510 Mr. E. E. Austen on neio 



golden-yellow pile, which 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 ofl: 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 ; steruopleurse 



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 Avidth 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 band ; 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 : coxoe 



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



liair ; femora and tibi« 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, 



