162 PROCEEDINGS OF THE ACADEMY OF [May-Oct., 



Hygromia folliculata Risso (67). This is correctly identified 

 by Mortillet and Bourguignat with Helix ciliata Venetz. It is found 

 in the environs of Nice, locahzed to the north of St. Andre. 



Helicella algira (L.) Risso (68). This is very common in the 

 Alpes-Mari times below 1500 meters altitude and in the Var below 

 900 meters. It never exceeds 45 mm. in diameter. 



Helicella albella (L.) Risso (68). The H. albella Draparnaud 

 is identified with the Helix explanata Miiller. It is now found only 

 on the right bank of the Var, very rarely, and seems to be on the 

 way to extinction. I have not found it in the quaternary beds of 

 the region. 



Helicella conica (Drap.) Risso (68). This is really Helix cornea 

 Draparnaud, broken and bleached by the loss of its epidermis. It 

 was referred to H. variahilis by Mortillet, and to H. lineata Olivi, 

 by Bourguignat. I have shown elsewhere that the latter species 

 does not exist in France. 



Helicella elegans (Drap.) Risso (69). Very common in the 

 lowlands near the sea. Risso's specimens belong to Helix scitula 

 Cristofori and Jan.*^ Bourguignat considered this species as a syn- 

 onym of Helix terrestris Pennant, but according to St. Simon, ter- 

 restris and elegans are distinct species. 



Helicella rupestris (Drap.) Risso (69). I have not found this 

 species near Nice, but it occurs on the Italian frontier on the banks 

 of the Roya, and also at the entrance to the gorges of the Cians. 



Helicella radiatus (L.) Risso (69). I have seen on his carton 

 only a slightly flattened variety of Helix rotundata Miiller. Bour- 

 guignat however regarded the species as a somewhat elevated variety 

 of Helix apicina Lamarck. 



Helicella solarium Risso (70). This is really Helix elegans 

 Draparnaud, already referred to. 



Helicella mamillata Risso (70). This is as remarked by Bour- 

 guignat, the Helix lapicida Linne, which is now confined to the right 

 bank of the Var, but which I have found fossil in the quaternary 

 deposits of Cape Martin near Mentone. 



Helicella varians Risso (70). On the carton labelled varians I 

 find two H. ciliata Venetz, and a very young Helix rotundata 



" Cf. Caziot, Bull. Soc. Zool. de France, XXXIII, No. 10, 1908. 



