487 



Fig. 126. " Picket " caddis-worms in their square cases, 

 showing characteristic position and attachment. On wet 

 boulders along the Lamar River. Photo July 25. 



Fig. 127. Caddis-worms along the Lamar River, left stranded 

 by recession of the stream. Two types are here shown, — 

 " picket " caddis-worms {Limnephihis) and " barnacle " 

 caddis-worms. Photo Aug. 8. 



