248 THE ENTOMOLOGIST. 



marginal area ; a few scattered black scales on the disc. Hind wings 

 russet tinged, as also is the under side of all wings ; fringes paler. 

 Expanse, 21 millim. 



Collection number, 35 rt. 



A male specimen from Garambi, October 23rd, 1904. 



(To be continued.) 



NOTES AND OBSERVATIONS. 



Hornets as Enemies of Arboriculture. — One of my neigh- 

 bours, a Suffolk landed proprietor, is much interested in afforestation, 

 and has planted several hundred acres with trees of various kinds. 

 The other day, in the course of conversation regarding injurious 

 insects, he informed me, much to my surprise, that the insects that 

 did his trees the most harm were hornets, and that his men had been 

 obliged to seek out and destroy all the nests of this species that they 

 could find. The trees specially attacked are young ashes, when they 

 attain the height of ten or fifteen feet, and that the same trouble had 

 been experienced on the Duke of Grafton's estate at Euston. I 

 visited the plantation indicated, and found several individuals of 

 Ve&im crabro at work, and evident signs of their depredations on the 

 young trees. They remove the bark, at the height of ten or twelve 

 feet from the ground, using it, no doubt, in the construction of their 

 nests. Many of tlie young trees had three or four feet at the top 

 entirely killed by the bark l)eing gnawed off all round, and others 

 had branches withered away from the same cause. The amount of 

 damage was considerable, and there is no possible doubt as to the 

 cause, as I saw the insects at their work, several of them removing 

 and flying away with pieces of the bark while I watched them. I do 

 not think it is generally known that hornets in this country do an 

 appreciable amount of damage, and I think the matter is worthy of 

 record. — (Lt. -Colonel) C. G. Nurse ; Timworth Hall, Bury St. 

 Edmunds, August 11th, 1910. 



On the "Assembling" of tEgeria (Sesia) tipuliformis. — In 

 the report of the Meeting of the South London Entomological 

 Society on June 23rd (antea, p. 230), Mr. Noad Clark notes the 

 "assembling" of ^geria tiimliformis as taking place between one 

 and two o'clock in the afternoon. I had an opportunity of observing 

 the same interesting fact this year, though previously unaware that 

 ^. tipuliformis was an "assembling" species. 



On Sunday, June 26th, the morning was hot and sunny, and 

 about 9 a.m. I found a fine female ^. tvpuliformis, newly-emerged, 

 on a currant-leaf in the garden. I boxed her for observation pur- 

 poses, meaning to liberate her later in the day. About 2.30 p.m. I 

 carried her down to the same currant fence from which I had taken 

 her, and was immediately aware on opening the box of some insects, 

 which at first I took to be Diptera, flying around me, and backwards 

 and forwards in a very excited state. I soon saw they were ^. tipu- 

 liformis males, and almost immediately my female was seized upon 



