36 A REVISION OF THE TSETSE-FLIES (GLOSSINA), &C. 
proved. 
naphthaline at all, was found to be black.” 
Tn all, 93 examples have been examined. 
Finally, a specimen of Dr. Morrison’s, which had not been exposed to 
Comparative Table of the Morphological Characters of the Superior Claspers of 
Median lobes (md in 
figs.). 
Heel or 
angle. 
Submedian 
nence, 
posterior 
promi- 
Inner lateral margin 
Upper lateral group 
of bristles. 
December 20th, 1910. 
G. submorsitans. 
With the outer (free) 
margins straight and 
parallel; sub-apical 
tubercle distinct, 
when extended. 
Usually strongly pro- 
duced distally. 
Relatively small, rarely 
extending beyond the 
heel; bristle inserted 
near the margin. 
Narrowly rounded dis- 
tally ; and consider- 
able produced. 
Relatively long. 
G. morsitans and G. submorsitans. 
G. morsitans. 
With the outer margins 
curved and converging 
distally ; apex with 
a median line or 
division ; subapical 
tubercle absent. 
Usually broadly rounded. 
Very prominent and 
usually projecting 
considerably beyond 
the heel ; bristle in- 
serted considerably 
within the margin. 
Broadly rounded dis- 
tally ; and not mar- 
kedly produced. 
Relatively short. 
