84 THE SCOTTISH NATURALIST 



LEPIDOPTERA (MOTHS) AND OTHER INSECTS 

 AT SCOTTISH LIGHTHOUSES, CHIEFLY IN 

 THE FORTH AREA. 



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



{Continued from page 43.) 



The finding of a mislaid box since the publication of the 

 previous instalment enables me to add the following species 

 to the lists of Diptera and Hymenoptera taken at the ISLE 

 OF May lantern, namely : — 



Diptera. — Rhamphomyia erythrophthalma, Mg., one $ 

 (identified for me by ]\Ir J. E. Collin) ; Eiiphoria cornicina, 

 Fab., one ? ; Hydrophoria brunneifrons, Ztt., one $ — all on 

 night of 17th August 191 1; and Ochthiphila polystigma, Mg., 

 one ((J) on night of 22nd June 191 2. 



Hymenoptera. — Lasius flavus, De G., one $ ; Ifomocidus 

 ekgans, Grav. ? dark var., one 9 ; Promethus sidcator, Grav., one ? 

 (these are the two ? Bassides mentioned on page 42) — all on 

 night of 17th August 191 1; Hemiteles tristator, Grav., one (c^) 

 on night of 22nd June 1912; and Ophion distans, Thorns., one 

 {$) in beginning of September 191 2 (recorded as a cj of 

 O. luteiis on page 42). For the identification of the Ichneumon- 

 flies I am indebted to Mr Claude Morley. 



II. Records from Killantringan Lighthouse on the Coast 



OF Wigtownshire. 



This lantern is, it appears, visited by large numbers of moths 

 and other insects. In 19 13 and 19 14 I received from Mr D. A. 

 Mowat, lightkeeper, 13 separate lots, the dates of capture 

 ranging from April to October. The total number of specimens 

 sent was 1068, of which 966 were moths. A notable "rush" 

 occurred on the night of 19th September 1913, when no less 

 than 356 moths and a caddis-fly were secured between 10 and 

 II p.m. By far the most abundant species was the Silver Y or 

 Gamma Moth, of which 293 were taken, the next in point of 

 numbers being the Dark Sword-grass {Agrotis siiffusa), of which 

 there were forty-two examples. Plusia ga?nma was also largely 

 represented in two other lots sent during the same month. The 



