128 THE CANADIAN NATURALIST. [Vol. VliL 



The following is a summary of the more important items 

 of information for the summer of 1874, the localities being 

 arranged in order from west to east: — 



Battle River and Red Deer River, North West Territory. — 

 (W. McKay, from reports of H. B. Company's officers) A tract 

 of country extending sixty miles north and south, and fifty miles 

 east and west between Battle River and Bed Deer Biver. Grass- 

 hoppers produced from the egg about the beginning of June. 

 Left about the end of July, going southward from the Battle 

 Biver. 



Fort Pitt, North West Territory. — (W. McKay). Did not 

 appear within 140 miles of this place. 



Observations in the vicinity of Wood Mt. and Westward. — 

 On the 7th, 8th, 9th, and 10th of July, I noticed grasshoppers in 

 great abundance on the high plateau of Wood Mt. (long. 106° 

 30') and its vicinity. They were migrating eastwards with the 

 prevailing winds during the warm hours of the day, and flying at 

 a great height. On the 12th they were met with in vast num- 

 bers covering the country to the west of White Mud Biver 

 (long. 107° 35'.) 



Swarms were also observed by other members of the Boundary 

 Commission parties, on the 9th, 10th and 11th of July, at 

 numerous points between long. 108° and 109° 30', the last named 

 meridian being about the western limit of the main horde at this 

 time. Their general direction of travel was eastward, with the 

 wind. On July 11th, their course is stated at several localities 

 to have been south-east. 



It would thus appear that on July 9th to 11th, the width 

 of the belt of grasshopper-covered country was about 150 

 miles on the forty-ninth parrallel, stretching from beyond the 

 West Fork of Milk Biver nearly to Wood Mountain. 



Carleton Rouse, North West Territory. — (L. Clarke.) Pro- 

 duced from the egg in 1874 almost immediately after the disap- 

 pearance of the snow, early in May. When full grown took 

 flight southward. Foreign swarms appeared in the beginning of 

 September and stayed all the autumn. No crops put in here. 



Mr. Clarke writes : — East of this there is a settlement called 

 Prince Albert, about fifty miles distant. Between us and this 

 place there is a tract of sandy soil covered with a forest of fir. 



