318 Mr. Wid canteen Life-History of Boreus hyemalis. 
before it was attacked and killed by mould and mites. 
The damaged pupa was at once preserved in spirit, but is 
useless for identification purposes. It appears to be that 
of a wingless insect. I have been unable to obtain any 
more specimens of the parasite since. To attack Boreus 
it must appear in the early part of the year, and one would 
ask what host, if any, it selects from August to December, 
also in what stage is Boreus attacked, as the egg or larva ‘ 
Since writing this note I have observed several imagines 
bruising the bases of green moss leaves with their man- 
dibles and quite plainly feeding thereon for a minute or 
two at a time. 
[ have also to add that females on being disturbed exude 
a drop of colourless fluid, of pungent odour, from the tip 
of the ovipositor. This liquid is however by no means so 
malodorous as that of Panorpa. 
C. L. W. Nov..21, 1921. 
BooKS REFERRED TO. 
Braver. Verhandlungen Zoologisch-Botanischen Vereins 
in Wien, 1863. Pages 320-323. 
MacLacuian. Monograph of British Neuroptera-Plani- 
pennia. Trans. Ent. Soc., 1868. 
EXPLANATION OF Puiate VIII. 
Fia. 1. Boreus, 3 (actual length 3°5 mm.). 
2. » (actual length 5 mm.). 
3. » and 9 (slightly enlarged). 
4, ». eggs in moss (actual length *5 mm.). 
5. 52 (CLE domes’ is At eae) 
6. .,  full-fed larva (dorsal view) (x 2). 
7. ,  full-fed larva (side view) (x 2). 
8. ,» ~ pupa in moss, 3 (X 3). 
