423 



THE INSECT WORLD. 



plant-lice. They attack also caterpillars. Their mandibles are pro- 

 vided with a canal for suction, like those of the foregoing species. 

 The insects of the genus Osmylus (Fig. 409) are rather rare; but 



Fig. 408.' Nemoptera Coa. 



Fif. 409. -Osmylus maculatus. 



may be found in the shrubs which border ponds. They also belong 

 to the Hemerobida. Their larvae live in wet ground. 



The Panorpata constitute a singular little family, having a 

 peculiar shaped head, which is prolonged to a sort of long and 



Fig. 410. Panorpa, male and female. 



slender beak. Aristotle called them Scorpion Flies, and thought 

 they were winged scorpions. The Panorpas, properly so called 

 (Fig. 410), are found on hedges and plants during the summer. 



