African I'hk'hotomiG Diptera. 115 



mark in tlie axillary cell are not connected by a light bar 

 runuing j)arallel to the margin of the anal angle. 



HcEmatopota nociva, sp. n. 



? . — Length (2 specimens) 8*4 to 8"8 mm. ; width of head 

 2'8 mm, ; width of front at vertex 1 mm. ; length of wing 

 75 mm. 



Dark oUve-hroivn or dark sepia-coloured, dorsum of thorax 

 and abdomen with smoke-grey or drab-grey markings, as in 

 H. furtiva, Austen ; frontal callus raw umber-coloured or 

 mummy-brown, of moderate depth, extending from eye to 

 eye ; antennce coloured as hi H. furtiva, but first joint strongly 

 incrussate in middle ; coloration and markings of ivings and 

 legs as in H. furtiva, except that light wing -markings are 

 slightly less coarse, and that stigma is darker seal-brown and 

 someivhat longer ; front tibia, except basal third, incrassate. 



Agreeing with H. furtiva, Austen, in practically every 

 respect, except as already indicated and as follows : — lateral 

 frontal spots larger ; terminal joint oi palpi clothed above 

 with rather long and fine brownish hair ; first joint of 

 antennce seen from above strongly incrassate in middle (inner 

 margin strongly convex), tapering again towards tip. 



Nyasaland Protectorate : one specimen (type) taken in 

 1907 (Dr. /. E. S. Old) ; a second s[)ecimen from Zomba 

 Plateau {Sir Alfred Sharpe, K.C.M.G., C.B.). 



Hcematopota nocens, sp. n. 



$ . — Length (2 specimens) 8*6 mm. ; width of head 3 mm. ; 

 width of front at vertex V2 mm. ; length of wing 8*2 to 

 86 mm. 



Dark-brown / dorsum of thorax with three practically entire 

 smoke-grey str-ipes ; dorsum of abdomen clothed with short 

 appressed pale yellow hairs, markings of dorsum as in 

 H. stimulaus, Austen, but yelloivisli-grey and first segment 

 also with a pair of grey spots or blotches connected with basal 

 angles ; frontal callus clove-brown, extending from eye to eye, 

 and deeper towards each side ; coloration and markings of 

 ivings as in H. noxialis, Austen, except that light mark at 

 proximal end of stigma is somewhat more distinct ; legs as in 

 II. furtiva, Austen, except that pale band on front tibia is 

 someivhat less sharply marked, and that distal portion of front 

 iibicE is scarcely or not at all swollen. 



Head: front yellowish-grey, face and jowls smoke-grey, 

 a more or less distinct trace of a mummy-brown mark 

 between antenna and lower inner margin of eve on each 



8* 



