African Phhbotomic Diptera. 3">5 



times darl<er, third joint dark brown, lighter at extreme base. 

 Thorax : dorsum sparsely clothed with minute and deciduous 

 yellowish hairs, in front with traces of a pair of widely 

 separated greyish longitudinal stripes, not extending beyond 

 transvei'se suture. Abdomen : dorsum sparsely clothed with 

 minute, appressed, dark brown hairs_, and with similar pale 

 yellow hairs on hind borders and posterior angles of second, 

 third, and fourth segments ; grey hind boixlers of second 

 to fourth segments inclusive more or less expanded on 

 sides ; venter shining clove-brown, extreme hind margins of 

 second and following segments cream-coloured, vential 

 surface of second segment sparsely clothed with minute 

 appressed pale yellow hairs, that of folloAving segments clothed 

 with dark brown or blackish hairs. fVinc/s : dark brc^wn, 

 except extreme base and costal cells, which are ochre-yellow, 

 a large hyaline area, which includes both basal and bases 

 of first submarginal, first posterior, and discal cells, a second 

 hyaline area, including alula and anal angle, though rudiment 

 of seventh longitudinal or axillary vein is usually marked by 

 a brownish streak, a broad milky streak extending diagonally 

 backwards from costa just beyond stigma and either termi- 

 natiug in distal extremity of discal cell or else just reaching 

 fourth posterior cell, and a large triangular, quadrate, or 

 ovoid milky spot, situate on hind margin in fifth posterior 

 cell, and looking like a continuation of the diagonal streak ; 

 dark brown area thus includes distal third, with its proximal 

 margin oblique, a blotch occupying distal half of axillary 

 cell, whole of anal cell except extreme base, and rather more 

 than basal half of fifth posterior cell, and fusing with apical 

 blotch in fourth posterior cell ; there is also a broad dark 

 brown streak, which runs obliquely downwards from lower 

 margin of stigma, crosses discal cell, and becomes merged 

 with the larger brown area in the fourth posterior cell ; 

 stigma elongate, ochre-yellow at its proximal, dark brown at 

 its distal extremity. Halteres : stalk cream-bufF, knob 

 cream-coloured. Legs : front coxte clove-brown, grevish 

 pollinose; front and middle femora dark brown, front fernora 

 sometimes paler (raummy-brown), hind femora clove-brown* 

 front tibia; slightly expanded towards ti|)s, but not really 

 incrassate, hind tibiae not incrassate ; tips of front tibiae dark 

 brown or front tibire except base sometimes wholly brown, 

 middle tibise wholly buff, hind tibiie brown or brownish on 

 inner side, or more or less brown except at base ; front tarsi 

 dark brown, middle and hind tarsi brown, with first joint, 

 excc[)t tip, and bases of two following joints buff or creani- 

 butf. 



