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 



