ODONATA OF THE VICINITY OF GO HOME BAY 75 



SESSIONAL PAPER No. 39b 



mer. The dark-coloured nymphs cling to the under-sides of stones near the shore^ 

 and are rather more generally distributed than those of Boyeria, as they also occur 

 in the smaller recesses or quiet places, where a few reeds and other water-plants 

 grow. They probably feed largely on Mayfly nymphs, particularly Heptagenia, 

 Blasturus and Ephemerella, which are abundant in places frequented by Basiaeschna 

 and Boyeria. The exuviae may be found, like those of Boyeria, on logs, 

 wharves and boathouses, sometimes at a height of six feet, but they also occur, 

 like those of Anax and Aeshna, on reeds. 



Full-grown nymphs were found on our arrival at the Station in 1912, on May 

 20, and continued to be found until June 10. The first adults seen were those 

 which emerged in the laboratory on June 8th. Adults were taken until June 25th, 

 but were not noticed after this date. They probably were on the wing for some time 

 afterwards, however, for in 1907 we captured specimens repeatedly until July 17th. 



This species may often be seen patrolling the margins of the bay and the 

 Go Home River, usually flying higher than Boyeria. It may also be found in the 

 open rocky woods, a short distance from the water. It is active during the day 

 but also flies until well after sundown. 



On June 24, 1907, a female was taken in the act of carrying off a teneral spec- 

 imen of Gomphus spicatus, upon which she was feeding. 



The egg-laying habits of this species, which we have not observed at close 

 range, have been described in detail by Needham ('01). 



Aeshna eremita Scudder. 



This large boreal species is quite scarce in this locality, though I found it 

 common in Algonquin Park in 1902 and it has been taken occasionally as far 

 south as Toronto. In the Canadian zone it is an abundant and wide-spread 

 species, ranging across the continent and northward to the Arctic Circle. 



The only adults observed at Go Home Bay were a pair taken by Dr. A. G. 

 Huntsman on Aug. 17, 1907. A few nymphs have been taken from reed beds 

 along the shores of ponds. Two of these taken early in August were full grown. 

 The nymph has been described by Cabot ('81) and by the writer ('12a). The 

 ovipositing habits have also been described by the writer ('12a). 



Aeshna clepsydra Say. 



Next to Ae. canadensis, this species has been found more frequently than 

 any other Aeshna in the vicinity of Go Home Bay, although, generally speaking, 

 it is one of the rarer species of the genus. 



The nymph, which has been described by the writer ('12a), is occasionally 

 dredged from reed beds along the borders of shallow ponds or bays. Two males 

 were reared by Mr. A. R. Cooper in 1910 emerging on July 25th and 28th. Two 

 other nymphs taken in July were nearly ready to emerge. 



Th3 adults may be taken during the latter part of July and August, flying 

 over the reeds and sedge of their breeding-grounds or in the open woods farther 



