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Show 130 MR. G. NEVILL ON THE [Feb. 17, costulis haud acutis, subplaniusculis; anfract. 8, regulares, vix convexiusculi, ultimo majore, basi compresso, circa regionem acute carinato ; apertura recta, angustissima, quadriplicata plica parietali forti, conspicua, contorta, vix obliqua, plica profunda, valida, transversa, plicis palatalibus remotis, haud conspicuis ; peristom. album, continuum, solutum, perlate crasse reflexum, margine superiore valde intorto, cum margine angulum acutissimum formante; margine externo fere recto, supra medium dente pervalido munito, margine columellari recto. A very rare and curious form, with wonderfully contracted aperture, of which I could only find four specimens in deposit B. I have much pleasure in naming the species after m y friend M . P. Joly, of Algiers. The only other known species of this section of Pupa (Sphy-radium) is P. ferraria, Porro, a shell which, however, differs totally in its more obtusely conical spire, swollen above; in the Menton species the ovately cylindrical whorls increase regularly, the last one being the broadest; the umbilicus is deeper, and the carination round it more acute ; the sculpture, instead of being subregularly oblique throughout, is decidedly less oblique (nearly straight) on the last whorl than on the preceding ones, flexuous, and a trifle more crowded ; the aperture is markedly narrower, more everted, and more detached, with the peristome more thickly reflected and its upper margin peculiarly twisted, forming a very acute angle with the outer margin, which is straighter and provided with a much stronger tooth, reaching the centre of the aperture; both parietal and columellar folds more developed, the former more upright, more twisted, the latter buried so far back as to be seen with difficultv. Long. 4, diam. 1| millim. Type, Indian Museum, Calcutta; also in collection of M . Bourguignat. PUPA (SPHYRADIUM) AUSTENIANA, n. sp. (Plate XIII. fig. 9.) Testa aperte, minime profunde, et late umbilicata, conico-ovata, fulvo-cornea ; eleganter oblique costulata, costulisfiliformibus, acutis, perdistinctis, subdistantibus; apex obtusa, laevigata, anfr. S,prioribus 4 regulariter crescentibus, convexiusculis, et 7mo regvlaribus,perconvexis, turgidis, ultimo perirregulari, minore ac minus convexo, in medio linea impressa striato, infra subito minore, valde ascendente; apertura ascendens, per-eversa, triangularis, basi rotundata, marginibus callo fortejunctis margine externo late refiexo, supra medium valide impresso, intus paululum incrassato, margine columellari simplici, refiexo ac per-obliquo. This very curious form, named after m y friend Colonel Godwin- Austen, belongs to the section Pagodina of Stabile (Moll. Pie'mont, p. 100, 1864, type P. pagodula, Desmoulins) ; it was bv no means rare, though evidently very local, in deposits A and B only. The umbilicus is broadly and widely open, but is at the same time very shallow; the two obtuse apical whorls are smooth; the next two |