496 



THE INSECT WORLD. 



trapezium. The first segment is also horny, and of a metalhc green. 

 The eighth has a pair of tubercles with hooks, of which the larva 



Upper-side. Under-side. 



Figs. 532, 533. — Pupa of a Cicindela. 



makes use in ascending and descending its vertical hole, like a sweep 

 in a chimney. This hole (Fig. 531) is afoot or more deep. To dig it, 



Fig. 534. — Tetracha Klugii. 



Fig. 535. — Tetracha oxychiloides. 



the larva employs its mandibles and its legs in the following manner: 

 it twists itself round, loads with earth the flat surface which covers its 



