350 Col. Sir D. Bruce and others. TYabamde  {[Dec. 20, 
September, 1909,* in the valleys surrounding Mpumu hill, it was decided 
to make a prolonged and careful search for biting flies in these valleys. 
Boys were employed whose sole duty it was to hunt daily for these flies, 
cattle accompanying the boys to act as a bait for the flies. This more 
systematic search produced unexpected results. 
In the place of only three or four varieties of biting flies, no less than 
12 species of Tabanide, five species of Hematopota, two different Chrysops, 
a new and very handsome Rhinomyza, and Glossina palpalis, were captured 
within a 3-mile radius of the laboratory. These flies were kindly identified 
for us by Mr. E. E. Austen, F.L.S., to whom specimens were sent, and for 
whose help and courtesy the Commission is much indebted. The full list 
is here given, as it will probably be of value to future workers in the 
Mpumu laboratory, anc of interest to entomologists. 
Tabanide. 
Tabanus secedens (Walk.), very numerous. 
Tabanus fuscomarginatus (Ricardo), very numerous. 
Tabanus thoracinus (Pal. de Beauv.), very numerous. 
Tabanus par (Walk.), fairly numerous. 
Tabanus tenola (Pal. de Beauv.), fairly numerous. 
Tabanus socialis (Walk.), fairly numerous. 
Tabanus variatus (Walk.), fairly numerous. 
Tabanus fasciatus (Fabr.), sub. sp. nelotecus (Austen). 
Tabanus insignis (Lw.), scarce. 
Tabanus variabilis (Lw.), scarce. 
Tabanus obscurissimus (2), scarce. 
Tabanus wrroratus (Surcouf), rare. 
Hematopota. 
Hematopota ugande (Ricardo). H. vittata (Lw.), syn. pulchrithorax 
(Austen). H. jusca (Austen). H. brunnescens (Ricardo). HH. similis 
(Ricardo). 
(All numerous.) 
Chrysops. 
Chrysops funebris (Austen). C. silacea (Austen). 
Tlossina. 
Glossina palpalis (Rob.-Desv.). 
Lhinomyza. 
Rhinomyza perpulera (Austen). 
* ©Roy. Soc. Proc.,’ B, 1910, vol. 82, pp. 476—478. 
