66 DEER. 
October 19th. . . . In the winter, when we are shooting hinds, 
I have no doubt I can send you some off the Deer. They will then 
have no wings, and are a good deal bigger.” 
On November 12th Mr. D. Campbell kindly sent me some more 
specimens of L. cervi, mostly in very good order, and still preserving 
their wings. He noted :— 
“IT enclose a few Deer Forest Flies alive. They are difficult to 
get now, but to-day being fine and mild, I was lucky enough in getting 
afew. I hope they will reach you alive; I have noticed they live but 
a short time after being captured, at all events if kept about one’s 
person.’’—(D. C.) 
These specimens were in excellent condition, and I greatly re- 
eretted that from great pressure of business I was not able to continue 
investigation of the more elaborate portions of the structure of the 
foot, which I commenced in 1895 with regard to that of H. equina, 
but shall hope to carry this out at a future time. 
The following notes and also observations collected by Prof. J. P. 
E. Fred. Stein* are of much interest, both with regard to various 
points of life-history of this Deer Forest Fly, and also as showing 
much coincidence, so far as we have observations, between its habits 
on the Continent and as observed by Mr. Campbell, Prof. Stein 
observes :— 
««The winged males of this species are met with from late summer 
until autumn in leafy forests | frequented by the Roe or the Red Deer; 
the females, on the contrary, with their wings shed, are to be found at 
the same time of year in the hairy coats of the above-named kind of 
Deer, and also of the Elk. The natural history of these flies still 
requires more explanation, which can only be acquired by observation 
of them on their host animals.” 
After some further remarks, Prof. Stein notes that on a visit to 
Herr Hartmann (‘‘an assiduous dipterologist”’), at Weissenbach am 
Attersee,} that he had taken many pairs of these flies alive on the Red 
Deer; and with his permission, Prof. Stein printed his information on 
this subject, which I have given verbatim as follows :— 
“Herr Hartmann related :—‘ Wingless individuals of the ‘“ Deer 
Louse Fly” I found the whole winter through, sitting on one another 
in the coat of the Red Deer; the uppermost insect was always a male. 
«««The females enclosed with their males in a glass often deposited 
pup, and after that pairing again always followed. . . . On the 
* «Deutsche Ent. Zeit.,’ xxi. 1877, Heft ii.: ‘‘ Der Naturgeschichte der Laus- 
fliege, Lipoptena cervi, Nitzsch,” von J. P. E. Fr. Stein, pp. 297, 298. 
+ ‘‘Laub-waldern,”’ forests of deciduous trees, as opposed to forests of pine 
trees. 
{ The Atter or Kammer Lake is in Upper Austria.—Ep. 
