AUGUST. 
263 
set together as to make yellow spots^ visible a long way off. 
These little flocks continued at intervals for some miles. 
F. — A very large species of Hemerobius^ the Canadian 
Pearl-fly ( Chauliodes Pectinicornis J ,^ was given me yester- 
day : it measures three inches and a half in spread of wing : 
the jaws are curved and sharp ; the antennae strongly pecti- 
nate ; the wings tinged with pale brown^ the nervures spot- 
ted with black ; they are netted, but the cross nervures are - 
few. I caught a pretty Sphinx, busily hovering over some 
CANADIAN PEARL-FLY. 
(Chauliodes Pectinicornis. ) 
tubular flowers in a friend's garden, during the heat of the 
day; the Humble-bee Hawk-moth ( Sesia Pelasgus) ; the 
wings are reddish brown, with hyaline disks. It is rare, as 
I have never met with it before. 
C. — Two or three specimens of a curious Musca (Ta- 
china ?) have occurred lately ; the abdomen is large 
and round, of a scarlet colour, covered with strong upright 
spines or bristles. I have also taken the Sheep Gad-fly 
This fine insect, I should state, the only living specimen I ever saw, 
was not taken in the neighbourhood of Compton, hut at Quebec, on the 
30th of July, 1835. 
