428 



THE INSECT WORT.D. 



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. 



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

 to the Hemerobiidce. Their larvae live in wet ground. 



The Pa7iorpatcE, 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 . Panorpce^ properly so called 

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



