RESEARCH I\ BRITISH WEST AFRICA. 325 



in many places the pony exti-ieated itself I'rom the mud only with ditHculty. 

 In such swamps //. versicolor is practically always found. The River Mariga is 

 crossed in canoes, but no blood-sucking flies were seen here, although two hours 

 were spent in transferring loads and carriers. Plate X. illustrates the type of 

 vegetation on the banks of the rivers in this part of the Protectorate. About 

 iialf a mile further on is Mariga, a small town of about 200 inhabitants. Ai-ound 

 the houses in the native town large pools of water were everywhere seen. These 

 contained innumerable mosquito larvae and pupae, but careful search failed to 

 reveal any imagines in the houses themselves. The larvae and pupae colleisted 

 here have not yet been identified. One Tahamis subanr/iistus was captured flying 

 around the lam]) on the table in the rest-house at 8 p.m. 



While we were encamped at Mariga, it rained heavily and persistently 

 throughout the whole night and up to about 9 a.m. The road to Bobi is very 

 similar to that between Tegina and Mariga. There are nimierous swamps and 

 running streams, and two fairly large rivers have to be crossed. One, about a 

 mile from Bobi, is very swift and deep, but not broad ; here one specimen of 

 T. suhanr/iisfH.f, was captured at noon. Three species of Haematopota were 

 caught at Bobi : H. Imllatifrons, H. lace.isens, and two specimens of a species not 

 yet described. 



The country from Bobi to Baeri is covered with moderately thick bush, but 

 towards Baeri it is hilly. The road passes through numerous swamps, but there 

 are no large rivers to be crossed. During the journey, H. buHatifrons and 

 another specimen of the new species referred to above were caught. At Baeri 

 Tahanuf; albipalpus and T. suhnngustus were secured. In the rest-house book 

 the following note, dated 17. v. 07, appears : " Tsetse-fly is found here"; but 

 none was seen during my visit on .3. ix. 10. On my horse were found several 

 A m hlyo m ma variepahtm. 



The road from Baeri to Kontagora (20 miles) is through thin bush country 

 and practically level ; four miles from Baeri, the Igberi River has to be crossed 

 by means of calabashes. No blood-sucking insects of any description were seen 

 dtn-ing this journey. 



Kontagora is a large town of over 4000 inhabitants and is the headquarters of 

 the Province of the same name. It stands about 1300 feet above sea-level, and is 

 probably the highest point between Zungern and Yelwa. Rivers to the west of 

 this point, e.r/., the Kontagora River, flow in a south-westerly direction directly 

 into the Niger, while those to the east, e.r/., the Igberi River, flow south- 

 easterly into the Kaduna, which itself is a large tributary of the Niger. The 

 Residency is situated about two miles from the native town, and the surrounding 

 district, though swampy in parts, is well cleared. The only blood-sucking fly 

 seen was Hlppobosca maculata, and this occurred in numbers around horses ; 

 numerous Rhipicephalus sir/ms were also found on these. A jigger, Dermatophihm 

 penetrans, was obtained from the foot of a native. In the hospital, however, 

 numerous flies, collected some time previously by medical officers and residents 

 in this province, were examined and the data of these ought to be recorded 

 here. From Kontagora itself, the only species were Tnbamts bignttutus crocens, 

 collected by Dr. McKinney in August, 1910, and Myzoniyiu costalis, collected 



