318 THE ENTOMOLOGIST. 



These zinc covers I make myself, turning down three or four 

 projecting pieces over the rim of the pot, so as to prevent 

 their getting moved by accident, and the imago escaping on 

 transformation. At present I keep all my pupae in an airy 

 potting-shed vrith a north aspect, but in the depth of winter 

 1 think of transferring thetii to my greenhouse. — [Rev.l W. 

 Nickisson ; Church Aston, near Newport, Shropshire, Sep- 

 tember 19, 1865. 



255. The Celery-Jly at Manchester. — An insect is doing a 

 serious injury to my celery, and, 1 find, is equally destructive 

 all round within five miles of my residence : it is a pale 

 greenish maggot, and feeds between the two cuticles of the 

 leaf, making large blotches. The sparrows are doing their 

 best to rid us of this plague, and if any member of a sparrow- 

 club were to see them at work I think he would spend the 

 remainder of his natural life in sackcloth and ashes. — A. G. 

 Latham ; JVeaste Hall, Pendleton, Manchester, September 

 18, 1865. 



256. The Celery-fly. — I believe that the celery-fly is Try- 

 peta Heraclei of Linnaeus, which is now named Acinia He- 

 raclei. — Francis Walker; The Avenue, Church End, Finch- 

 ley, September 25, 1865. 



257. The Celery-fly. — After having made the inquiry of 

 Mr. Walker, and pending his reply, 1 had the good fortune 

 to procure a perfect insect, and it proved to be the species 

 named Euleia Onopordinis of Mr. Walker's invaluable Mo- 

 nograph of the family, published in the ' Entomological 

 Magazine ' (vol. iii. p. 57, fig. 30) : the description and figure 

 leave nothing to be desired ; so that I am induced to believe 

 that at least two species are destructive to the celery. Mr. 

 Walker having, with his unvarying kindness, given me the 

 preceding information, I am bound in courtesy to publish it, 

 although differing from my own experience. I have now 

 before me the larva, pupa and imago, and find, by a reference 

 to Curtis (' Farm Insects,' p. 419), that he has given the insect 

 the name of Onopordinis. Mr. Curtis adds that the larva is 

 attacked by two parasites, Alysia Apii and Pachylarthrus sma- 

 ragdinus, which no doubt combine with the sparrows in 

 keeping this destructive insect in check. — Edward Newman. 



258. Scarcity of Wasps. — The immense falling off in the 

 number of anticipated wasps' nests which has taken place, 



