ARTON 157 



1821. Limacia : Hartmann, Neue Alpina, i, p. 208. 

 1853. Ario [err. tyi).], Ferussac : Panescjorse, Prod. Hist. 

 Nat. Dept. Var, i, p. 125. 



Sub-gen. : Arion, s.s. 



1855. Luchea, sec. I of Arion : Moquin-Tandon, Hist. 



Moll. France, ii, p. 10. 

 1868. Lochea, Moq.-Tand. [as a genus] : Malm, Zool. 



Ohserv., v {Goleborgs K. Vet. & Vitt. Samhdll. 



Handl., N. Tidsf., x, 1870), p. 30. 

 1868. Baudonia : Mabille, Rev. cfc May. Zool., Ser. II, 



torn. XX, p. 131. 



Sub-gen. : Prolepis, Moquin-Tandon. 



Etym. : — Gr. irpo, in front + AeTrt's, a scale or shell. 

 Type : — A. suhfuscus (Draparuaud). 



1855. Prolepis, sect. II of Arion : Moquin-Tandon, Hist. 



Moll. France, ii, p. 14. 

 1868. Prolepis, Moq.-Tand. [as a genus] : Malm, Zool. 



Ohserv., v. {Goteborgs K. Vet. & Vitt. 



Samhall. Handl, N. Tidsf., x, 1870), p. 43. 

 1870. Prolepsis [sic] : Mabille, Ann. Malac, i, p. 117. 

 1873. Koheltia [n. gen.] : Seibert, Nachrbl. Deutsch. 



Malak. Gesell., v, ji. 81. 



Sub-gen. : Carinella, Mabille. 

 Etym. : — Diniin. of Lat. carina, a keel. 

 Type : — A. circumscriptus, Johnston. 



1870. Carinella: Mabille, Ann. Malac, i, p. 114. 



Sub-gen. : Ariunculus, Lessona. 

 Etym. : — Diniin. of Arion. 

 Type : — A. inlermedius, Normand. 



1870. Eugeomalacus [pars] : Mabille, Ann. Malac., i, 

 p. 121. [Under this name Mabille included 

 not only Geomalucus vera, but a number of 

 " s})ecies " usually referred to Arion inter- 

 medius and its varieties; while (p. 123) he 

 further created a section Lmvigali, for certain 

 smooth forms citing two species generally 

 considered to be varieties of Arion inter- 

 medins. 



1881. Ariuncidus, n. gen. : Lessona, Atti R. Accad. Sci. 

 Torino, xvi, p. 193. 



British Distribution in Time : The shell granules of 

 species of this genus are not specifically deter- 

 minable; they are met with in beds from the 

 Cromeriau upwards. 



