186 GRAMMAR OF ENTOMOLOGY. 



composed of seven joints ; the basal and second 

 joint short; the apical portion long, linear, and 

 consisting of five united joints, of which the ter- 

 minal one is acute ; ligula, very long, rigid, and 

 porrected like a horn ; ocelli three ; wings widely 

 divaricating, narrow, variegated ; alulse small ; 

 legs long, slender; body short, globose, very 

 hairy. Inhabits lanes and woods, hovering over 

 flowers, &c. Bomhylius. 



671. Gad-flies (raianto.) Larva inhabits the 

 earth ; is elongate, cylindrical ; head corneous, 

 linear, elongate, and furnished with two hooks. 

 Pupa changes in the earth; has two tubercles 

 anteriorly, and six sharp points near the posterior 

 extremity. Imago with antennae composed of 

 seven joints, the basal joint long and rather stout, 

 the second minute, the remaining five of various 

 dimensions and sizes, differing in the different 

 genera ; ligula large, bilobed, porrected ; and the 

 other organs of the mouth very perfectly developed ; 

 ocelli none ; wing divaricating, as long as the body ; 

 alulae large ; body flat; colour griseous : male feeds 

 on the farina of flowers ; females suck the blood 

 of man and quadrupeds. Tahanus, Hcematopota, 

 Chrysops. 



672. Painted winged flies {Anthracites). Larva 

 and pupa unknown. Imago with the antennss 

 composed of seven joints ; the basal joint long 

 and stout, the second globular, and the remaining 

 five frequently united into one; ligula large, 



