African PJilehotomic Diptera, 97 



Haematopota masseyi, sp. n. 



? . — Length (1 specimen) 8*5 mm. ; width of head 

 2'5 mm. ; width of front at vertex 1 mm. ; length of wing 

 8-2 mm. 



Grey ; dorsum of thorax French grey, ivith four olive- 

 coloured longitudinal stripes ; abdomen yellowish grey, dorsum 

 loith a pair of quadrate dark brown blotches on each segment 

 commencing with second, partly obsolete on fourth segment and 

 almost obsolete on subsequent segments, venter with a very 

 broad dark brown longitudinal stripe extending from base to 

 tip / frontal callus shining black ; wings hyaline, except costal 

 cells and a light brown border, which contains light markings 

 and, commencing on cost a about 1 mm. before end of second 

 vei?i, includes tip and extends nearly to anal angle ; legs dark 

 brown, under side of hind fernor a pearl-grey, front tibia hardly 

 incrassate, ivith a very indistinct lighter band near base, middle 

 and hind tibice each with two more or less inconspicuous 

 reddish-brown bands. 



Head : front, except vertex, silvery grey when viewed 

 from above, face and jowls yellowish grey, a clove-brown 

 elongate fleck on each side of face, running from lower inner 

 angle of eye to antenna ; frontal callus of moderate depth, 

 extending from eye to eye, its upper margin straight in 

 middle, then curving downwards on each side, lower margin 

 with a wide median indentation ; a narrow clove-brown 

 median fleck below callus reaching to level of antennae ; 

 lateral frontal spots large, clove-brown, subtriangular, not in 

 contact with eyes, median frontal spot absent in typical 

 specimen ; />rt/jyi mouse-grey, terminal joint elongate, clothed 

 with short yellowish hairs intermixed with some blackish 

 ones ; tirst and second joints of antennm mouse-grey, third 

 joint wanting, first joint short, not incrassate, sparsely clothed 

 above with yellowish hairs. Thorax : dorsum sparsely clothed 

 with short yellowish hairs, inner pair of stripes terminating 

 beyond transverse suture at about one-third of distance 

 between latter and hind margin ; a narrow stripe above base 

 of each wing and a spot at bottom of mesopleur^ olive- 

 coloured; scutellum ^xv^\iQ)\VL^ grey, without spots. Abdomen 

 clothed with short ap pressed yellowish hairs ; dark brown 

 blotches on dorsum not extending to hind margins of seg- 

 ments. Wings : both basal cells, marginal cell to a distance 

 of nearly 1-2 mm. beyond distal extremity of stigma, basal 

 half of anal cell, and anal angle hyaline ; first submarginal 

 cell as far as fork of third vein, first posterior cell to about 

 Ann. & M(ig. N. Hist. 8er. 8. ]'oI. ii. 7 



