194 
THE SUBSTITUTE. 
piDnetl and set, such wholesale 
doings cannot be defended. Sup- 
pose that one-fourth part of the 
•2000 Corydon were females (pos- 
sibly there were more, but we will 
assume that 500 had not laid their 
eggs), and that each would have 
laid at least 20 eggs, then there 
were 10,000 caterpillars cut off at 
a blow. Under such a system, 
pursued by many collectors, exter- 
mination would be rapid. Is it 
not probable indeed that some of 
our insects are already extin- 
guished in certain localities by 
such proceedings? There is Va- 
nessa C-album, for instance, which 
in former time was common 
enough at Penge, but to our 
knowledge it has not been seen 
there or elsewhere near London 
for more than twenty years ; and 
it is quite possible that the scarcity 
of this and other insects in places 
where for a long time they used to 
abound isdue to the rapacity of col- 
lectors. This very possibility, we 
think, makes the subject deserving 
of consideration, and in addition 
there are the higher motives to 
forbearance that should actuate 
all true lovers of Nature. We 
should all be impressed with the 
conviction that no one has the 
right wantonly to deprive of life 
and enjoyment the exquisite and 
harmless examples of Creative 
Power. 
TO CORRESPONDENTS. 
All communications to be authen- 
ticated bi/ the name of the writer, 
and to be addressed To the Em- 
TOR OF ‘The Substituxk,’ 9, 
Devonshire Street, Bishops- 
GATE Street, London, N.E. 
It is particularly requested that 
all Names of Insects may be written 
plainly and without abbreviation, 
and that they may be arranged in 
the order of any of the printed lists. 
‘The Substitute’ will be con- 
tinued for Twenty weeks, and will 
be forwarded weekly by post to 
Subscribers of Five Shillings, 
which amount may be sent in 
Postage-stamps to the Publisher. 
7 he Paper will always be ready on 
the Friday, and may be procured 
of Kent 6e Co., Paternoster 
Kow, as well as of the Publisher. 
Several communications only 
wait for room. 
DUPLICATES AND DESIDERATA. 
Lepidoptera . — I now enclose my 
proposed list, so that any entomo- 
logist who is in want of any of the 
species can write to me now, and 
I will procure them for him in the 
course of the season ; some of 
them are common in the South, 
though not Boreal spe«ies, so that 
some of our “ northern ” friends 
may be in want of them. I have 
also made a list of some of my 
