64 THE ENTOMOLOGIST. 



taken by myself at Grange in August, 1900, but during the past two 

 years of hard collecting has not been seen. A. unitaria apparently 

 is scarce here. My only record is July 27th, 1920, Grange. Also 

 A. luteata June 17th, 1921, Holker. It is frequently necessary to get 

 a car into apparently impossible places or to back a mile, but a 

 doctor's car in the Lake District has to go almost anywhere, some- 

 times even through flowing tidal waters, or through timber-felling 

 tracks, and I can strongly suggest that others should - follow our 

 example and try " mothing by motor." (N.B. — Witherslack is in 

 Westmorland. Other localities all North Lanes.). — {Dr.) Eichaed C. 

 Lowtheb ; Fernleigh, Grange-over- Sands. 



Emmelesia minobata, etc., at Grassington. — I paid a short visit 

 to Grassington on July 27th last. The day was fine but overcast ; in 

 consequence Erebia cethiops, though fully out, was not flying freely, 

 but several nice specimens were taken. My chief object was to 

 discover if Larentia flavicinctata still occurred in its old^haunts, as it 

 had not been seen for some time ; however, it was. still found on the 

 limestone rocks, but was not numerous, about a dozen being taken. 

 Eeturning over the. high ground above the woods, Aphelia osseana 

 was flying freely, but the best thing taken was Emmelesia minorata. 

 The first specimens taken were sitting on the walls ; they flew off 

 quickly as one approached and were bad to secure, but a week later, 

 August 3rd, they were flying over the short grass, settling on the 

 stems or sometimes on the bare ground ; this was about 5 o'clock in 

 the afternoon — probably this is the time of their natural flight, which 

 is very much like that of E. albulata. I believe this is the only 

 recorded Yorkshire locality. Larentia olivata was common in the 

 same locality, but the only other interesting insect caught was a fine 

 Cerostoma sequella taken from a tree-trunk. — W. G. Clutten ; 132, 

 Coal Clough Lane, Burnley. 



Non-Attractiveness of Electric Light : A Query. — Can 

 anyone offer an explanation of a curious phenomenon which has 

 very much puzzled me ? In pre-war days the stout electric lamps 

 here attracted a large number of moths. There was one arc lamp 

 in particular, near by, which shed its light upon a house with a 

 cemented front, which always produced an abundance of visitors. On 

 the house front I would often find as many as a dozen moths late in 

 the evening, including such species as E. autumnaria, S. fagi, X. 

 •aurago and C. xerampelina. During the war the lighting was reduced 

 to a minimum, in consequence of which no more moths were seen at 

 the lamps. Since the war, however, the old lighting has been restored, 

 though with different lamps. These seem to possess absolutely no 

 power of attraction. Not a single moth is ever found now at any of 

 .our lamps. During 1921 1 only saw one moth resting on the wall of 

 the house mentioned, and that was a <$ H. brumata at the beginning 

 of December. What is the cause of this? I have asked the 

 -electrical engineer if he can explain, but he cannot. I find the old 

 lamps were called " Flame Arcs " ; the present ones, which give a 

 rather whiter light than the old ones, are known as " gas filled " 

 or " half Watt " lamps. It seems to me that there must be some 

 particular ray which was present in the old lamps that is absent in 



