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Show 1880.] LAND-SHELLS OF MENTON. 135 is open to doubt. The first 3 or 3} whorls increase very slowly and regularly, the last being, especially above, very tumidly, almost globosely swollen, giving it a pyriform appearance ; in F. gronoviana &c, on the contrary, it is near the base that the whorl is most tumid. The aperture is unusually long, rather narrow; the outer margin scarcely convex, gradually rounded at base, no trace of any callosity joining margins ; tbe columella is quite of a different type. In even very young specimens of F. gronoviana it is distinctly callose, is never evenly, spirally, strongly twisted as in F. (?) abnormis, but is nearly straight, only slightly though distinctly twisted, there being invariably two of these folds. The hyaline greenish texture is also quite different from the transparent horny brown of its ally. The characters of the columellar spiral fold are almost exactly represented by the figure of Streptostyla flavescens, Shuttl. Notit. Malac. ii. 1878, pl. v. fig. 7, the shell generally of which is also not generically unlike. Can it be that the specimens I found at Blida and Menton prove the genus Spiraxis, hitherto supposed to be restricted to the N e w World, to exist also in Europe ? Long. 6, diam. 3^ millim. Type, Indian Museum, Calcutta. CECILIANELLA EBURNEA, Risso. (As figured by Bourg. Moll. Alpes-Marit. par Risso, pl. i. figs. 20-22, long. 6, diam. 1^ millim.) Not very uncommon in the submaritime zone onlj-; it occurred also at Alassio. I found it also, apparently subfossil and fairly abundant, in deposit B. Of course it is possible, from the habits of this mollusk, that these specimens may be recent. I never found the genus actually imbedded in rock, as most of the other founs occurred occasionally, though I especially looked out for it. Mr. Williams did not find the genus in what I call the subalpine zone. Long. 6, diam. 1} millim. Indian Museum, Calcutta. C^ECILIANELLA, sp. (?) Not uncommon towards the base of the Grimaldi Hill. A compressed narrow form, of a peculiar green colour. I dare not describe any species of this genus, as 1 unfortunately do not possess typical specimens of any of M . Bourguignat's species. This may prove to be C. acicula or C. liesvillei, &c. Long. 4, diam. 1| millim. Indian Museum, Calcutta. C^lCILIANELLA, 11. Sp. ? I procured a single very fiue specimen of this well marked form, apparently subfossil, from deposit B. The C mauriana of Bourg., from Cannes (Desc. Moll. Alpes-Marit., long. 7, diam. If millim.), must be somewhat similar, but is described as having eigUt whorls, the last scarcely bigger than the penultimate one. M y Menton |