II 



FLIES WITH AQUATIC LARVAE 



153 



the red colour. In one case no fewer than seven 

 heads of Chironomus larvae were found in a single 



Fig. 45. — Larva nnd pupa of Tanypus maculatus. The four lower figures represent 

 the circular gelatinous egg-mass ; a developing egg, in side-view ; the tail plates 

 of the pupa, front view ; and the partly united, hook-bearing, prothoracic feet 

 of the larva. 



Tanypus. Crustacea (sometimes still . alive) arc 

 often to be seen in the crop. The head is narrow, 



