1880.] LAND-SHELLS OF MENTON. 117 



variably more depressed, of stouter texture than the preceding, less 

 brilliantly coloured, more often distinctly rimate than imperforate ; 

 apex acute, but less prominent ; whorls distinctly less convex, the 

 last one less expanded, less deflected at the aperture, with the 

 periphery subangulately compressed, and base much less convex ; 

 aperture smaller in proportion, outer margin more equally rounded, 

 the columella a good deal more oblique, with a conspicuous absence 

 of the subangulation at its termination, and without the slight twist 

 (or contortion) invariably found both in living specimens and in my 

 subvar. primitiva ; collumellar callosity less developed. 



Alt. 12i diam. 20 millim. 



Type var., Indian Museum, Calcutta ; also in coll. MM. Bour- 

 guignat, Coombe Williams, and Joly. 



Measurements from Pfeiffer (Mon. i. p. 284) : — Diam. maj. 23, 

 min. 19, alt. 12 miUim. 



Helix (Fruticicola) cemenelea, Risso. 



(= H. gallopruvincialis, Dupuy, 1848, not of Matheron, 842; 

 = H. cantiana auct., nee Montagu.) 



I cannot agree with Dr. Kobel and the Marquise Paulucci, who, in 

 her excellent and most useful catalogue, unites this and the form 

 called H. anconce by Issel as var. of H. canliana. I consider them 

 quite distinct. At Menton the latter is found from the neighbourhood 

 of the sea up to an altitude of at least 1500 feet; at 2500 feet to 

 4000 H. cemenelea takes its place, and, though varying a great deal, 

 always preserves its distinctive " facies " ! I have just been ex- 

 amining living typical English H. cantiana, Mont., and find both 

 shell and animal quite different ! I have identified both this and 

 the following, on the strength of M. Bourguignat's information. I 

 had previously separated them as quite distinct, taking this to be/T. 

 rubella, Risso, and the next to be B. cemenelea. 



Alt. I If, diam. 18 millim. " Berceau," at 3000 feet. 



Alt. 10. diam. 141 niiUim. " Grand Mont." 



Helix (Fruticicola) ancon^, Issel, Append. Moll. Pisa, 

 1872. 



A species differing still more widely from H. cantiana, Mont. ; to 

 me, nearer H. carthusiana, Miiller. It appears to be a common 

 littoral form in Lignria ; I found it at Monaco, Menton, Alassio, &c. 

 I cannot consider it identical with the preceding ; even if it were to 

 prove specifically so, it must still be regarded as a very distinct and 

 constant variety. The animal is of a light and bright carnation-orange 

 colour, with small and indistinct furrows, tentacles of a dull vinous 

 shade, sole of foot yellow ; seen through the shell the animal has a 

 deep vinous appearance, mottled with yellow ; axis of spire less 

 central ; whorls less elevated, more rapidly increasing, less convex ; 

 substance a good deal thicker, peristome much more coloured ; um- 

 bilicus considerably less open ; aperture more produced ; columella 

 more oblique &c. 



Alt. 1 H, diam. \.()\ millim.; another — alt. 9, diam. 15^ millim. 



