130 MR. G. NEVILL ON THK [Feb. 17, 



costulis haud acutis, subplaniuscvlis ; anfract. 8, regulares, viv 

 convexiusculi, ultimo majore, basi compresso, circa regionem um- 

 bilici acute carinato ; apertura recta, angustissima, quadriplicata ; 

 plica parietali forti, conspicua, contorta, vix obliqua, plica coin- 

 mellari profunda, valida, transversa, plicis palatalibus remotis, 

 haud conspicuis ; peristom. album, continuum, solutum, perlate ac 

 crasse reflexum, margine superiore valde intorto, cum margine ex- 

 terno unguium acutissimum formante ; margine externa fere 

 recto, supra medium dente pervalido munito, margine columellari 

 recto. 

 A very rare and curious form, with wonderfully contracted aper- 

 ture, of which I could only find four specimens in deposit B. I have 

 much pleasure in naming the species after my 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 

 beino- 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 witli difficulty. 

 Long. 4, diam. Ig milUm. 



Type, Indian Museum, Calcutta ; also in collection of M. Bour- 

 guignat. 



Pupa (Sphyradium) austeniana, n. sp. (Plate XIII. fig. 9.) 



Testa aperte, minime profunde, et late umbilicata, conico-ovata, ob- 

 tusa, fulvQ-cornea ; eleganter oblique costulata, costulis filiformibus, 

 acutis, per distinctis, subdistantibus ; apex obtusa, lavigata, cornea ; 

 anfr. 8,prioribus 4 regulariter crescentibus, convexiusculis, 5'", 6'" 

 et 7^° regularibtis, perconvexis, turgidis, ultimo perirregulari, mul- 

 tum minore ac minus convexo, in medio linea impressa striata, 

 infra subita minore, valde ascendente; apertura ascendens, per- 

 eversa, triangularis, basi rotundata, marginibus callo forte junctis ; 

 margine externa late reflexo, supra medium valide impresso, intus 

 paululum incrassato, margine columellari simplici, reflexo ac per- 

 obliquo. 

 This very curious form, named after my friend Colonel Godwin- 

 Austen, belongs to the section Pagodina of Stabile (Moll. Piemont, 

 p. 100, 1864, type P. pagodula, Desmoulins) ; it was by 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 



