20 THE ENTOMOLOGIST. 



other tree or shrub except birch, and, if so, what other food 

 would be suitable ? Would either apple or hawthorn do ? 

 — H. McDouall ; Ketierijuj, NoriJtlauds. 



Fluid ejected hy Lepidoptera on assuming the Imago 

 slate. — [The Rev. H.J. While inquires whether fluid ejected 

 by Lepidoptera, on assuming the perfect state, is injurious to 

 the pupae of other insects on which they may happen to fall : 

 he particularly desires Mr. Greene's opinion, and that gentle- 

 man has kindly replied as under. — E. N.'\ — I am sorry that 

 I could not answer your letter sooner, but I have been much 

 occupied. I do not think I can give any satisfactory answer 

 to Mr. White's question. I fancy that the fluid, if it fall 

 on a small pupa, has an injurious effect, as it probably 

 " smothers" it. As far as my experience goes, it does not 

 injure the larger ones. At the same time it may be better to 

 avoid the risk as far as possible. 1 always remove the fluid, 

 if I see it in time. I am glad to hear that the 'Entomologist' 

 progresses favourably, and I hope it may continue to do so. 

 {Rev.) J. Greene ; 49, Stephen's Green, Dublin^ December 9. 

 aO/i ^^^' Mould on Pupce. — Can you tell me the reason of mould 

 f / appearing on the pupfB of Lepidoptera ? I have now some 

 pupae of S. Ocellatus, Ligustri, &c., and on the pupae I find a 

 lot of whitish mould (1 have them on some soil covered with 

 about five inches of moss). If you could tell me the reason 

 and the remedy, in the next number of the ' Entomologist,' I 

 should feel extremely obliged. — S.J. Barnes; Trafalgar 

 Bead, Moseley, December 14, 1867. 



Keeping LarvcB through the Winter. — I have some larvae 

 5» of Orgyia fascelina, Bombyx Rubi, B. Quercus, and Ange- 



rona ])runaria, all of which 1 find hybernate as larvae. Will 

 you kindly tell me the best way of keeping them alive during 

 the winter, and how soon they will lay up, as I am anxious 

 to breed them and keep them alive ? — [Miss) J. Pycroft ; 18, 

 Paultons Square, Chelsea, December 19, 1867. 



[The larvaG of Bombyx Hubi must be placed out-of-doors, 

 exposed to all weathers, throughout the winter : the others 

 may be left in the usual breeding-cages. All hybernating 

 larvae retire as soon as the leaves of their food-pfant fall. — 

 — E. Newi7ian.'\ 



