18 
Insects. The total number of insects obtained (roughly counted) 
amounts to 1,527, distributed as follows : — 
Lepidoptera 
639 
Hymenoptera ... 
... 157 
Diptera (including mosquitoes) 
... 279 
Coleoptera 
92 
Orthoptera 
80 
Neuroptera 
216 
Rh ynchota ... 
64 
1,527 
Species of 
particular 
interest. 
Tsetse Fly. 
Two or three species of particular interest may be noticed. 
On August 16th, I had the good fortune to meet with a 
species of Tsetse fly, Glossina longipalpis, Wied., among mangrove 
bushes at the mouth of a river near Kissy. This species (which 
is distinct from the well-known South African form, Glossina 
morsitanSf Westw.), appears to me to be identical with that 
obtained some years ago by Dr. W. H. Crosse, at Asaba, on the 
River Niger, specimens of which, presented by Dr. Crosse, are 
contained in the Museum collection. 
Glossina longipalpis was originally discovered more than a 
century ago by Adam Afzelius, a Swedish botanist, who visited 
Free Town in 1792 and 1794, and made general collections of 
zoological and botanical specimens ; but its existence in Sierra 
Leone appears subsequently to have been overlooked. Whether 
the Tsetse fly is in anyway responsible for the reported inability 
of horses to live at Free Town, however, seems to me to be doubtful, 
since, with the exception of a few small antelope (probably a 
species of Oribia), there is no big game in the vicinity of Free 
Town ; and, as shown by Major Bruce's account of his investiga- 
tions in Zululand, before the fly can infect domestic animals with 
the disease, it must previously have obtained the parasite 
(Trypanosoma) which causes it, from the blood of some wild 
I Ingulate. Moreover, I have recently been informed, on reliable 
authority, that horses will live well enough at Freetown, if 
properly looked after. 
