14 
THE ENTOMOLOGIST’S WEEKLY INTELLIGENCER. 
Argyresthia Albistriella. Powerscourt, 
August. 
Gracilaria Tringipennella. Galway, 
June. 
G. Phasianipennella. Coast, May. 
Coleophora Alcyonipennella. Do., J uly. 
C. Albicostella. Galway, June. 
C. Discordella. Do., do. 
C. Vilisella. Powerscourt, May. 
Batracbedra Prseaugustella. Do., Aug. 
Chrysocovis Festaliella. Coast, May. 
Elachista Cygnipennella. Do., June, 
July; abundant. 
Litbocolletis Bremiella. Powerscourt, 
May. 
Pterophorus Trigonodactylus. Coast, 
July. 
P. Tetradactylus. Galway, June. 
Powerscourt is situated among tbe 
Wicklow Mountains, and is the property 
of Viscount Powerscourt ; it is a lovely 
country, and well wooded. My success 
during a few days in Galway was mainly 
attributable to the kindness of Mr. Bircb- 
all in showing me the best localities. So 
considerable a list of captures in a season 
so wet and cold as tbe last appears to me 
to prove either that Ireland is not so poor 
in an entomological point of view as has 
generally been supposed, or that Irish 
insects are less affected by unfavourable 
weather than English ones. — Charles 
G. Barrett, 30, Parkgate St., Dublin; 
March 18, 1861. 
OBSEEVATIONS. 
A Gruhhery of Cossus Ligniperda . — 
This morning (April 2nd) a man brought 
me two Cossus larvae, or (as he called 
them) “ red grubs ; they smelt wonderful 
to be sure, but perhaps they might be 
something in my way.” On his further 
informing me that he found them just 
under the bark of a tree he was cutting 
up that had been blown down in the late 
high winds, and that he “reckoned” 
there might be more, as tbe holes were 
“ wholly wonderful,” I immediately ac- 
companied him to the spot, and found it 
was a small elm tree, grown on the side 
of a bank, in a hedgerow. Truly, from 
the honeycombed appearance of part of 
tbe stem, my countryman might well 
imagine there were more. The holes 
seemed confined to a small space about 
two feet in length and about one foot 
distant from the ground. Removing a 
small .portion of the bark I found nine 
larvas between it and the wood of tbe tree. 
Anxious to obtain as many as possible, I 
sent for a saw, and had the mined por- 
tion of the tree taken off and brought 
home. The stem thus cut measured one 
way fifteen inches in diameter, the other 
way twenty-three inches in diameter, both 
measurements taken at the bottom of my 
block (for the tree was not round-shaped) ; 
the length of the block was, as I before 
said, two feet. I had a large earthen 
pot in which I was desirous of placing 
the mass intact, but found it impossible, 
as my pot, though rather more than two 
feet deep, was only sixteen inches wide. 
I therefore cut the block down to the 
necessary size (about thirteen inches in 
diameter), and in so doing disimbedded 
twelve full-grown larvae, twenty-one of a 
two years’ growth, and thirty-four of ap- 
parently one year’s growth, — a total of 
sixty-seven, and apparently tbe remainder 
of the block was as densely populated as 
the part I cut up. The upper part of 
the block where sawn oflf had no traces 
of holes; tbe lower part was two-thirds 
rotten as tinder, the other third having 
only a few holes visible; the centre that 
I exposed to view was riddled. Is it 
usual to find Cossus larvae thus crowded 
together? and do you often find different 
aged broods in the same tree ? Otherwise 
how are the various sizes to be accounted 
for? some being only seven lines long, 
others twenty lines, and the largest ones 
thirty-one and thirty-two lines. — W.T. R. 
[Have any of our readers met with a 
