25 



Zenzcra pyrina, a species at the present time causing an 

 immense amount of damage to the trees and shrubs in the 

 London parks and squares. 



Mr. Montgomery, to illustrate his paper on " Rearing 

 Lepidoptera," exhibited a number of cages for rearing Lepi- 

 doptera. Some were for rearing larvae from ova, others were 

 for hybernating larvae, and one was a cage specially made for 

 the treatment of pupa^. He also showed a travelling box 

 for conveying the cages of young larva; and a photograph 

 of the penthouse he had had built to contain all his cages 

 and other material (page 5). 



Mr. Adkin considered the paper most useful and practical, 

 and he referred to the Tugwell method (see " Abs. Proc. S. 

 Lond. Ent.," i88g), which he had found very successful, but 

 with this method care must be taken not to moisten the soil 

 too freely, or mould would result. 



Mr. Sich wished that some member could give practical 

 hints as to dealing with the larvae of micro-Lepidoptera, which 

 he had found so very difficult to rear successfully. 



The President considered that, where it could be done, 

 " sleeving " was one of the best methods of rearing micro- 

 larvae. 



Mr. Montgomery, in replying, mentioned that he always 

 removed mould with a brush and carbolic acid. 



MARCH 14th, 1901. 



Mr. H. S. Fremlin, F.E.S., President, in the Chair. 



Mr. Colthrup exhibited a long series of females of Poly- 

 oiiiiiiatus icariis and P. hcllargns, most of which partook in a 

 greater or lesser degree of the male coloration. Some of 

 the former species were prettily splashed with a considerable 

 amount of whitish colour. They were all from Eastbourne. 

 Mr. Adkin said that the splashed forms were all of the type 

 usually obtained from the chalk downs of Sussex. 



Mr. Routledge exhibited a specimen of what he supposed 

 to be a male of Hydrilla palustris, taken on the wing June 

 loth, 1899, by Mr. Thwaites, near Carlisle, He called 

 attention to the fact that the female of that species had on 

 two previous occasions been taken in that neighbourhood. 

 Several members were doubtful whether the specimen was 

 H. palustris or an example of a species new to Britain. Mr. 

 McArthur said that the males of H. palustris that he had 

 seen were not so large as the insect exhibited, and the fore- 



