1:2 



HALF-HOURS IN THE GREEN LANES. 



arranges them in a transverse and oblique direction, 

 so as to form quite bulky masses. Another corn- 

 Fig. 26. mon species (L. flavicornis) is not 

 at all particular as to what materials 

 it uses in forming its cases, as the 

 following sketches will show. Shells 

 are employed very abundantly, and 

 most of the caddis-worm cases to be met with in 



Fig. 27. 



Fig. 28. 



Fig. 29. 



Fig. 30. 



Fig. 31. 



Fig. 32. 



Cases of Limnephilus flavicornis. 



any ditch or tarn, are the work of this particular 

 species. Indeed, the flavicornis seems to be ex- 

 ceedingly capricious in its selection of building 

 materials. At one time it will choose only seeds, at 



