THE ENTOMOLOGIST. 211 



observed in America ; and in Africa the alpine insects when 

 discovered may indicate what the arctic species of that region 

 would have been if their abode had been called into 

 existence. 



The advance of the race from Amurland to West Europe 

 is across a space of several thousand miles, and must have 

 occupied a long time, lliough attended with less difficulties 

 than the spreading from south to north, and favoured by 

 increasing mildness of climate. 



The following notes mention some of the Amurland insects 

 that are the same or not the same as those of England, This 

 region, as before mentioned, is intersected by the great river 

 Amur and by its tributaries, and is bounded to the north by 

 the Stenovoy mountains. The source of this river is near 

 that of the Tula ; the latter, joining some others which 

 proceed from the Altai mountains, feeds the lake Baikal, 

 near which is Irkoutsk : this lake occupies a large part 

 of the space between the Stanovoy mountains and the Altai 

 mountains, the latter being connected with the Oural 

 mountains. 



Francis Walker. 



April, 1872. 



Entomological Notes, Captures, 8fc. 



CoUccthig in Sherwood Forest : abundance of Euperia 

 fulvago. — Sugaring for moths seems to have been so unpro- 

 ductive in nearly every district this year, that an account of a 

 bit of good work at this kind of collecting will, 1 think, be in- 

 teresting to the readers of the ' Entomologist.' August 20th to 

 24th 1 spent in company with the Rev. G. C. B. Madden and 

 Mr. S. L. Mosley, at Sherwood Forest, our object being to 

 collect several of the local Lepidopterous insects which occur 

 there. Next to Am])liipyra pyramidea, Cosmia trapezina, and 

 Noclua xanthographa, by far the most abundant Noctua 

 was Euperia fulvago, and in the four nights we captured six 

 hundred specimens of this species; and, at the same time, a 

 lepidopterist from a neighbouring town took four hundred : 

 a thousand specimens lor the four of us ! This looks like 

 slaughter, and I know we shall be charged as " exterminators," 

 but our raid upon them seemed scarcely to affect their 



