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THE CANADIAN ENTOMOLOGIST. 



ON SOME OF OUR COMMON INSECTS. 

 THE HELLGRAMMITE FLY—Corydalis cornutus Linn. 



BY THE EDITOR. 



This insect is common throughout Ontario, and wherever found, either 



in its larval or perfect state, excites astonishment and curiosity, owing to 



Fif. 9. 



Colors — («) dark brown, (b) whitish, (c) and (d) light brown. 



its immense size and formidable appearance ; it is not, however, in any- 

 way poisonous, as some imagine. In fig. 9 this insect is represented in 



