5 GEORGE V. SESSIONAL PAPER No. 39b A. 1915 



II. 



NOTES ON THE ODONATA OF THE VICINITY OF GO HOME 

 BAY, GEORGIAN BAY, ONTARIO. 



By E. M. Walker, B.A., M.B., Assistant Professor of Zoology, 



University of Toronto. 



(Plates III — IX, and 1 -figure in text) 



When I first visited the Biological Station at Go Home Bay, Ont., in June, 

 1907, 1 was struck by the great abundance of dragonflies there, and being specially 

 interested in this group of aquatic insects, particular attention was given them 

 during the two months that I spent there that year. 



During this period an effort was made to collect both adults and nymphs 

 of all the species native to the immediate vicinity of Go Home Bay and the Go 

 Home River, and to determine as much as possible of their life histories, including 

 their seasonal and ecological distribution, habits of flight, food, enemies, etc. 



As practically nothing was previously known of the Odonata fauna of this 

 locality, the preliminary work of collecting and determining species and rearing 

 the nymphs formed the major part of the work and in this occupation the writer 

 was ably assisted by Mr. W. J. Fraser of Toronto. A considerable quantity of 

 material was also collected by Dr. A. G. Huntsman of the Biological Department, 

 University of Toronto. 



In 1908 1 spent another period of two months at the Station, but being occupied 

 with other work, little was added to the data already accumulated. 



A third visit was paid to the Station in 1912, and as I arrived there on May 

 19th, nearly a month earlier than on either of the two previous occasions, and 

 remained until Sept. 11th, I was able to add a number of observations to the 

 seasonal distribution of some of the earlier and later species. No additions were 

 made to the Go Home Bay fauna, but two species of Sympetrum previously un- 

 known to this district were taken at the Giant's Tomb Island. 



Mention is also made in this paper in the list of species, of a number of nymphs 

 collected by Mr. R. P. Wodehouse at various other points along the shore of 

 Georgian Bay. 



Physical Features of the Go Home Bay District. 



Go Home Bay (Bushby Inlet) is situated on the east side of Georgian Bay 

 about fourteen and a half miles north of Penetanguishene and its topography 

 is typical of a large part of the eastern shore of this body of water. 



The physical characteristics of this region have been described in some detail 

 by Bensley ('14) and it will only be necessary here to refer to a few of the more 

 salient features. 



