PLATE XV. 



FIG. i. FIG. 2. 



THE TRICOPTERA OR CADDIS-FLY IN ITS LARVAL AND PUPAL CONDITIONS 



FIG. i. The Larva of Phryganea (Sedge-Fly), five times natural size. This larva spins 

 a cylindrical tube, and when it reaches maturity closes the end and enters its pupal 

 existence (see page 80). 



FIG. 2. The Pupa of the same Fly, ready to tear open its pupal envelope and to 

 enter its imago or perfected flying existence. 



Copyright.] 



TO FACE PAGE 80. 



