393 
L. macellaria.—^he larva of this fly is the Ameri¬ 
can £ screw worm/ infesting the nasal fossae and frontal 
sinuses of man. 
(d) Genus Auchmeromyia .— A. luteola. The larva 
is the blood-sucking floor maggot of the Congo, etc. 
Blood-Sucking Genera 
(i) Genus Haematobia. — (a) Palpi shorter than 
proboscis, partly ensheathing it. (b) Labella fleshy, 
easily visible, (c) Arista plumose dorsally ; three to 
four hairs ventrally. (b) Third and fourth long veins 
reach the apex of wing. Small mottled flies. 
Fig. 124 . Shewing the first posterior cell open at the margin of the 
wing 
(2) Genus Lyperosia. — (a) Palpi long and flat¬ 
tened, ensheathing the proboscis, (b) Arista plumose 
dorsally. (c) Wing as in Stomoxys. Differs thus from 
Glossina. These flies are common on camels. 
L. irritans.—ls the ‘ horn-fly 2 3 * 5 termed H. serrata 
in U.S.A. 
(3) Genus Beccarimyia. — (a) Palpi shorter than 
proboscis, (b) The first post-cell of the wing is closed 
before the margin. 
