EASTERNESS AND ITS MOLLUSCAN FAUNA 109 



J. E. Black in 191 3 — all of them visitors, and none resident 

 observers. 



The authenticated list is as follows : — 



Li?nax cinereo-niger (^Volf). 



Loch-an-Eilean near Aviemore, one, May 1893 (W. Evans); 

 the Doune, Rothiemurchus, one, 12th June 1S93 (/c/.); var. 

 maura in Rothiemurchus pine forest, one nearly adult and 

 one small, with next species, 29th August 1904 (Rev. R. 

 Godfrey). 



Limax tenelbis (Miill.). 



Abundant in the pine forest of Rothiemurchus, where it was 

 discovered by Rev. R. Godfrey on 29th August 1904. This 

 is the original locality in which the species was rediscovered 

 as British, after having been lost sight of for no less than fifty- 

 six years, and the history of its rediscovery may be considered 

 one of the few romances of modern natural history. Mr 

 Godfrey had previously collected the species in Switzerland, 

 and on working the Rothiemurchus forest was struck by the 

 similarity of the slugs which he found so abundant among 

 the pine needles to the Swiss specimens. He described it 

 as being emphatically the common slug of the habitat, where 

 its chief haunts were on old pine branches lying half-smothered 

 in the masses of blaeberries, whortle-berries, and heather — the 

 branches being covered with decayed pine needles and other 

 rotten vegetation, amongst which these slugs concealed them- 

 selves, although several were found under stones. Its ordinary 

 companion was L. arboruni. This discovery of the nature 

 of the habitat at once threw a flood of light upon the occur- 

 rence of the species, and showed that the reason of its having 

 so long escaped notice was the fact that, its habitat being 

 aboriginal pine forests, conchologists had never thought of 

 searching, from a belief that pine was inimical to molluscan 

 life. The hint was at once taken, and it fell to my lot to 

 organise immediate search in similar localities elsewhere. This 

 was the end of August, and on the 15th of October I left 

 England for a long tour at the Antipodes. During these six 

 weeks it was found in three more Scottish and two English 

 counties, making six in all, viz. : — ^Easterness, Kincardine, 

 Perth Mid, Perth South with Clackmannan, York North-west, 

 and Essex South. On my return in 1906 from my Antipodean 

 travel, I organised fresh work, and the species turned up in ^. 

 1907 in Northumberland South; in 1908 in Worcestershire, 





