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Show 1891.] MR. E. A. SMITH ON NEW SPECIES OF SHELLS. 491 totius y adcequans; peristoma tenue, marginibus callo tenui junctis, exteriore simplice, columellari anguste reflexo. Longit. 7 millim., diam. maj. 3§ ; apertura 3 longa, 2 lata. Hab. Lugunor Island, Mortlock group of the Caroline Islands, also at Iris Island of the Rouk group (Brazier). The reddish specimens, which are well marked with wavy lines and blotches of opaque white, are extremely pretty. Some specimens are almost entirely devoid of markings, being of a uniform pale horn colour, and when this painting is present it is invariably less conspicuous on the lower part of the body-whorl than above. The spiral strige referred to in the preceding diagnosis are very feeble and only noticeable under a powerful lens. DONAX BRAZIERI. (Plate XL. figs. 10, 10 a.) Testa trigona, antice anguste rotundata, postice et superne angulata, valde incsquilateralis, albida vel grisea, umbones versus interdum livida vel lilacea, obsolete biradiata ; area valvarum antica polita, radiatim tenuiter striata et prope angulum posticum subacutum concentrice rugose striata, postica carina circumscripta, radiatim tenuiter lirata, lirisque transversis leviter fiexuosis granose cancellata; pagina interna polita, margine inferiore (interdum quoque postico) crenulato, lilaceo-fusca, albida vel fuscescens, versus marginem pallida, radiatim tenuiter substriata ; linea pallii profunde et late sinuata. Longit. 13 millim., alt. 10, diam. 6. Hab. Rocky Point, four miles north of Richmond River, New South Wales. Mr. Brazier observes respecting this species : - " I have never found this alive on any part of the coast, and suppose it to be a very deep-water species, as it is met with only after gales." It is remarkably triangular, and occasionally almost quite equilateral. The posterior area of the valves is not glossy like the anterior and much more strongly sculptured. This coarser sculpture, however, just passes over the sharp angle which separates the two areas. The colour is variable both externally and within; but usually it is pale, with an indication of two broad rays, one near the angle and the other more towards the front. I have much pleasure in associating this pretty species with the name of its discoverer. EXPLANATION OF PLATE XL. Fig. 1. Conus innotabilis, p. 487. 2. Mitromorpha brazieri, p. 487. 3. Littorina acutispira, p. 487. 4. Littorina infans, p. 488. 5. Helix (Papuina) agnocheilus, p. 488. 6. Placostylus guppyi, p. 489. 7. Placostylus cuius, p. 489. 8, 8 a. Pupina brenchleyi, p. 490. 9, 9 a. Omphalotropis carolinensis, p. 490. 10, 10 a. Bonax brazieri, p. 491. |