ODONATA OF THE VICINITY OF GO HOME BAY 79 



SESSIONAL PAPER No. 39b 



crawl to the verandah of the dwelling-house, forty or fifty feet from the water 

 before transformation takes place. Under the edge of the boathouse roof is 

 another favorite spot. They may also transform on bushes. Two well-grown 

 nymphs of this species were found in the stomach of a channel catfish {Ameiurus 

 nigricans Lesueur) by Mr. A. R. Cooper. Full-grown nymphs were taken by 

 Mr. Wodehouse at Shawanaga Bay, near Skerrevore, June 9, 1912, in "weedy 

 shallow water, sand bottom." 



Macromia illinoiensis Walsh. 



The long-legged, spider-like nymphs of this dragonfly closely resemble those 

 of the preceding species, but are somewhat larger and less distinctly marked, 

 besides differing in the characters given by Needham ('01). Like D. transversa 

 they frequent well-aerated waters, being common everywhere along the shores 

 of Go Home Bay, except in the sheltered bays and are absent from the enclosed 

 lakes. They generally occur among boulders on a sandy or somewhat muddy 

 bottom. The nymphs are not infrequently seen sprawling on the surface of the 

 sand or mud bottoms or on the stones. The exuviae are often more or less muddy, 

 differing in this respect from those of D. transversa which are always clean. 



Like transversa they often travel a considerable distance from the water 

 prior to the emergence of the imago. I have found exuviae on the verandah of 

 the dwelling-house, and under the eaves of the boathouse, on rocks along the 

 shore a few feet or several yards from the water's edge or on tree trunks 3-6 feet 

 from the ground. 



The period of transformation commences about the end of June and continues 

 throughout the first week in July. The first adult observed in 1907 emerged on 

 the Station Island on June 28, while in 1912 the first individual was noticed on 

 June 31. In about a week's time they were common about the island, flying 

 rather low and frequently resting on the branches of trees. Both sexes appeared 

 in about equal numbers and were easy to capture. In about a fortnight they had 

 spread over the country and were no longer so easily obtained. 



During the latter half of July and throughout most of August they may be 

 found in sunny weather flying back and forth along the edges of woods or in small 

 open places partly enclosed by trees. They fly swiftly, but as a rule not beyond 

 reach of the net, and as they follow a more or less regular beat they are not very 

 difficult to capture. Flight ceases at sundown and during dull weather. 



Neurocordulia yamaskanensis (Provancher) Selys. 



In the 36th Ann. Rep. Ent. Soc. Ontario, 1905, p. 69, exuviae of a Neurocor- 

 dulia, referred to this species by supposition, were recorded from Algonquin Park, 

 Ont. Shortly after the Station was opened in 1907, exuviae of the same kind 

 were found on the sides of the Go Home Bay Dock. On the morning following 

 this discovery (June 28th) the dock and the steep rocks of the neighbouring shores 

 were carefully searched for newly-transformed adults and one was finally detected 



