CLASSIFICATION OF INSECTS. 183 



Jong. Bolitophila, Macrocera, Synapha, Myce- 

 tohia, Platyura, Sciophila, Leia, Mycetophila, 

 Molobrus, Lestrema, Zygoneura. 



6G3. Rhyphites (Rhyphites). Larva very elon- 

 gate, smooth, cylindrical, encompassed by eleven 

 corneous shining rings ; head furnished with two 

 hooks ; tail with four short cylindrical tubes : 

 inhabits the earth and cow-dung. Pupa changes 

 in the earth. Imago with filiform, sixteen- 

 jointed, antennae, rather longer than the head ; 

 ocelli three; maxillary feelers four -jointed ; 

 ligula distinctly bilobed, other parts of the 

 mouth not fully developed ; wings broad, lying 

 horizontally on the body, which they much exceed 

 in length. Rhyplms. 



664, Bibionites {Bibionites). Larva elongate, 

 attenuated at each extremity ; divisions of the 

 segments deeply marked, and fringed with hairs ; 

 head furnished with two obtuse hooks : inhabits 

 earth, on which it appears to feed. Pupa changes 

 in the earth. Imago with short, nine-jointed, 

 antennae ; maxillary feelers four or five-jointed ;. 

 ligula pubescent and bilobed, the other parts of 

 the mouth obsolete ; head and eyes large in the 

 male, small in the female ; ocelli three. In the 

 spring and autumn every lane and meadow 

 swarms with these insects, either sailing in the 

 air like balloons, or settled on vegetables. Bibio, 

 Dilophus, 



665. Scatopsites {Scatopsites). Larva and 



