158 F. W. EDWARDS. 



Thorax rather dark browu with pale markings of the usual tj-pe which, though 

 distinct, are not very conspicuous. Median stripe very narrow, usually extending 

 the whole length of the scutum and over the scutellum ; lateral stripes reaching 

 the post-sutural spots. Scutellum with the tip sometimes grey, sometimes yellowish 

 brown. "\Miole mesonotum clothed with mixed short black hair and yellomsh close- 

 lying pubescence. Pleurae dark bro^^'nish, clothed for the most part with dark hair. 



Abdomen reddish bro\Ani, darker on the last few segments : all except the first two 

 tergites have pairs of roundish light bro\m spots ; there is also a narrow median light 

 bro\M:i stripe running from the base of the second to the apex of the sixth segment, 

 slightly broadened at the apex of the second ; the hind margins of all the tergites are 

 also distinctly light brown. Pubescence mostly blackish : pale on the venter and 

 along the posterior, though not the lateral, borders of the tergites. 



Legs brown ; tarsi, except for the base of the metatarsi, somewhat darker. Front 

 tibiaQ with one rather narrow and indistinct hght brown ring near the base ; middle 

 and hind tibiae each with two rather indistinct light brown rings. Neither the front 

 nor hind tibiae noticeably thickened. 



]\'ings rather dark browii, markings light brown ; stigma darker brown, except at 

 the base. Xo darker clouds over the cross- veins. Squamae light bro^vn. Halteres 

 with whitish stem and bro\\-n knob. 



Length, 11 mm. ; wing-length, 9*8 mm. ; width of head, 3*5 mm. ; width of front 

 at vertex, 1*0 mm. 



Sierra Leone: Bo, iv-v,1910 {Dr. H. E. ArbucJcle), 4 $ (including t}'pe) ; 

 Batkanu Town, vii.1909 {Dr. J. 0. Murphy), 1 2; Makump, 19.ix.l912, '2 C; 

 Sandyallu, 3.^iii.l912, 1 ?; Senahu, 13.x. 1912, 1 C {Dr. J. J. Simpson): also 

 one 2 "v^'ithout exact data, presented by the London School of Tropical Medicine 

 (coll. by Dr. J. Pearson). 



H.furians is apparently most nearly allied to H. sanguinaria, Aust.. from Rhodesia, 

 and H. edax, Aust., from Uganda. Both these species differ in the shape of the frontal 

 callus, which touches the eyes, in the shape of the third antennal joint, etc. Its 

 nearest known relative in West Africa appears to be H. torquens, Aust., which differs 

 in its smaller size ; rather longer and less swollen first antennal joint ; frontal callus 

 touching eyes ; pale-haired pleurae ; less distinctly spotted abdomen ; more 

 conspicuous rings on tibae ; dark squamae and lighter knob of halteres. 



Haematopota perturbans, sp. nov. (PL II, fig. 2). 



:?. Head (fig. 10) : Face and jowls grey ; a clearly-outlined blackish patch on 

 each side of the antennae, nearly but not quite touching the eye-margins. Front 

 light brown, with a pair of darker patches at the vertex ; median spot absent ; 

 lateral spots rather large, round, not quite in contact with the eye-margins, A^-ithout 

 pale borders. Frontal callus rather narrow, shining black, shghtly wrinkled, extending 

 from eye to eye ; its upper margin somewhat convex, with a narrow median pro- 

 jection, its lower margin concave above each ajitenna. Spot below callus blackish, 

 rather narrow. Antennae reddish brown ; the third joint blackish, except towards 

 the base ; first joint shining, considerably swollen, barely twice as long as its greatest 

 breadth. Palpi broAmish, clothed with black hair. 



