176 THE CANADIAN ENTOMOLOGIST 



and one of them decidedly worn. The third specimen was 

 canadensis, as were apparently the majority, though I took very 

 few others. 



On Sept. 19 I noticed /Eshnas flying about the pastures 

 where A. constricta had been so abundant, and at first sight I took 

 them for this species, which was still abroad, though in declining 

 numbers. My suspicions were aroused, however, on seeing them 

 fly to rest upon the trunks and branches of trees, a habit not 

 characteristic of constricta, so I captured one and it proved to be 

 A. verticalis Say, a species which until then I had not seen that 

 season. Several others of both sexes were taken with only one 

 constricta among them, and during the few remaining days I spent 

 at the Point, i. e., until Sept. 23, verticalis was the only species 

 noticed about the pastures. All were old individuals, most of the 

 females having broken abdominal appendages. This species is of 

 rather regular occurrence at the Point but always appears late 

 and in fully mature, if not worn, condition, and I have never found 

 the nymph nor seen the adult in the vicinity of the marshes in 

 this locality. I believe, therefore, that it does not breed here to 

 any extent. 



On Sept. 10, 1915, at about the same spot where verticalis 

 was seen in 1916, I took a male of A. tuherculifera E. Walk., a 

 rare species, never known before from this locality, although 

 regional. On July, 1, 1905, a single male of A. sitchensis Hagen 

 was captured by Mr. A. L. Walker, and on Sept. 2, 1906, I took a 

 female of A . subarctica E. Walk. Both of these are northern species, 

 the normal southern limits of whose range is far north of Lake 

 Simcoe. They have not been seen here since. 



Two other species of ^shna are known from De Grassi Point, 

 A. clepsydra Say, of very rare occurrence, and A. umhrosa E. 

 Walk., which is a regular resident of the upper shadier parts of 

 the creeks, and is always common but never appears in swarms. 



As regards the general Odonate fauna of De Grassi Point, 

 several points of interest may be noticed here. The ecological 

 conditions are not very varied, and the number of regular resident 

 species is consequently rather small. In all, fifty-three species 

 have' been taken, all within an area of about a square mile; but of 



