1880.] LAND-SHELLS OF MENTON. 121 



new species, immediately above the spot I call deposit B ; but in no 

 case could I find a specimen undoubtedly associated with the species 

 of this deposit ; it may be that they are of the same age, only that 

 they were not living immediately mixed up with these other mol- 

 lusks. After a long and tedious investigation I have come (though 

 somewhat doubtfully) to the opposite opinion ; I believe they are 

 of a more recent age, and have been buried through some altogether 

 different cause. 1 purpose giving a full description and figure at 

 some future time, as I wish to compare the species of this group 

 with my Spanish, Algerian, and Corsican specimens, which are not 

 at the moment available. 



Alt. 10, diam. I8| millim. 



Type, Indian Museum, Calcutta. 



Helix (Xerophila) terveri (?), Michaud. 



I think there is little doubt this is the species living specimens 

 of which, from Toulon, were described and figured under the above 

 name by M. Rambur (Journ. Conchyl. 18b9). It does not exist 

 now at Menton, where varieties of H. cespitum have taken its place ; 

 I found it, however, subfossil and by no means uncommon near 

 Roquebrune station, near deposits B and D, and in the lower 

 stratum at Cape Mortela, immediately associated with H. pare- 

 tiana. 



Alt. 11|. diam. 19 millim. 



Var. SUBARENARXJM, nov. 



A larger and more globose form, very likely specifically distinct, 

 of which I found a ievr specimens onlv, subfossil. 

 Alt. 14, diam. 2\\ millim. 

 Both the preceding forms, Indian Museum, Calcutta. 



Helix (Xerophila) sclera, n. sp. 



T.ad'Q. cespitum et H. Terveri ff^/u-s; conico-elevata, perangusie 

 profundeque umbilicata, solida ; alba {aut cretacea), zonulis 

 variis circumscripta, ajnce corneo ac notabiliter acuto; anfract. 

 7, convexiuscuU, sutura perimpressa se-parati, ultimo tnajore, 

 rotundato, basi convexo, prope aperturam celeriter descendente 

 ac vix dilatato ; apertura haud producta, fere rotundata, mar- 

 gine externa convexo; superne regulariter confertim striata, 

 striis obliquis, subjlexuosis et planiusculis. 

 Alt. 13|, diam. 19 millim. 



Another very distinct species of the same group; the least openly 

 umbilicate, with the most subconvexly raised spire and the most 

 prominently acute apex of any I know ; the rapidly descending, 

 scarcely dilated and rounded last whorl, as also the more distinct, 

 subflexuous sculpture are also apparently constant characters ; it 

 only occurred, subfossil, imbedded in hard and solid rock, in 'the 

 upper surface of deposit E, evidently associated with Stenogyra 

 decoUata. 



Type, Indian Museum, Calcutta. 



