510 Mr. E. E. Austen on new 



golden-yellow pile, wliich is thicker and longer on the sides ; 

 the dorsum exhibits three well-defined blackish-brown 

 stripes, the median stripe being separated from the others 

 by a pair of dull ochraceous stripes, which meet together in 

 front and taper off posteriorly, where each is continuous 

 with a broad, lateral, light yellow stripe ; the median 

 blackish-brown stripe tapers off in front and extends to the 

 hind, margin; the adlateral blackish-brown stripes, which 

 are broader behind the transverse suture, are rounded off in 

 front and behind and do not reach the hind margin; pleurae 

 marked with a broad, curving, yellow pollinose stripe, thickly 

 clothed with golden-yellow pile, commencing below the 

 humeral callosity, encircling the upper part of the meso- 

 pleura, and extending to the metapleura ; sternopleurse 

 yellowish pollinose, golden yellow behind, where they are 

 clothed with similarly coloured hair ; area between front 

 coxse also clothed with golden-yellow pollen and hair. 

 Abdomen clothed above and below with minute orange- 

 ochraceous hairs ; the black stripes, which commence on 

 hinder half of first segment, vary greatly in width in 

 different specimens, and are often somewhat irregular in 

 outline ; they are sometimes interrupted on hind margin of 

 first segment, and may terminate before reaching hind 

 margin of second, to reappear as basal spots on the third 

 segment ; lateral margin of second, and sometimes of third 

 and fourth segments as well, narrowly edged with dark 

 brown or black ; venter unicolorous, a small median black 

 streak occasionally present on the second and third segments. 

 Wings : costal cells ochre-yellow ; stigma ochraceous ; 

 whole of apical portion, from a point on costa above fork of 

 third vein to tip of anal cell, suffused with brown, including 

 the whole of the fifth posterior cell, but not the bases of the 

 second, third, and fourth posterior cells ; there is thus a 

 paler, buff-coloured area between the apical blotch and the 

 remains of the transverse baud ; the latter includes the tips 

 of the first and second basal cells and the basal third of the 

 discal cell ; lower portion of second basal cell usually with a 

 slight yellowish tinge. Halteres dark brown. Legs : coxae 

 dark brown (front pair paler), clothed with golden-yellow 

 hair ; femora and tibiae clothed with minute orange-ochra- 

 ceous hairs ; front tibiae somewhat incrassated, their distal 

 portion brownish. 



Congo Free State ; Southern and Northern Nigeria. 

 Type and four other specimens from the Congo Free State 

 (Kimwenza, 28. iii. 1904 ; Yakusu, 15. ix. 1904 ; Kimwosa, 



