88 . MARINE AND FISHERIES 



5 GEORGE v., A. 1915 

 Leucorrhinia glacialis Hagen. 



A single specimen of this species was taken at Go Home Bay by Mr. J. B. 

 Williams, on July 14, 1909. It is more common farther north. 

 The nymph has been described by Needham ('01). 



Leucorrhinia Intacta (Hagen) Hagen. 



This well-known species occurs but sparingly in the Go Home District, where 

 it is occasionally seen in the open marshes bordering shallow bays. It is associated 

 in such stations with L. frigida which is more generally distributed and far more 

 numerous, but we have never taken it from the sphagnum bordered ponds, where 

 L. frigida always occurs. 



The nymph has been described by Needham ('01.) We have not found it 

 in this district, but have taken it in abundance at Toronto and Lake Simcoe, 

 where it is the only species of the genus. 



A single dead specimen of L, intacta was found in a cobweb on the small 

 island referred to under Enallagma hageni and Libellula quadrimaculata (vide pp. 

 67-90). 



Sympetrum danae (Sulzer) Ris. 



Syn. S. scoticum (Donovan) Newman. 



A single male of this northern species was taken from the edge of a very 

 shallow pond in the sand on the Giant's Tomb Island, July 14, 1912. It was a 

 teneral and had evidently emerged on the day of its capture. It was kept alive 

 until the colour pattern was fully developed. 



This circumpolar species is very common in Ontario north of the Great Lakes. 

 With the exception of a single individual taken at De Grassi Ft., Lake Simcoe, 

 the present record is the most southerly for this species in the province. 



Sympetrum costiferum (Hagen) Kirby. 



Our earliest captures of the adult of this species in 1907 are from the Giant's 

 Tomb Island, July 29, 1907. On this date a number of young individuals were 

 flying about the shallow ponds in the sand and many exuvisB were found adhering 

 to the reeds. In 1912, a few tenerals were taken at nearly the same spot on July 

 14, but they did not appear at Go Home Bay until about a week later. They soon 

 became generally distributed in all the open reedy marshes bordering ponds and 

 inlets and were often also seen away from the water. They became quite abundant 

 in August and were still common when the Station was closed on Sept. 11. At 

 this time many pairs were seen in copula. 



As with most of the Sympetrums, we have neglected to rear the nymph though 

 we are satisfied that the exuvi® referred to above and a number of full-grown 

 nymphs of the same kind, taken at Go Home Bay and at Skerrevore, Ont., (by 



