92 ZOOLOGICAL EESULTS OF THE EUWENZORI EXPEDITION-. 



brown or black, second, third, and fourth abdominal segments, in middle line above, 

 each with a conspicuous, black, rounded tubercle (that on second segment most 

 prominent), shining in centre but dull black on margin in specimens in good condition ; 

 wings with a light brownish tinge, and with a narrow and somewhat oblique dark brown 

 band, extending from costa, at distal extremity of mediastinal vein, to upper distal 

 angle of second basal cell. 



Head black, covered with yellowish pollen, and clothed with short hair ranging in 

 colour from straw-yellow to light buff-yellow ; front in ? broad, an area on vertical 

 region surrounding ocelli, and sometimes extending forwards to middle, covered with 

 dark brown pollen and clothed with dark brown or black hair ; face with narrow 

 shining black tubercle in middle line below depression beneath antenncB, which are 

 clove-brown, second joint sometimes lighter (chestnut) ; arista ochraceous-buff, clothed 

 on basal half with short hairs, distal extremity bare. Tliorax : dorsum, including 

 scutellum, thickly clothed with short tawny or raw-sienna-coloured hair, often forming 

 a conspicuous tuft in front of base of wing on each side ; scutellum with a dull 

 cinnamon-rufous tinge, with an ill-defined darker transverse band near front margin. 

 Abdomen clothed with short maize-yellow hair (straw-yellow on first segment, which is 

 shining black) ; second segment dull cinnamon-rufous, with abroad subtriangular black 

 mark resting on hind margin, with its apex, which does not always reach front margin, 

 including the median tubercle, and its sides curving outwards to meet the sides of the 

 segment about halfway between the front and hind margins ; third and fourth segments 

 mainly black, but a dull cinnamon-rufous transverse mark, with its posterior margin 

 concave, usually visible next front margin of each segment on either side of middle 

 line ; these marks may be indistinguishable on fourth segment, hind border of which 

 is sometimes cinnamon-rufous. Wings : extreme base dark brown ; alulce brownish at 

 base ; in certain specimens bend of third longitudinal vein into first posterior cell has 

 a small appendix beneath. Squamai dark sepia, fringes brownish. Legs : all tarsi 

 ochraceous or ochraceous-rufous ; femora more or less black (buff or ochraceous-buff at 

 extreme tips, more or less ochraceous or ochraceous-rufous at base), middle femora 

 sometimes largely ochraceous, usual patch of closely-set, minute, black bristles clearly 

 visible at base of each femur on under side, hind femora somewhat swollen ; front 

 tibiae cream-buff at base, which is clothed with silvery or pale yellowish hair, darker on 

 distal half or two-thirds, where the hair is black on the outer and brown or ochraceous 

 on the inner side ; middle tibiae cream-buff or cream-coloured at base, ochraceous-buff 

 or even sometimes darker towards distal extremities, clothed (at least at base) with 

 silvery or yellowish-silvery hair, which towards distal extremity usually passes into 

 bright orange-ochraceous hair ; hind tibiae black or dark brown, cream-buff at extreme 

 base and ochraceous or ochraceous-rufous at distal extremity, clothed on outer side at 

 base with silvery, and elsewhere on outer side and on posterior surface with bright 

 ochre-yellow or orange-ochraceous hair, and fringed on inner margin, except at 

 extremities, with long black hair. 



