384 



UNITED' STA¥es# 



and blue. The joints of the feet are yellow, head, 

 body and legs are blue ; has a broad head, nose 

 blunt, thorax longer in proportion, abdomen conical, 

 and elegantly formed. General colour dark blue. 

 This first species make their cells of clay, and in the 

 form of a tube, three or four inches long, in the open 

 air on a rock or tree, or the inside of houses. The 

 other builds separate horizontal apartments close to 

 each other, and are smocfth on the inside, but rough 

 on the outside. Both of these species feed their young 

 on Bfiiders of every kind, which they first disable by 

 stinging them, and then carry them to their cells, 

 where they are packed close, waiting to be devoured 

 by the young worm for whose support they are des-^ 

 lined. They exercise a nice judgment in the quan* 

 tity of provisions they lay up. For additional obser- 

 vations and a plate of the insect and their cells, th6 

 reader is referred to Mr. Latrobe^s paper, froiri 

 which the above account is taken, in the Trans. 

 Amer. Phil. Soc, vol. 6, and to Mr. Bartram*s pa* 

 per in the Phil. Trans. Royal Soc. Lond. vol. 43. 



The cotton plant in South Carolina and Georgia, 

 is frequently destroyed by a caterpillar, for which 

 no remedy in those states, has as yet been found. 

 These destructive insects seldom appear, unless th6 

 precedmg spring and summer have been very moist. 

 In that case, they are almost sure to begin their 

 ravages about the beginning of August, by first de- 

 vouring the leaves, and then entering and eating 

 the tender pod. 



So rapid is their progress, and so extensive their 

 depredations, that they will destroy many acres in 



