G30 



THE MICROSCOPE. 



the Flea (fig. 287) is a horny ease, divided into distinct 

 segments ; those upon the thorax being always disunited. 

 Although apterous, the Flea has the rudiments of four 



Fig. 2S7 



', Female Flea. 2 Male Flea. (Th- s , Tia l) circles enclose fleas the actaaJ or 



life size.,/ 



