1889.] 



THE YOUNG NATURALIST. 



73 



Armiture in the European Rhopalocera." This excellent paper is 

 accompanied by three plates, on which nearly the whole of the Euro- 

 pean Rhopalocera are dealt with, and the anal appendages of each 

 figured in different aspects. 



In Mr. Scudders' "Butterflies of the Eastern United States," now 

 being published, already, in Plate 33, about 40 figures of these parts 

 are given ; and in Messrs. Godman and Salvin's " Biologia Cartrali- 

 Americana Lepidoptera Rhopalocera," great use is made of the dif- 

 ferences in the anal appendages of the male insects. 



The late Mr. P. H. Gosse also wrote on the subject. The fact 

 really is that more and more attention is constantly being given to 

 the structure of these parts. 

 Chirhiry, Beckenham, Kent. 



Reports of Societies. 



ENTOMOLOGICAL SOCIETY OF LONDON. 



March 6th, 1889.— The Rt. Hon. Lord Walsingham, M.A., F.R.S., President, 

 in the chair. 



The Rev. W. F. Johnson, M.A., of Armagh; the Rev. C. F. Thornewill, M.A., 

 of Burton-on-Trent ; and Mr. C. R. Straton, F.R.C.S., of Wilton, were elected 

 Fellows. 



Mr. F. P. Pascoe exhibited several specimens of the Saiiba Ant (CEcodoma cepha- 

 lotes), from Para, carrying portions of dried leaves. It seemed questionable whether 

 the leaves were collected by the Ants for the purpose of making their nests or for 

 the sake of some fungus which might be growing on them. 



Mr. Jenner Weir exhibited, and read notes on, specimens of a Butterfly (Timmala 

 petiverana), from Mombaza, Eastern Africa. 



Mr. J. H. Durrant exhibited a living larva Cossus lignipevda, which had entirely 

 lost its ordinary colour and had become first pink and then white. He attributed 

 the change and subsequent loss of colour to the fact that it had been deprived of its 

 natural food and fed for eighteen months on pink paper, with which the box in 

 which it was kept was lined, and subsequently on white cardboard. Mr. M'Lachlan 

 remarked that the most extraordinary peculiarity about this larvae, in addition to 

 the colour, was the absence of the usual odour of Cossus. Lord Walsingham 

 observed that it was questionable whether the colours of the larvae were dependent 

 on the colours of their surroundings, or whether they were affected by the contents 

 of the intestinal canal. Prof. Meldola said that the caterpillar exhibited having 

 eaten the pink paper had most probably become dyed by the colouring matter, and 

 he did not think the observation had much bearing on the question of the protective 

 colouring of caterpillars. It was well known to physiologists that certain dye-stuffs 



