THE LOCUSTS OF MASSACHUSETTS. 
171 
them flying far above their heads. It is to be observed, 
however, that they customarily return, and perish oil the 
very grounds which they have ravaged.” Through the kind- 
ness of the Rev. L. W. Leonard, of Dublin, New Hampshire, 
I have been favored with specimens of the destructive locusts 
which occasionally appear in that part of New England, and 
which, most probably, are of the same species as the insects 
mentioned by President Dwight. They prove to be the little 
red-legged locusts, whose ravages on our salt-marshes I have 
already recorded. 
In the summer of 1838, the vicinity of Baltimore, Mary- 
land, was infested by insects of this kind ; and I was in- 
formed by a young gentleman from that place, then a student 
in Harvard College, that they were so thick and destructive 
in the garden and grounds of his father, that the negroes 
were employed to drive them from the garden with rods ; 
and in this way they were repeatedly whipped out of the 
grounds, leaping and flying before the extended line of cas- 
tigators like a flock of fowls. Some of these insects were 
brought to me by the same gentleman, on his return to the 
University, at the end of the summer vacation, and they 
turned out to be specimens of the red-legged locusts already 
mentioned. 
It is not to be supposed that these are the only depreda- 
tory locusts in this country. Massachusetts alone produces 
a large number of species, some of which have never been 
described ; and the habits of many of them have not been 
fully investigated. The difficulty which I have met with in 
ascertaining, from mere verbal reports, or from the accounts 
that occasionally appear in our public prints, the scientific 
names of the noxious insects which are the subjects of such 
remarks, and the impossibility, without this knowledge of 
their names, of fixing upon the true culprits, has induced 
me to draw up, in this treatise, brief descriptions of all our 
locusts, as a guide to other persons in their investigations. 
All the locusts of Massachusetts that are known to me 
