species r)/ Tabani(I;e. 55 



be distinguislied by tlie narrower abdomen and by the presence 

 on the underside of four narrow white bands, wliereas in the 

 Walker species there are only two white bands; the palpi 

 are slenderer and tapering to a longer point and the wings 

 have a dark apex. From P. coiijuncta, Wlk., it may be 

 distinguished by the narrower abdomen and by the greater 

 number of white bands. 



Black. Abdomen with four white bands. Wings brownish, 

 yellow on the fore border, the iirst posterior cell closed, 

 pedunculated, with an appendix on the fork of the third 

 longitudinal vein. 



Face dull black, covered with grey tomentum, the cheeks 

 shining black, the tomentum is, however, continued to the 

 base of the eyes as a narrow yellowish border, the few hairs 

 on the face are white ; forehead covered with yellowish 

 tomentum above the antennaj, posteriorly to the vertex deep 

 black, furrowed, with some whitish pubescence which becomes 

 yellow on the vertex ; ocelli present. Antennaj and palpi 

 black, the latter long and slender, the second joint tapering 

 to a lon^ point. Beard abundant, white ; hairs round the 

 head white. Proboscis shorter than the thorax. Eyes bare. 

 Thorax black, somewhat shining, with very short yellow 

 pubescence and some grey tomentum on the sides ; scutellum 

 more densely covered with tiie yellow pubescence, the breast- 

 sides brown with dull yellowish hairs. Abdomen long and 

 rather narrow ; the first segment with some faint yellowish 

 pubescence on the posterior border; the white band on the 

 second segment entire, broader than the others, with its 

 greatest width at the sides; on the third, fourth, and fifth it 

 is entire but much narrower and the same width throughout; 

 on the sixth segment there is a narrow border of yellow 

 pubescence, and on the sides of the fifth and sixth some 

 yellow hairs ; the pubescence on the dark-coloured part of 

 the abdomen is black ; the underside is black, with four 

 narrow white bands. Legs blackish brown, some yellow 

 pubescence on the middle and posterior femora and tibiae and 

 orange hairs on the underside of the tirst joint of the posterior 

 tarsi. Wings with the yellow fore border only continuing as 

 far as the stigma and to the base of the discal cell; veins 

 yellow on fore border, elsewhere brown. 

 Length 16 mm. 



Corizoneura distincla^ $ , sp. n. 



A new species from Voi, British East Africa, U"). iv. to 

 13. V. 1)7 {C. 8. Betton), Uti. 12. 



