THE ENTOMOLOGIST. 181 



rounded hole, which you will notice. The gall-midge escapes 

 from the fallen tube within a few weeks, according to the 

 weather, and the female soon afterwards deposits her eggs in 

 the leaf. There are several generations each summer; the 

 last autumnal brood winters as larva in the fallen tube, the fly 

 appearing in April. — Albert Midler; Eaton Cottage, South 

 Norwood, S.E., July 27, J 872."] 



Slug Larva of the Cherry. — Can you give me any informa- 

 tion as to the species and habits of the enclosed larvae ? 

 They literally occur by millions on all the cherry and plum 

 trees in a garden belonging to a friend of mine, and are fast 

 reducing them to a state of nudity. I shall be very much 

 obliged to you if you can suggest any method of getting rid 

 of them. — R. E. Brameld; Nottingham and Notts Bank, 

 Retford, August 8, 1872. 



[It is the larva of Blennocampa Cerasi, a small sawfly. 

 During last summer, as well as the present, this pest has 

 been almost universal ; and in answer to many inquiries and 

 complaints that have appeared in the 'Field' newspaper, 

 "powdered hellebore" has been recommended as a cure ; but 

 I am not quite certain what is meant by this term ; and 

 although chemists generally are willing to supply something 

 under the name, I think it is not always the same article. 

 Further, I would observe that the mode of application of this 

 or any other powder to a cherry-tree or a pear-tree (pears 

 are equally infested with these little slugs), requires practical 

 instructions, which have not hitherto been published, and I 

 confess I should not know how to commence operations.] 



Gooseberry Grubs. — The Rev. H. A. is referred to the 

 preceding paragraph ; and also to my paper on this insect 

 in the first volume of the 'Entomologist.' — Edward Newman. 



Larvod of Acronycta Aceris, dc. — The hairy larvae, from 

 Christchurch, are those of Acronycta Aceris, described at 

 p. 251 of 'British Moths:' the difference in colour is very 

 common ; the variety with reddish fascicles is the usual 

 form. The green larva with yellow warts is that of the 

 emperor moth, Saturnia Carpini. — Id. 



Preservation of Colour in Dragon-flies (Entom. vi. p. 46). 

 — Many years ago I preserved the colour very fairly in such 

 dragon-flies as Libellula Virgo, as well as in grasshoppers, by 

 placing them in a tolerably hot oven immediately after they 



