16 ROBERT NEWSTEAD—A REVISION OF THE TSETSE-FLIES (GLOSSINA), 
number of long bristles. The inferior claspers (7c) are large; the distal margin 
is concave, the proximal margin deeply emarginate, hairs long and numerous ; 
the harpes (4) have the larger process strongly serrated along the upper edge and 
ARE CE | 
IEC ME SC GE De LLLE- 
an’ = 
Fig. 3.—Male armature of Glossina fusca, Walk. ; lateral view. 
posteriorly to this is a long narrow process : immediately in front of the serrated 
organ are two additional narrow falciform sclerites, each with the tips curving 
inwards so that a calliper-like process is formed. Vesica (~) somewhat cylindrical, 
Fig. 4.—Superior claspers of Glossina fusca, Walk. 3 ; ventral view, 
