38 



THE CANADIAN ENTOMOLOGIST 



I found all my specimens among the tall grass and sedge of open 

 marshes. 



Localities: Rondeau, Kent Co., Sept. 14, 18, 1899 (i male, 3 

 females); Point Pelee, Aug. 8, 1901 (i male) ; Sarnia, Aug. 16, 1901 (i 

 male). 



20. Orchelimum gladiator, Bruner. 



Or cheliinu77i gladiator, Brun., Can. Ent., XXIIL, 1891, 71. 



Measurements : Female, length of body, 21 mm.; of pronotum, 5.5 

 mm.; of hind femora, 16.8 mm.; of tegmina, 20.5 mm.; of ovipositor, 10.5 

 mm. 



I have but a single female of this insect, taken on Aug. 8, 1901, from 

 a marsh bordering a creek, just above Point Pelee. 



21. Orchelimum volantum, McNeill. 

 Orchelimum volantum, McNeill, Psyche., VL, 1891, 26. 

 Orchelimum Bruneri, Bl., Can. Ent., XXV., 1893, 92. 



This species is very abundant in Southern Ontario and varies so much 

 in size, according to locality, that I give the following measurements of 

 average specimens from the Niagara River, where they are very large, and 

 from Point Pelee, where they are much smaller : 



I first came across this species on the Niagara River, below Queen- 

 ston, where I heard its peculiar note among the rushes growing in the 

 water near the shore. I took a number of males by sweeping, but only 

 one female. McNeill has well represented this song as " Zi/, zip, 

 kr-ze-e-e, kr-ze-e-e" I have never noticed the preliminary " zip, zip." 

 The last part of the song does not last more than half to three-quarters of 

 a second, but is kept up indefinitely. 



At Point Pelee and Rondeau volantutn is abundant in open marshes, 

 bordering streams, and I came across it again at Sarnia among rushes and 

 Sagittaria growing in a small pond. 



Localities : Niagara River, Sept. 26, 1898 ; Rondeau, Kent Co., 

 Sept. 15, 1899 ; Point Pelee, Aug. 8, 1901 ; Sarnia, Aug. 14, 1901. 



(To be continued.) 



