THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
189 
Eupilhecia Larva;. — Permit me to ask 
Mr. C. S. Gregson, .the President of the 
Northern Entomological Society, upon 
what grounds his assumption that by 
feeding a Eupilhecia larva upon sallow — 
its known food being yarrow — the iusect 
produced might be changed from red to 
white, and whether, through his long ex- 
perience, he has observed such a change 
to lake place, because such a fact, sup- 
ported by positive data, would be ex- 
tremely interesting. I do not pretend 
to discuss the question whether E. Sue- 
cenluriata and Sabfulvata be one and 
the same species ; this I leave to more 
able and experienced entomologists. I 
have at this moment a few ova of Sub- 
fulvata, and if the laivte hatch I may 
probably risk the lives of two or three to 
pul Mr. Gregson’s theory to the test. — 
H. D’Oevelle, Alphington, near Exeter ; 
Sept. 3. 
EXCHANGE. 
Colias Edusa. — I have a number of 
specimens of this insect, of both sexes, 
with which I shall be glad to supply any 
one requiring them, in exchange for 
other Lepidoptera. My desiderata are 
very numerous. I should prefer if per- 
sons wishing to exchange would write 
first. — T. W. Lang, 66, Lambeth Ter- 
race, Bouge Bouillon, Jersey. 
JDupiicate Lepidoptera. — I have dupli- 
cates of the following ; — 
C. Edusa (24) 
*A. Crataegi (1) 
H. Hyperanthus (22) 
A. Selene (7) 
♦M. Alhalia (4) 
A. Paphia (1) 
A. Lonicerae (3) 
*A. Trifolii (6) 
A. Filipendulae (4) 
S. Ligustri (2) 
Populi (1) 
T. Tipuliformis (4) 
H. Hectus (30) 
M. Miniata fl) 
T. Batis (2) 
N. Plecta (4) 
*E. Fuscula (4) 
O. Sambucata (4) 
V. Maculata (1) 
B. Eepandata (6) 
L. Miaria (2) 
H. Progemmaria (8) 
B. Perla(l) 
M. Alchemillata (4) 
H. Nymphteata (2) 
S. Clathrata (2) 
E. Bipunctaria (12) 
C. Forfichllus (2) 
Phibalocera Qiiercella 
With the exception of those marked * * 
all the above are in good condition. My 
wants being too numerous to mention, 
applicants had better write first. — H. R. 
Cox, 10, Thurlow Villas, West Duhvich, 
S. 
AMATEUR DEALERS. 
To the Editor of the ‘ Intelligencer.’ 
Sir, — Most of your readers will regret 
the turn which the discussion about 
“Amateur Dealers ” has taken ; the real 
culprits are escaping observation while 
your pages are occupied with personal 
recriminations. 
In opening the correspondence Mr. 
Hawley’s object was to expose mean 
selfishness, to show up the “ dog in the 
manger ” spirit, the intention of those of 
whom he wrote evidently being to anni- 
hil^.te the species in that locality, so that 
others might not obtain it, and thus 
increase the value of their own specimens. 
Ou the contrary, Mr. Birchall’s object 
was to secure a large number of speci- 
mens, to enable him to supply not only 
