INSECTS AND THEIR ALLIES 
systematically collected by anyone to my knowl- 
edge. Most of the names here listed were 
kindly contributed by Mr. M. C. Van Duzee, of 
Buffalo, who has, however, collected at Toronto on 
very few occasions. The Cecidomyidae were listed 
by Dr. Cosens. Most of the Syrphidae were col- 
lected by Dr. Brodie, and some additional species by 
the writer. A number of species in other families 
were also listed from Dr. Brodie’s collection, while 
the Dolichopodidae, in addition to the species taken 
by Mr. Van Duzee, were collected and determined 
by the writer. In the Hemiptera, very little col- 
lecting has been done, and the few species listed, with 
the exception of the Aphididae and Coccidae, are in 
the collection of the Provincial Museum. The Aphi- 
didae are nearly all gall-forming species, the list 
having been kindly furnished by Dr. Cosens. The 
Coccidae, with one or two exceptions added by the 
writer, were taken from Mr. T. D. Jarvis’s list of 
the Coccidae of Canada (41st Ann. Rep. Ent. Soc. 
Ont., 1910, p. 64-77). The Orthoptera and Odonata 
were collected and determined by the writer and are 
believed to be fairly complete. The few species 
belonging to the other orders listed were determined 
by Messrs. Nathan Banks and W. A. Clemens (Ephe- 
meridae). 
In addition to the gentlemen mentioned in the 
preceding paragraph, I have been ably assisted in the 
preparation of these lists by Messrs. J. C. Crawford, 
H. L. Viereck and S. A. Rohwer, who kindly revised 
297 
