28 ROBERT NEWSTEAD—A REVISION OF THE TSETSE-FLIES (GLOSSINA), 
slightly longer than the longest on the opposite side of the clasper. The con- 
necting membrane (cm) deeply divided and spinose on both sides. Harpes some- 
what S-shaped, the distal portion being much broader and flatter than the 
proximal, Juxta (/) very similar to that in G. palpalis and G. tachinoides. 
Inferior claspers (#¢) with a number of bristles on the broad basal portion, their 
apices somewhat falciform, being curved outwards and apparently bluntly pointed ; 
but their true morphological character cannot be exactly ascertained as the 
terminal portion presents an oblique view in the only specimen examined ; they 
are however specifically distinct from the corresponding organs in the other 
known species of tsetse-flies. Hditum (¢) with the longest bristles reaching 
almost to the proximal portion of the superior claspers. 
Fig. 13.—Male armature of Glossina pallicera, Bigot ; ventral view. 
I have been able to examine but a single example of the male armature of 
this insect, so that it is just possible that other characters may in future be 
discovered. One cannot be at all certain for instance as to whether the outer 
half of the distal extremity of the claspers will invariably present the suddenly 
truncate or broken appearance as exists in the specimen described ; it is obvious, 
however, that the inner half of the apical margin is perfect and intact, as the 
presence of the spines amply testifies. 
The distinctive morphological features are: the great width of the claspers 
proximally and the presence of the short spines on the distal margin ; the curious 
and somewhat falciform shape of the inferior eclaspers and the striking form of 
the harpes. 
