COLLINGE : ON THE VALIDITY OF ARION OCCIDENTALS. 5 



Draparnaud's work, but if the present variety was named ruber, 

 of course lamarckii must fall." 1885 is of course an error for 

 1855. On referring to Gray's work I find that he refers to 

 Draparnaud's Tab. Moll, de France, p. 102, and also to Lamarck's 

 Ency. Method, pi. 463, f. 2; but on turning to these I find no refer- 

 ence to any ruber at all. How Gray made the error I know not, 

 unless he carelessly copied without verification from Ferussac et 

 Deshayes {Hist. Nat. Moll., ii., p. 60, pi. 1, f. 1), where these 

 references appear, as also does a reference to Draparnaud (Hist. 

 Moll. France). This part of the text was written by Ferussac 

 himself and published between 18 19-1832, the remainder of the 

 volume taking twenty years more for its completion. 



There is then no variety ruber of Draparnaud and there is no 

 variety ruber of Ferussac, as he only named it "var. //." and charac- 

 terised it as " totus ruber.' 1 '' Draparnaud referred to a reddish form, 

 but to which I cannot determine. Thus lamarckii, Kaleniczenko, 

 can stand. It was described by him in 185 1 in a paper called 

 " Description des limaces qui se trouvent dans PUkraine," which 

 appeared in the Bull. Soc. Imp. Nat. Moscou, xxiv., No. iii., and 

 was characterised as " totus ruber." 



ON THE 



VALIDITY OF ARION OCCIDENTALS, Ckll., 



A SUPPOSED NEW SPECIES. 



By WALTER E. COLLINGE, 



Mason College, Birmingham. 



Mr. T. D. A. Cockerell has recently described 1 from a single 

 example what he supposes to be " an apparently new species " of 

 Arion. The specimen, which is now in the British Museum, is 

 from Jurancon, near Pau, Basses Pyrenees. Its state of preservation 

 is such as not to favour a minute examination, but Mr. Cockerell 

 has described it in some detail and figured the more important 

 points. After having made a careful examination of the same 

 I am of opinion that it is nothing more than an example of the 

 well-known A. hortensis, Fer. 



1 fourn. Conch., t8 



