( Hii ) 



Hall stated that tlicy were bred I'toin isallow catkins collected in 

 Derbyshire. As regarded the darker forms the question of 

 hybridism between X. fidvcujo {cerctijo) and the next species, A'. 

 flavatjo (silafjo) had been suggested ; but this theory did not seem 

 plausible, because the two species were easily distinguishable in 

 the larval stage. If a batch of larvae of the two species were 

 turned out on to an open newspaper. A', fulvago would be found 

 to be of a darker and more variegated colour than flavago ; and 

 besides its distinctive colouration, X. fulvago was a more active 

 larva than its congener. 



Mr. W. C. Boyd e.Khibited, and made remarks on, the larva of a 

 species of Ornithoptera from New Guinea. 



Mr. H. Goss exhibited a series of Bankia argentula collected 

 by him in Cambridgeshire in June last, and also, for comparison, 

 a series of specimens of the same species taken at Killarney in 

 June, 1877. It appeared that the Irish form of the species was 

 larger and more brightly coloured than the English form. 



Mr. Eland Shaw exhibited a female specimen of Dccticus 

 vevrucivorus (Linn.), taken in July last, at St. Margaret's Bay, 

 Kent. 



Mr. Waterhouse recorded the recent capture of Deio2)eia 

 pulchellasit Ramsgate, by Mr. Buckmaster; and the capture of 

 Anosia j)lexippus at Gibraltar was also announced. 



Jonkeer May, the Dutch Consul-General, asked whether the 

 reported occurrence of the Hessian Fly [Cecidomijia destructor) in 

 England had been confirmed. In reply Mr. McLachlan said 

 he believed that several examples of an insect thought to be the 

 Hessian Fly had been bred in this Country ; but that everything 

 depended upon correct specific determination in such an obscure 

 and difficult genus as Cecidomyia. 



Paper read. 



Mr. J. W. Slater read the following paper : "A (|ucstion on 

 the relation between Insects and Flowers." : — 



"Although the action of insects in the development of ento- 

 mophilous plants is generally admitted, some points of this 

 subject seem to need further enquiry. We find among plants 

 some which give off odours very attractive to insects, and others 

 whose perfumes, though pleasant to us, seem unattractive to bees. 



