NEUROPTERA. 429 
in considerable troops—are representatives. The latter has lately 
been discovered in England, 

Fig. 412.—Bittacus tipularis, Fig. 413,—Boreus hyemalis (magnified and natural size). 
The Phryganide, or Caddis-flies, are known by their larvae, of 
which anglers make great use. Réaumur classed them as aquatic 
moths. Their soft and delicate body is protected by a case, to 


Fig, 415,—Phryganea rhombica, 
in repose. 














re 
SSS 
ae 












Fig. 414.—Larva of Phryganea rhombica. Fig. 416.—Phryganea rliombica. 
which they cling by two hooks, placed at the extremity of their 
abdomen. They are called by different names in allusion to their 

