380 



UNITED STATES. 



late Hon. I. Havens of Long Island, inserted in the 

 1st vol. of the Transactions of the Agricultural So- 

 ciety of New York^ the maggot of the fly genei^ally 

 proves more destructive to wheat in the autumn of 

 the year than in the spring ; and before cold weather 

 it is transformed into a chrysalis, in which state it is 

 prepared to remain during the winter, and in the 

 spring will again be transformed into a fly, which, 

 completes two generations of the insect in one 

 year. 



An instructive memoir by Dr. Barton, upon va- 

 rious destructive insects, obtained the Magellanic 

 premium last year from the Phil. Soc. of Philadel- 

 phia, and will probably be published. The following 

 are the names of the principal insects of which he 

 has given an account in the memoir alluded to. 



1. A species of Ci7nex, which proves very destruc- 

 tive to the wheat, the Indian corn, and other import- 

 ant vegetables, in Virginia, and other parts of the 

 United States. 



2. A species of Fhal^enaj which destroys the In- 

 dian corn in various stages of its growth. This is 

 called the " Bud worm," 8cc. 



3. A species of PhaLtna^ which is called PhaUna 

 migratoria. The larva of this, known by the name 

 of the " grass caterpillar," See. proves very destruc- 

 tive todifl'erent species of gramina^ or grasses, while 

 in their growing state, not neglecting the Indian 

 corn.* 



[* This species did immense mischief in Maryland, Virginia^ and 

 S^em county. New Jersey, during the summer of 1806.] 



