ORTHORRHAPHA 



Nematoceka 



Bibionidae 

 Simuliidae 

 Chironomidae 



Fijf. lo. Bihio liortiilanus Vixwn. ^QXiSnim. 

 \'eiy common, resting on leaves in gardens 

 in spring. Larvae feed on hops and roots. 



Flies of this 

 (Theobald.) 



familv found as fossils. 



Fig. Ti. Siiniiliiiiii liiicrcuin Macq. 

 $ 3'5 X 8 mm. One of the " -Sand 

 flies" of Europe. The adults bite 

 viciously, and are thought to cause 

 I'ellagra. Larvae and pupae are 

 aquatic in running water. 



Figs. 12, 13. Chironomus rufipcs Vxaw. (J 8x io'5 mm., 56 x12 mm. Hedges and riversides in 

 June. Larvae aquatic, known as "blood- worms," found in rain-barrels and pools. 



