324 JAS. J. SIMPSON—ENTOMOLOGICAL 
on my boy’s back at one time. Besides tsetse, Hippocentrum, Tabanus, Haemato- 
pota and also Hippobosca, absolutely covered my pony’s belly, and in a short time 
hundreds of these could have been caught. Needless to say, my pony developed 
trypanosomiasis ; I examined his blood daily, and on the sixth day found 
trypanosomes. Harnessed antelope, bush-cow, hartebeeste, water-buck, duiker, 
oribi and pig, are abundant.” The insects collected by Dr. Morrison during his 
stay there include Mansonioides uniformis, Tabanus taeniola, T. fasciatus, T\. 
hiquttatus croceus, T, ditaeniatus, T. par, Hippocentrum versicolor, Haemato- 
pota gracilis, H. lacessens, H. bullatifrons, Glossina submorsitans and Hippobosca 
maculata, 
The presence of these in close proximity to Zungeru more than ever emphasises 
the necessity of having an extensive clearing separating such haunts from the 
cantonment. 
(c.) Zungeru to Yelwa. 
This part of my tour was accomplished between August 30th and September 11th 
under somewhat trying conditions. It being the height of the rainy season, the 
rivers were much swollen, and many of the swamps were almost impassable. 
Rain fell persistently the whole day during four marches, and thus rendered work 
practically impossible. 
The country varies slightly in character at different parts, but the general 
altitude may be taken roughly at 1000-1300 feet above sea level. Immediately 
after one leaves Zungeru, the River Kaduna is crossed, but with this exception 
the road to Garan Gabbas, about 7 miles from Zungeru, is practically 
level and runs through thin, open bush country. Bush-fowl and guinea- 
fowl are everywhere abundant on the route, and near Garan Gabbas_ itself 
a considerable troop of large red monkeys was seen. The following blood- 
sucking insects were captured on the pony between 4 and 6 p.m. :—Hippobosca 
maculata, Stomovys nigra, S. calcitrans, Haematopota bullatifrons and Hippo- 
centrum versicolor, The first four species were abundant, but of the last only 
one specimen was seen. Heavy rain fell during the night and up to 9 a.m. The 
following day was dull and very few insects were seen. Between Garan Gabbas 
and Tegina, Hippobosca maculata, Stomoxys nigra and S, calcitrans were found 
on the pony, while at Tegina itself two Hippocentrum versicolor were captured, 
along with one Haematopota bullatifrons. This last species is a most voracious 
feeder. It darts down and immediately sets to work ; the puncture made by the 
proboscis is very large, and if the insect be disturbed while feeding, a stream of 
blood generally oozes out. A species of Simulium and a Culicoides occur at 
Tegina. The native dogs were almost covered with ticks, and the following 
species were found :—Rhipicephalus sanguineus, R. simus and Haemaphysalis 
leachi ; while one species of flea, Ctenocephalus canis, was also obtained from the 
same source. 
Before we left Tegina in the morning, one specimen of Tabanus subangustus 
was caught flying around the lamp on the table at 5 a.m, The journey from 
Tegina to Mariga was far from good at this season of the year. Practically half 
of the road was under water, and some parts were very swampy and 
