136 MR. G. NEVILL ON THE [Feb. 17, 



specimen Las only six whorls, the last markedly larger than any 

 of the others. 



Long. 7^, diam. (vix) 2 millim. 



Indian Museum, Calcutta. 



C^CILIANELLA, Sp. 



Four or five specimens from deposit F, apparently identical with a 

 unique specimen from Alassio. The first three whorls are more 

 convex ; and all of them increase more regularly than in the next 

 species. The last whorl is peculiarly evenly convex. 



Long. 4g, diam. l^ millim. 



Indian Museum, Calcutta. 



C^CILIANELLA (? MERIMEANA, Bourg.). 



A small form of five whorls with short spire and very convexly 

 swollen last whorl. Fairly abundant in the submaritime zone. This 

 may be the C. merimeana of Bourg., from Cannes (Desc. Moll. 

 Alpes-Marit., long. 6, diam. 1^ millim.), which, however, is described 

 as having six whorls. 



Long. 4|^, diam. 1^ millim. 



Indian Museum, Calcutta. 



Acme foliniana, G. Nevill. (Plate XIV. fig. 4.) 



Testa turrito-elongala, iwperforata, cornea, lavis et nitida ; spira 

 subrecta, pauhdum prope apicem obtusum eversa ; anfractus 

 6 out 6^ [j-arissime 7], convexiusculi, sutura distincta sepa- 

 rati, interdum inferne linea incisa {more Eulimidarum) circum- 

 dati ; apertura subcorticalis, svbquadrangularis, marginibus callo 

 Icevi junctis, columellari svbrecto ; peristoma album, percrassum, 

 duplex. 

 Type, anfr. &\, long. 5|, diam. 1^; apert. \\, lat. l^f^ millim. 

 This was an exceedingly abundant form, often in a perfect state 

 of preservation, in deposits A, B, and C. A few specimens had 

 7 well-developed whorls, the others 6 or 6|, increasing very 

 gradually and regularly, moderately convex, the last two approxi- 

 mate, of equal breadth ; apex blunt and obtuse ; the apical whorls 

 with a slight inclination to the right (away from the axis of the 

 shell) ; perfectly smooth, polishedj shining, of a more or less pale 

 horny colour, sometimes so transparent that the columella can be 

 traced from the apex to the' base ; suture distinct, with a more or 

 less obsolete incised line close below it, as in many species of 

 Eulima &c. ; aperture a trifle everted, subquadrate, with a remark- 

 able pure white callous rib close to the peristome, imparting a 

 duplex appearance to the latter ; a thin callosity joins the margins. 

 I have much pleasure in naming this, the giant of its genus, after 

 my friend the Marquis de Folin, of Bayonne, whose researches con- 

 nected with minute marine species are so highly valued and ap- 

 preciated. 



Type, Indian Museum, Calcutta ; also in coll. Marquis de Folin, 



