254 THE SCOTTISH NATURALIST 



worked out, should furnish a goodly list of land and freshwater 

 mollusca. 



The material upon which the following list has been 

 based is the result of the labours of about nine observers. 

 Taken chronologically, the earliest in point of date are a few 

 anonymous examples from Lochnaw and Larbrax in the 

 Royal Scottish Museum at Edinburgh; and Port Logan 

 examples, collected by Dr David Robertson, preserved in 

 the Kelvingrove Museum at Glasgow. Specimens collected 

 in 1890, about Portpatrick, by Mr Richard Rimmer, are in 

 the Royal Scottish Museum ; and my very good friend 

 Mr William Evans, F.R.S.E., collected during the same year 

 about Stranraer, and also at Ardwell, Knockglass, and Port 

 Logan. Before or about this date Mr P. Adair collected 

 one species at Chippermore, near Port William. 



In the year 1909 collecting was systematically carried on 

 by three observers. My friend and ever-faithful companion, 

 Mr John F. Musham, F.E.S., of Selby, who is always ready 

 to undertake special investigation in neglected areas, went 

 at my special request and collected in the neighbourhoods 

 of Portpatrick and Stranraer. During the same month 

 (August) another friend. Miss Marie V. Lebour, M.Sc, of 

 the Zoological Department of the University of Leeds, was 

 working the vicinity of the Isle of Whithorn ; and, unknown 

 to us until very lately, the district of Corsemalzie, its burn 

 and its local lochs, was being diligently investigated about 

 the same time by the very able resident naturalist, Mr Jack 

 G. Gordon of Corsemalzie, whose researches also took him 

 to the adjacent shores of Luce Bay. His work has been 

 continued down to the present year, and to him I am 

 indebted for the information embodied in the opening 

 paragraph of this paper. In 191 2, my friend Mr Edward 

 Collier, of Manchester, collected mollusca at Garlieston and 

 the Isle of Whithorn. Finally, during the months of July 

 and August of the present year (19 16), Mr Alexander Ross, 

 of Glasgow, collected a considerable amount of material 

 about the Isle of Whithorn. 



The literature of the subject is but scanty. In the 

 Proceedings of the Natural History Society of Glasgow^ 1 869, 



