38 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 12.) 



DiPTERA (Two-winged Flies). 



Chh'onovius plumosus, L. 



Isle of May: three ( $ ) taken at lantern on night of ist June, 

 one (?) on 28th July, two between 9 and 11 p.m. on 17th August, 

 and one on 24th August, all in 1911 ; one (?) in third week of 

 July 1914. 



FiDRA : two in August 19 10. 



Inchkeith : one in summer of 19 10. 



Cliironomus prasiuus, Mg. 



Isle of May: two <y$ ?) in early morning of 13th September 

 1910; two ((?) in beginning of June 1913; etc. 



CJiirononms annularis, Deg. 



Isle of May: three ( ? ), night of 7th June 1911; two ( $ ), 

 22nd June 1912. 



Chironomus viridis, Mcq. 



Isle of May : five ( $ ), nights of 7th June and 17th August 191 1. 

 St Abb's Head : one ( ? ), night of 9th September 19 13. 



Orthocladius sordidellus, Zett. 



Isle of May: on the night of 17th August 191 1 this small 

 midge came in great numbers to the lantern ; from personal observa- 

 tion I can state that between 9 and 1 1 p.m. they were literally in 

 thousands on the outside of the glass. The specimens preserved 

 are all females. 



Barnsness : great numbers also appeared at this lantern on 

 and about 17th August 191 1 ; on the 20th the light-keeper sent me 

 a matchbox containing 2470, all females. Some are decidedly 

 paler than others, but Mr Grimshaw considers that they all belong 

 to this species. 



