LEPIDOPTERA, ETC., AT SCOTTISH LIGHTHOUSES 225 



The preponderance of the Blue Fulmar in the far north, 

 and its equal abundance with the pale form in the sub- 

 arctic regions, all militate against the probability of those 

 boreal areas having furnished the emigrants which have in 

 recent years so rapidly established themselves in British 

 haunts where they were previously unknown. Had these 

 colonists been of high northern origin there would surely 

 have been among them a fair proportion of dark birds : so 

 far as we know such is not the case, for the ancient southern 

 home of the species, St Kilda, is the only haunt that knows 

 the " Blue Fulmar " as a native of our islands. 



LEPIDOPTERA (MOTHS) AND OTHER INSECTS 

 AT SCOTTISH LIGHTHOUSES, CHIEFLY IN 

 THE FORTH AREA. 



By William Evans, F.R.S.E. 



( Continued fro?n page 135.) 



We now come to the lists of species obtained in the 

 course of the present inquiry. 



Until quite recently it was not intended that the scope 

 of the inquiry should extend beyond the limits of the 

 Forth area ; but seeing that several lighthouse-keepers in the 

 west and north of Scotland have, during the past twelve 

 months, been kind enough to send me interesting collections, 

 a wider field has come into view. The records from the 

 Forth stations are, however, still kept by themselves and 

 form the main list. Records from Killantringan light- 

 house, on the coast of Wigtownshire, are given in a second 

 list ; those from Butt of Lewis lighthouse, Outer Hebrides, 

 in a third; and those from Orkney and Shetland light- 

 houses in a fourth. Supplementary notes concerning some 

 of the species are given at the end. As in my previous 

 34 2 F 



