THE ENTOMOLOGIST. 355 



oviparous. There are some Aphides, of which all the indivi- 

 duals are winged till late in the autumn, and which do not 

 migrate; of these is the Aphis of the sycamore (A. plata- 

 noides), which sometimes occurs in immense swarms on the 

 south coast of England, and is partly kept in bounds by a 

 proportionate number of Syrphi, of whose larvae it is the 

 chief food. This year is an especial epoch of the plum-tree 

 Aphis (A. Pruni), and its overplus population has colonized 

 the apple-tree and the cherry-tree ; an unusual occurrence." 



Does Thecla Quercus ever remain in tJte Pupa state for a 

 Year ? — To-day I found a male T. Quercus in one of my 

 larva-cages. I have not taken a single larva of the species 

 this year, and I have not dug for pupa for some months; so 

 how it got there I do not know, unless it has remained in the 

 pupa since last year, as then I had a number of the larvae. Is 

 this a usual thing? — IV. H. Cole; Croxton, Thetford, 

 Norfolk, July 9, 1871. 



I regret my inability to answer this. 



Colias Europome. — If, in any future edition of your 

 * British Butterflies,' you should care to figure Colias 

 Europome, I shall be very happy to lend you, for that 

 purpose, a fine specimen in my possession, taken with, 

 I believe, three others, by a local collector at Horsham. — 

 [Rev.^ Windsor Hamhrough ; Clarendon House, Worthing. 



I shall be much obliged for the loan of the specimen, 

 whenever it can be sent by a safe hand. I have never known 

 of any authentic British one. 



The New Moth-trap. — A short time ago there was some 

 correspondence in the 'Entomologist' about the American 

 moth-trap, which does not seem to be considered of any use. 

 I shall be very much obliged if you can give me any 

 information about the new moth-trap, without the aid of 

 light. Does it answer ? I think that it would be preferable 

 to the American moth-trap, but should like to have the 

 opinion of some one who has used it. — W. H. Cole; 

 Croxton, Thetford, Norfolk. 



I do not know the new moth-trap. 



Triphddna Curtisii. — Mr. Nicholas Cooke, of Liverpool, 

 has bred several T. Curtisii: his larvae did not assume the 

 pupa until towards spring, but still much earlier than 

 T. Orbona. 



