DIPTERA. 221 



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 ; wings divaricating, 

 as long as the body ; alulce large ; body flat ; colour gri- 

 seous : male feeds on the pollen of flowers ; females suck 

 the blood of man and quadrupeds. Tabanus, represented 

 at page 216, Haematopota, Chrysops. 



Painted winged flies or Anthracites. Larva parasitical 

 on some species of bees, slightly elongate ; head corneous, 

 and furnished with two hooks. Pupa changes in the nest 

 of the bee ; has the back much arched ; the head corneous, 

 and armed with spines. Imago with the antennae composed 

 of seven joints ; the basal joint long and stout, the second 

 globular, and the remaining five frequently united into 

 one ; ligula large, fleshy, bilobed, and rather porrected ; 

 ocelli three ; wings somewhat divaricating, long, extending 

 beyond the body, beautifully variegated with black or brown ; 

 alulae small ; body flattened, truncate at the extremity. In- 

 habits the borders of woods and heaths, settling on flowers. 

 Anthrax, Stygia. 



Piercing flies or Stomoxites. Larva and pupa unknown. 

 Imago with the antenna six-jointed, the basal and second 

 joints short, the third produced inferiorly, pendulous, and 

 received into a cavity in front of the head ; the remaining 

 joints forming a seta which is often plumose ; ligula very 

 elongate, and porrected in front of the head ; wings slightly 

 divaricate ; alulae very large ; body stout ; colour griseous 

 or mottled. Inhabits woods, meadows, houses, &c., feeding 

 on the pollen of flowers, and the blood of man and quad- 

 rupeds. Stomoxys, Bucentes. 



Wasp flies or Conopites. Larva elongate ; feeds in the 

 bodies of humble bees. Pupa changes in the same situ- 

 ations. Imago with antennae placed on a distinct pedicle, 



