THE ENTOMOLOGIST. 855 
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 larve 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 the 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 larve. Is 
this a usual thing?—W. H. Cole; Croxton, Thetford, 
Norfolk, July 9, 1871. 
I regret my inability to answer this. 
Colias Europome.—lIf, 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 Hambrough ; 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. 
Triphena Curtisit.—Mr. Nicholas Cooke, of Liverpool, 
has bred several T. Curtisii: his larve did not assume the 
pupa until towards spring, but still much earlier than 
T. Orbona. 
