96 



The Fly of CJiironomus 



ture as Cliironomus. In the gnats (fig. 68), the free ends 



of the peripheral 

 fibres turn upwards 

 (i. e. towards the free 

 end of the antenna), 

 instead of down- 

 wards as in Chiro- 

 nomus. The general 

 features are, how- 

 ever, much alike in 

 all the Nemocera 

 with enlarged second 

 joint. 



Some of the pecu- 

 liarities of the en- 

 larged joint were described by Christopher Johnston 



Fig. 68. — Enlarged second joint of antenna of 

 male fly of Atiojiheles macidipennis, showing 

 peripheral fibres. X 150. 



Fig. 69. — Vertical section of enlarged second joint of antenna 

 of male gnat {Culex sj).), showing end-organs, &c. 



(1855) from the male gnat or mosquito. He recognized 

 the auditory function of the antenna, and supposed that 



