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Show 112 MR. G. NEVILL O N T H E [Feb. 17, Var. SUBNEMORALIS, nov. Ad H. nemoralem magis affinis; spira depressa, ultimo anfractu compresso, subtus applanato, gradatim descendente; apertura oblonga, producta, minus alta, margine externo gradatim rotun-dato, peristomate perlate refiexo. Diam. 28|, alt. 20|; apert. (cum perist. ac callositate colum.) alt. 15, lat. 17\ millim. Type var., Indian Museum, Calcutta. A rather uncommon, more depressed variety, from deposit B only ; generally ornamented with a single very vivid broad band traceable along the suture of the last two or three whorls. I need scarcely say I have named this species after m y friend Mr. T. B. Coombe Williams, whose name occurs so frequently in these pages. Var. SPANIAS, nov. Sat tenuis, globosa, depressa, vix nitida aut polita; irregulariter striata, distincte malleata; indistincte zonata, zonulis subobso-letis; spira depressa, ultimo anfractu ventricoso-rotundato, lente gradatimque descendente, subtus convexo ; apertura ampla, sub-ovalis, peristomate parum refiexo, locum umbilicalem callo tenui tegente. Diam. 27\, alt. 19 ; apert. lat. 16|, alt. 15 millim. This well-marked form, with more convex base and less solid texture &c, regarded by M. Bourguignat as a distinct species, was rather uncommon ; I found it only in deposits A, B, C. Type var., Indian Museum, Calcutta; also in the collection of M . Bourguignat. HELIX (TACHEA) NEMORALIS, Lin. Not found at all in the submaritime zone, but common enough as soon as one reaches an altitude of 1500 to 2000 feet, up to the very summits of the mountains (4000 feet), where it is of very thin texture ; varieties of 4 to 5 or a single band on the last whorl appear commonest. I found four or five specimens, in poor preservation unfortunately, in the " Couche marneuse " of Cape Mortela, from apparently the zone of H. paretiana ; they are probably a variety of H. nemoralis, though apparently differing somewhat. Diam. 26\, alt. 21; apert. lat. 15, alt. 14 millim. From " Grand Mont," at 4000 feet. Diam. 27, alt. 20; apert. lat. 16, alt. 14\ millim. From "Berceau," at 3200 feet. Diam. 22, alt. 16; apert. lat. \Z\, alt. 11| millim. From near Monaco. Diam. 24 j, alt. 18|. Subfossil, from Cape Mortela. Measurements below from Pfeiffer, Mon. i. p. 276: Diam. maj. 25, min. 21, alt. 15 millim. HELIX (POMATIA) ASPERSA, Miiller. The variation in size, according to the altitude at which this |