MOLLUSGA GASTEROPODA. 



GASTEROPODA INOPERCULATA. 



§ I. — PULMONACEA. 



ARIONID^. 



Limax (pars), Linnœus, Syst. nat., 1758; Brard, 

 1815; Arion (pars), Férussac , Hist. Moll. , p. 50 et 

 63, 1819; Arionidae Bourguignat, 1864; Jules Mabille, 

 1868. 



ARION. 



Limax (pars), Linnœus, Syst. nat. (éd. X), p. 652, 

 1758 et 1760; — Miiller, 1774; — Gmelin, 1790 ; 

 Cuvier, 1790, 1806, 1817; — Lamarck, 1801, 1809, 

 1822; — Drapammid, 1801, 1805 ; — Brard, 1815; 

 — Arion, Férussac (pars), Tabl. syst., p. 16, 1819 ; — 

 Michaud, 1851 ; — Moquin-Tandon, 1855; — Arion, 

 Bourguignat, 1862, 1864. 



Animal corpore ovato-elongalo, cylindraceo, anlice posliceqiie 

 pauliilum allenuato, superne rotundato, rarius carinalo, ac rugis 



1 



