334 



A COURSE ON ZOOLOGY. 

 FIG. 295. 



METAMORPHOSES OF THE MAY-FLY. 

 FIG. 297. 



FIG. 296. 



LOUSE (Pediculus 

 capitis) (magni- 

 fied). 



HORNET ( Vespa crabro). 



the interior contains a large number of regular cells, in 

 which the eggs are deposited. Wasps take great care 



