120 MARINE AND FISHERIES 



5 GEORGE v., A. 1915 



of these were put in breeding jars, but did not emerge until July 13. On July 14 

 I visited this place again but could not find a single specimen, nor any sloughs 

 along the shore. The other locality was the south east shore of Station Island, 

 but the nymphs were not abundant. Only one imago, a female, was captured. 



Leptophlebia (?) praepedita Eaton. 



The only representative of this genus was a single almost mature nymph 

 taken on July 21st in quiet water at the side of an old lumber chute. I was un- 

 successful in breeding it and so am doubtful as to the species. It agrees with the 

 description by Professor Needham, Bulletin 86, N.Y. State Museum, but this 

 description is rather more generic than specific. 



Genus Blasturus. 



Blasturus cupidus Say. 



This is an early species. Nymphs were first taken May 23. Subimagos 

 appeared May 31 and transformed next day. The imagos were never very abun- 

 dant and were captured around Station Island only. The last observed was June 9. 



A small nymph collected May 31 was observed to be filled with small oval 

 brownish bodies. These, upon dissection by Mr. A. R. Cooper, were found to be a 

 trematode of the genus Halicometra and its eggs. Another nymph taken some 

 time afterwards was also discovered to be parasitized. 



Blasturus nebulosus Walker. 



The nymph and imagos of this species were first taken June 9, on a small 

 bare granite island, a short distance out in the open bay. On the top of this 

 island were numerous pot holes of all sizes filled with water, and in these, under 

 loose pieces of rock and some rubbish, the nymphs were very abundant, having 

 tadpoles, chironomid larvae and water beetles for associates. Many were covered 

 with Vorticella. Several nymphs were seen to crawl out of the water and trans- 

 form on the rock. Subimagos were clinging to the sides of the rocks in sheltered 

 places while a few imagos were flying above the pools. 



This species was again taken on June 27th on an island 5 miles from the 

 mainland. This island had an area of about 3 acres and was almost smooth bare 

 granite. On top was a pretty lagoon margined with water plants, shrubs and a 

 few small trees. Imagos of B. nebulosus were dancing over this pond in the sun- 

 light about 3 p.m., matings frequently occurring. A few nymphs were taken 

 from the lagoon. 



Up to the present time I have not been able to find any difference between 

 the nymphs of these two species, but am adding a description of the nymph of 

 Blasturus nebulosus. 



