44 H. T. BARRETT—DIARY NOTES ON THE TSETSE-FLIES OBSERVED DURING 
August 27th. On Rovuma banks (11). Flies fairly plentiful in open country, 
with short grass interspersed with palms and stumpy trees, generally leafless. 
They were found in mid-stream where water was 4 mile wide, but may have 
accompanied us from banks. They also appear to like reeds. [ew are seen 
when weather is dull. 
August 29th. Lisanyando stream (12). Flies plentiful in river bed and on the 
stones in the pools. 
August 30th, One fly caught in tent and blood slide taken from it (13). Day 
fine ; country moderately thick. Game plentiful—mostly waterbuck. 
August 30th. Between Lisanyando and Rovuma falls (14). Day fine. Fly 
numerous. Medium country ; the grass burnt in parts. Fly began to feed 
as soon as sun was up. 
August 31st. Caught some flies in villages near the river (15). Ordinary bush 
country. 
September 2nd. On bank of Rovuma (16). Flies caught at camp, in deep 
shade. 
September 3rd. Caught some flies in village gardens at the camp, 300 yards 
from river and 50 yards from bank of small stream (17). Bright day. Fairly 
thick country around. Fly plentiful; seem to bite most about 4 p.m., 
providing weather is fine. 
September 5th. Caught no fly, though they are present in vicinity of camp (on 
Chipindimbi stream) in limited numbers. Eland country ; no buffalo. 
September 6th and 7th. Flies were caught between Chipindimbi stream and 
Matondowera Hills (18). Sable and eland present in limited numbers, no 
buffalo. A specimen was caught in camp at 6.30 p.m., on the bank of 
Chualezi stream (near Matondowera Hills), forty-five minutes after sundown 
—quite dark, No game at, or anywhere near, camp (in village). 
September 8th. Between Matondowera Hills and camp in marsh (19). Fly 
plentiful ; they bite in this locality after sundown. 
September 9th. Fly caught in bed of Mtapiri (20). They were plentiful 
throughout the trek. 
September 10th to 12th. Flies were taken along Lujenda river near the Mtapiri 
confluence (21); and again at camp of 12th September, on bank of Lujenda, 
8 miles N.E. of Mtapiri. Buffalo and elephant present. Fly fairly 
plentiful. Dense country. 
September 13th. Near Lujenda river (22). Fly still present. 
September 14th. Likwamba stream. Saw no fly, though probably existent ; 
but weather very dull. Elephant and sable country. 
September 15th to 18th. Fly in’ quantities among trees and in marshes. 
Vicious biters, though unobtrusive, and fill themselves with bleod before 
being noticed. Feed by day and night. One specimen caught at 8.30 p.m, 
on 18th September ; one other killed at midnight on 17th. Camp on marshy 
ground, fairly clear of trees (23). Nocturnal habits of flies may be accounted 
for by fullness of moon. 
September 20th. Fly existent all the way (24). The fly here are difterent from 
those met with on the first part of the trek, as here they crawl inside the 
clothes. 
