340 



PHYLUM ARTHROPODA. 



Appendages. Insects feel their way, test food, and 

 apparently communicate impressions to one another, by 

 means of the antennae. Then follow the mandibles, first 



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1*1 



& >, 



m g 

 6.2 



w 



I 



I 



r 



maxillae, and second maxillae, on the head ; the three pairs 

 of legs on the thorax; and sometimes vestiges of legs on 

 the abdomen. 



