37 ° 
considered as Glossina morsitans will prove, on further examination, 
to be referable to the species herein described as Glossina 
submorsitans, n. sp.; what the exact distribution of this insect is 
remains to be seen, as at the present moment I have no further 
material available for examination. 
1 he examination of the morphological characters of the armature 
of the males of all the other known species of the genus Glossina 
has revealed the fact that there are four distinct species of that 
group of tsetse flies, of which G. fusca, Walk., may be taken as a 
type. These are G. longipennis, Corti, and G. brevipalpis, 
Newstead, from the eastern side of the continent; while G. fusca , 
and G. grossa, Bigot, are, as far as I can gather at present, the 
western representatives of this group. 
With regard to the large tsetse fly herein referred to as Bigot’s 
Glossina grossa, I had at first thought this to be a new and hitherto 
undescribed species; but, on further consideration, I came to the 
conclusion that, as it agreed so well with the author’s description,* 
it must be referable to this insect; all the more so on account of the 
statement made by Austen,t that ‘the apex of the third joint of 
the antennae is very prominent.’ Austen, who had evidently 
examined Bigot’s type, did not, however, consider this marked 
character of specific importance, and sunk Glossina grossa as a 
synonym of G. fusca, Walk. Should my examples eventually prove 
to be specifically distinct from G. grossa I would suggest the 
specific name nigrofusca. 
It may be interesting to add also, in this connection, that there 
aie no structural differences between Glossina palpalis and the var. 
wellmanni', so that for strictly medical purposes I would suggest 
that the var. wellmanni should be sunk, all the more so seeing that 
Glossina palpalis is given to great variation in size, and that there 
ate colour varieties or forms which are intermediate between typical 
palpalis and its var. wellmanni. 
I have, so far, been able to examine but one specimen of 
Glossina pallidipes, Aust. This proves to be specifically identical 
with Glossina longipalpis , Wied. The most, therefore, that one 
* f, nn ‘ S ° C - Ent Fr ‘> Vol. LX, p. 377 (, 9 oi). Female only. 
1 Monograph of Tsetse Flies, p. 97. 
