2 
THE WEEKLY ENTOMOLOGIST. 
however seems confident that the 
effect of “ BufFon’s Exterminator ” is 
by no means an agreable one to the 
parasites in question. 
The remarks herein contained are 
of great importance to all Entomolo- 
gists, and we are convinced that we 
do a service to each by bringing them 
thus prominently forward. Their 
author appears to have gone into the 
question in a really systematic way, 
and we doubt not that he will yet 
succeed in satisfying himself on those 
points which are yet mysteries to 
him. Meanwhile we leave the subject 
open to discussion. 
The Weekly Entomologist may be 
obtained of Mr. T. Blackburn, 
Bowdon, Cheshire, by post, price 
Three Shillings and Three Pence 
per quarter, prepaid. 
Also of C. Andrew, 129 High St. 
Cheltenham, J. Brown, 2 Collingate, 
York, S. Styles. 163, North St. 
Brighton, J. E. Hobson, Queen St. 
Hartlepool. T. Cooke, Naturalist, 
513, New Oxford Street, London. 
Those who make any discovery, or 
capture of a rare species, or observa- 
tion of general interest, are requested 
to communicate, at once, a notice of 
the same, to Mr. T. Blackburn, 
Bowdon, Cheshire. 
Booksellers willing to undertake 
the agency in their respective neigh- 
bourhoods are requested to communi- 
cate with the same gentleman. 
Remittances should be sent in Post 
Ollice Orders or Stamps. 
OBSERVATIONS. 
NEUROrTERA. 
Mormonia hirta. — Those who have 
a microscope should examine the 
wings of the male of Mormonia hirta. 
In addition to the hair with which 
the wings of the Trichoptera are 
clothed there is a multitude of minute 
objects which, when viewed with the 
pocket lens give one the idea of scales. 
This idea is not dispelled when they 
are seen with a power of 20 linear ; 
but when a power of about 200 is used 
the observer is undeceived ; they are 
then seen to be little pod-like articles 
scattered singly, — though somewhat 
thickly over the membrane of all the 
wings. On scraping some of them off, 
and placing them between two pieces 
of glass to put away for further 
examination, they were found to be 
crushed or burst by the pressure ; 
they then presented the appearance 
that a crushed goose-berry would do 
( excepting the pulp) with a gap in 
one side. 'These remarkable objects 
lie lengthwise on the membrane, and 
are fixed to it by a short peduncle, 
which is scarcely visible unless they 
are removed from the wing. They 
are possessed exclusively by the male 
insect ; the female has the wings more 
thickly clothed with hair. B. Cooke, 
Manchester, Feb. 7. 1863. 
Notes. Some of the Agrions do 
well by having a hog’s bristle inserted 
through the abdomen. It prevents 
breakage but injures the colors. 
The Baron du Selys wrote to ask 
me once “ if it was true that I had 
really taken the Agrion iosscUatus in 
