. Hab. Solomon Islands. Iu the collection of Mr. Hargraves, Sydney. HELIX (GEOTROCHUS) ZELINA, sp. nov. (Plate XVI. fig. 6.) Shell imperforate, pyramidally conical, transparent, thin, obliquely and very coarsely striated, straw-coloured ; whorls 7, almost flat, the last having a very sharp produced keel; suture broadly margined above; base flat; aperture trapeziform ; outer margin a little reflected ; peristome thickened and white, particularly the lower margin, which is a little everted and reflexed, columellar margin rather contracted and nodose. Diam., greatest 0*62, least 0*55 ; height 0*60 of an inch. Hab. Solomon Islands. In Mr. Hargraves's collection. This species is probably more closely allied to H. cineracea (Ilomb. et Jacq.) and //. subtecta (Pfr.) than to any other. It is a much more conical shell than these, and its sculpture decidedly |
