42 PLATE XVIIi. 



June, and thence to September or later ; they are voraclousj and feed 

 on other aquatic animals, grafping their prey between their fore feet^ 

 and tearing them to pieces with their fliarp roPcrum. — They fly in the 

 evening, and thus remove in herds from one pool to another when 

 danger approaches. 



It IS fuppofed by fome authors, that the fore feet of the nepa are the 

 antennae, and if this be admitted, the InfesSl hath only four feet j but 

 if confidered deftitute of its antennae, it hath fix. 



