90 
BLOOD-SUCKING ARTHKOPODA. 
Fig. 6.— Pangonia magrcttii, Bezzi. $ Kassala, Sudan. 
(x 2.) 
of the wings (x 2). 
The wing markings 
are omitted. 
The enormous majority of blood-sucking Diptera belong to this 
family, in which the blood-sucking habit is universal in the female 
sex. The Tabanidse are world-wide in their distribution, and are 
among the largest of all families of Diptera. The majority of the 
species that have hitherto attracted attention by reason of their 
Fia. 8. 
Stomoxys sp., 
from Natal, 
in resting 
attitude, 
showing the 
position of 
the wings 
(X 1£.) 
Fig. 9. — Glossina 
longipennis, Corti, 
from Somaliland, in 
resting attitude, 
showing the position 
of the wings (x 1-^). 
Fig. 10 .—Lyperosia sp- <?. 
.Sokotra ( x 3). 
bloodthirsty habits belong to one or other of the four principal 
genera, Tabanus , Pangonia , Ucematopota, and Chrysops. 
