BROOK LIFE. 



159 



inhabited by the black-flies, but as they are compara- 

 tively rare insects they are merely mentioned here. 



In Fig. 130 a represents 

 a larva seen from above, b 

 a larva seen from below, 

 and c a side view of the 

 pupa. 



As these are the strang- 

 est of all insect larvae they 

 should be carefully studied 

 if found. A full account of 

 their habits and transfor- 

 mations is given in our 

 Manual for the Study of Insects. They belong to 

 the order Diptera and to the family BLEPi-iAROCERiDiE 

 (Bleph-a-ro-cer'i-dee). 



Fig. 130, — Net-wing;ed midges ; a^ 

 larva, dorsal view ; b^ larva, ven- 

 tral view ; c, puparium. 



INSECTS OF BROOKSIDES. 



In the study of brook life the pupil will hardlj 

 fail to observe many insects about the shores of tht 

 streams. The presence of the greater part of them 

 in such situations is not due to the proximity of 

 water, but is largely a matter of chance. Any forest, 

 orchard, or roadside insect may be found near a 

 brook if its proper food occurs there. Some of these 



insects are described in subsequent chapters. 



Here mention is made of a few of those that 



prefer the vicinity of water and are rarely 



found elsewhere. 



The SnO'KE-BTJG?, {Field and School Work). 

 — These abound in the vicinity of streams and lakes 

 and upon damp soils. They are small bugs, of dark 

 colors with white or yellow markings, and with long 



Fig. 131. 



