THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
189 
Leith Walk, Edinburgh ; September 2, 
1856. 
[We are surprised to liear of discor- 
della being already fed up, But, 1°, it 
is a fact that most Coleophora continue 
to come out for a long time; we have 
ourselves bred some through a period of 
six weeks : 28, the eggs laid by the first 
developed specimens produce larvae which 
become sooner full-fed than the offspring 
of the later developed specimens : 3°, 
some of these early larvae produce perfect 
insects prematurely, but we have yet to 
learn that such are fertile and themselves 
lay eggs. There is but one brood, as we 
interpret the significance of that much 
disputed term, though some may attain 
their last stage eight months before the 
others.] 
Asellus. — You have concluded Asellus, 
in ‘ Manual,’ No. 7, without mention of 
Marlow!!! Would it interfere with your 
plan to begin the next number with, 
“ Two specimens have occurred lately in 
the beech woods near Marlow, at the end 
of June and beginning of J uly.” Asellus 
is an interesting species, and as the two 
specimens above named occurred casually 
(one on a boy’s hat !), and on different 
sides of the river (one in Bisham Woods, 
and the other on Marlow Common, or 
two miles apart), and taken, one by Mr. 
Atkinson and the other by myself, I do 
not like to read that “ Asellus seems almost 
confined to the New Forest.” If looked 
for here it certainly would be found. — 
Bernabd Smith, Marlow ; August 30, 
1856. 
[As we cannot very well put Mr. Smith s 
note in the ‘Manual,’ No. 8, which has 
long ago been all printed, we give it the 
next widest circulation by inserting it 
here.] 
A New Want. — Referring to your 
leader in No. 20 of the ‘ Intelligencer,’ 
allow me to ask you why we contract our 
studies to British insects only? Is it 
not for want of a Manual of European 
Lepidoptera ? Of course no descriptions 
would be required of British species ; a 
simple reference to the * Manual’ you are 
now obliging us with being sufficient. 
But who is to do it? You, Mr. Editor, 
seem to have plenty of “ irons in the 
fire,’’ but you know probably those who 
are willing and capable: they would be 
abundantly thanked, I am sure. — Fred. 
Kenderdine; Manchester, September 1, 
1856. 
[Our correspondent has a very sanguine 
idea of the literary-disposed entomolo- 
gists, if he supposes a Manual of Euro- 
pean Lepidoptera could be easily forth- 
coming. We have lately been moving 
heaven and earth to get a Manual of 
British Beetles, but the Coleopterists 
seem so deficient in energy that, great 
as they admit the desirableness of such a 
work, no one has pluck enough to under - 
take it.] 
Are they for Sale or Exchange, or 
how P — Might 1 suggest to your nume- 
rous correspondents who send word that 
they have captured certain insects, and 
that they will be glad to hear from any 
one wanting them, that they should state 
whether they will sell or exchange, for at 
present it is impossible to know. — G. 
Rudston Read, Rectory, Sulton-on-Der- 
went, York; September 1 , 1856. 
[We are not aware of a single cor- 
respondent mentioning he had insects to 
spare who had any notion of selling them, 
and we fancy very few have conceived 
the idea of making a regular exchange. 
Most persons, like Mr. Greene, “expect 
no return ; the offer is principally ad- 
dressed to beginners, who would not be 
able to send anything they wanted ” (see 
p. 173) : though of course we perfectly 
understand the feeling which would in- 
duce even an incipient to make the best 
return he could for anything he received. 
Selfishness and greediness in such matters 
are, judging from our experience, not 
common faults.] 
A Mechanical Spider. — A spider made 
its web in my garden between the porch 
