66 JOURNAL OF CONCHOLOGV. 



genital organs, wliich is so useful a guide to the specific 

 distinction of slugs, it does not materially differ from 

 that form. Its external characters are, however, so 

 distinct and unmistakable that it is at least entitled to 

 subspecific rank. It is, therefore, included in this list as 

 distinct from its very close ally. I may mention here that 

 nearly all the British examples on record have passed 

 througli my hands, so that I have had ample grounds 

 upon ^Yhich to base an opinion. — W.D.R. 



A REVISED LIST OF THE SPECIES OF 

 BRITISH SLUGS. 



By T. D. a. COCKERELL. 



Mv recent researches among the slugs have led me to some 

 opinions about the British species, different from those usually 

 lield in this country, and which, if correct, will necessitate a 

 considerable revision of the nomenclature hitherto in use. 



I hope in due course to set forth all these points in full, 

 but I have thought it might be of interest to the members of 

 the Conchological Society to have a list of the British slugs, as 

 proposed to be revised. 



TESTACELLID.E. 

 Testacella Cuv. iSoo. 



T. lialiotidea Drap. 1801 



T. scntuluin Sby. 1823. 



T. f /t a ugt'i {Few) Desh. 1830. 



LIMACID.E. 

 Limax Linn., 1758. 



Note. — The Linnean genus Liniax included Ario/i, 

 and the first two species mentioned belong to the latter 

 genus. It is certain, however, that the first mentioned 

 species of the Linnean genera were not specially intended 



J.C., vii., July, 1S92. 



