﻿164 JAS. J. SIMPSON — ENTOMOLOGICAL 



The insect fauna of Yaba, about five miles from Lagos and close to the 

 railway, is better known than that of any other part of the Colony, owing to 

 the fact that the Medical Research Institute is erected there. Not long ago 

 Dr. W. M. Graham, assisted by Dr. A. Connal, made exhaustive collections of 

 mosquito larvae, an account of which was published in this Bulletin" by Mr. W. 

 Wesche. Since that time numerous other species, both imagines and larvae, have 

 been received and the complete list is as follows : — Toxorhynchites brevipalpis, 

 Culcx consimilis, C. pruina, C. guiarti, C. graliami, C quasigelidus, C. duttoni, 

 C. tigripes vsly./uscus, C. decens, C. invidiosus, C.thalassius, C.rima, Culiciomyia 

 nebulosa, Ochlerotatus caliginosus, O. longipalpis, 0. irritans, O. domesticus, 

 O. punctotltoracis, O. nigricephalus, O. marshalli, Stegomyia africana, S. apicoar- 

 gentea, S. fasciata, S. luteocephala, Aedomyia catasticta, Banhsinella luteolateralis, 

 Taeniorhynchus aurites, T. annetti, T. violaceus, Myzorhynchus umbrosus, 

 M. mauritianus, Myzomyia costalis, Ny ssorhynchus pharoensis, Mansonioides 

 uniformis, Eretmopodites inornatus, Mimomyia mimomyiaformis, Uranotaenia 

 balfouri, U. coeruleocephala, U. annulata, Ingramia nigra and /. uniformis. 



Collections from this locality have also been received from Drs. A. Connal and 

 W. H. Sieger, and from these and the species collected by the writer the following 

 list of blood-sucking insects, other than mosquitos, has been prepared : — 



DlPTEEA : — Tabanus billingtoni, T. ditaeniatus, T. fasciatus, T. ruficrus, 

 T. laverani, T. par, T. pluto, T. secedens, T. subangustus, T. taeniola, T. 

 thoracinus, Chrysops longicornis and Hippocentrum versicolor ; Glossina fusca (a 

 single specimen caught by the writer on April 20th, 1910), Stomoxys calcitrans, 

 S. nigra, and S. omega ; Hippobosca maculata on cattle ; Nycteribia sp. on bats. 



Siphon aptera : — Ctenocephalus canis from dogs. 



Ixodoidea : — Amblyomma variegation and lihipiccphalus sanguineus on dogs. 



(14) Lagos Railway. 



The following records from construction camps and stations on the Railway 

 are also worthy of note. At Agege, the source of the new water-supply for the 

 town of Lagos, twelve miles from Iddo, the railway terminus, Glossina fusca, 

 Stomoxys nigra, Tabanus taeniola and T. pluto have been caught, while between 

 this point and Aro, sixty miles from Lagos, Hippocentrum versicolor was obtained 

 in a railway-carriage at Owowo, and also at a camp 2\ miles from Aro. From 

 Opelifa Dr. G. M. Gray records Tabanus fasciatus, T. taeniola and Hippobosca 

 maculata, as well as the following ticks from horses : — Amblyomma variegatum, 

 Boophilus decoloratus and Bhipicephalus sanguineus. At Opeji, Dermatophilus 

 penetrans was found, while from the eighty-five mile camp Stomoxys nigra has 

 been recorded. At Olokemeji, the headquarters of the Forestry Department, 

 about midway between Aro and Ibadan, the only blood-sucking insects recorded 

 are Tabanus taeniola and T. socialis. During my visit there, however, I saw 

 several tsetse, and, though I was unable to obtain any, am of opinion that they 

 were Glossina longipalpis. 



* Bull. Ent. Res. I, pt. i, pp. 7-50 (1910). 



