390 ATTEMPTED DIVISION OF BRITISH INSECTS. 



corresponding apparently with the apical seta of the Muscina ; 

 labium 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. Tabanus, Hcematopota, Chrysops. 



Natural Order. — Anthracites. 



Larva and pupa unknown. Imago, with the antennae composed 

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

 bular, and the remaining five frequently united ii;ito one ; labium 

 large, fleshy, bilobed, and rather porrected ; the other organs less 

 perfect than in the Tahanites ; ocelli three ; wings somewhat 

 divaricating, long, extending beyond the body, beautifully varie- 

 gated with black or brown ; alulae small ; body flattened, truncate 

 at the extremity. Inhabits the borders of woods, heaths, &c. 

 settling, on flowers, on the farina of which it probably feeds. 

 Anthrax, Stygia. 



Natural Order. — Stomoxites. 

 Larva and pupa unknown. Imago, with the antennas 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 ; labium 

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

 divaricate ; alulse 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 quadrupeds ; particu- 

 larly annoys horses, piercing its porrected labium through their 

 skin ; and, seeking shelter in the dwellings of man as winter 

 approaches, draws his blood even through a worsted stocking. 

 Stomoxys, Bucentes. 



Natural Order. — Conopites. 

 Larva elongate ; feeds on the bodies of humble bees. Pupa changes 

 in the same situations. Imago, with antennae placed on a 

 distinct pedicle, six-jointed ; basal joint long, second and third 

 long and incrassated, the remaining ones short and decreasing to 

 a point ; labium long, porrected ; wing narrow, divaricating ; 

 alulse obsolete ; body elongate, narrow, recurved. Inhabits 

 woods, feeding on composite flowers, and occasionally, it is said, 

 sucking the blood o cattle. Conops. Myopa, and Zodion differ 

 essentially in the antenna; and aluliv, but perhaps belong to this 

 order. 



