14 



THE YOUNG NATURALIST. 



on Impatiens noli-me-tangere. Mr. Adkin said that as the food-plant was so 

 extremely local, and consquently difficult for Mr. Murray to obtain, he had 

 endeavoured to get the larvae to feed on some other species of balsam, includ- 

 ing the large garden species, usually known as Canadian balsam, but that he 

 had not succeeded in doing so. Mr. E. B. Poulton observed that this state- 

 ment tended to confirm the remarks he made at a recent meeting of the 

 Society on the subject of the habits of lepidopterous larvae with reference to 

 their food-plants. 



Mr. Billups exhibited a number of living specimens of Aleurodes vaporari- 

 orum (Westw.), obtained from a greenhouse at Snaresbrook, where they had 

 caused great havoc amongst tomato plants ( Lycopenicum esculentum.J He 

 remarked that the species had been first figured and described by Prof. West- 

 wood in the " Gardener's Chronicle" 1856, and that attention had been 

 recently called to it by Mr. Douglas (Ent. Mo. Mag. for December.) Mr. 

 J. Jenner Weir stated that plants in his greenhouse had been attacked by the 

 same species. 



Mr. Poulton exhibited the blood of a pupa of Smerinthus Mice, and demon- 

 strated, by means of a micro-spectroscope, the existence of chlorophyll therein. 



Mr. G. T. Porritt exhibited forms of Cidaria suffumata from Huddersfield, 

 including one very similar to that taken at Dover by Mr. Sydney Webb (Proc. 

 Ent. Soc. 1886, p. xxv.) ; and one still more extreme, having only the basal 

 mark and the central stripe, with a slight streak at the tip, brown, the re- 

 mainder of the wings being perfectly white. He also exhibited a series of 

 small bilberry-fed Ypsipetes elulata from Huddersfield, showing green, red- 

 brown, and black forms. 



Mr. S. Stevens exhibited forms of Camptogramma bilineata and Emmelesia 

 albulata from the Shetland Isles, and a curious variety of Chelonia caja from 

 Norwich. 



Mr. H. Goss read a letter from the Administrator-General of British 

 Guiana, on the subject of the urticating properties possessed by the larvae and 

 pupae of certain species of Lepidoptera collected in Demerara. 



Mr. M'Lachlan read "A Note concerning certain Nemopterida." 



Miss E. A. Ormerod communicated a paper " On the occurrence of the 

 Hessian Fly {Cecidomyia destructor) in Great Britain." It appeared from 

 this paper that there could be no longer any doubt as to the occurrence of the 

 insect in this country, specimens obtained in Hertfordshire having been sub- 

 mitted to, and identified by Prof. Westwood, and by Mr, W. Saunders, of 

 London, Ontario. Prof. Westwood said the specimens agreed exactly with 

 Austrian specimens in his possession, sent to him some years ago by Mons. 

 Lefebre, who had received them from the late Dr. Hammerschmidt, of Vienna. 



