NORTH-EASTERN RHODESIA AND THE CONGO FREE STATE. 289' 



Dorcalcemus compactus, Austen. 



Pangonia compada, Austen, Ann. Mag. Nat. Hist. ser. 8, vol. i, p. 212 (1908) ; 

 Illustrations o£ African Blood-Sucking Flies, p. 61, plat(3 iv, fig. 28 (1909). 



The Diptera brought home by Mr. 8. A. Neave include two ? ? of this- 

 species from North-Eastern Rhodesia — one from the Upper Luangwa Valley,. 

 1800-2000 ft., 21.iii.l908, the other taken between Fort Jameson and 

 Nyanji, 3000-3500 ft., 21.iv.l904. The latter specimen belongs to the 

 subspecies centralis {Pangonia compacta centralis, Austen, Ann. Mag. Nat.. 

 Hist. loc. cit. p. 214) rather than to the typical form. Both individuals are 

 now in the Hope Department of the Oxford University Museum. 



Genus EHINOMYZA, Wied. 



Rhinomyza umbraticola, sp. n. (Fig. 4.) 



$ . — Length (13 specimens) 11-4 to 13 mm. ; width of head 3-6 to 5 mm. ; 

 width of front at vertex 0*5 to 0'6 mm. ; length of wing 11*25 to 12*8 mm. 



Dorsum of tlwrax ci)Uiainon, dorsum of abdomen ocliraceous, ivifh two rotes 

 of more or less distinct, transversely elongate, dark brown blotches ; pleurce,. 

 pectus, and ventrcd surface of abdomen ochraceous-bujf ; icings, as shotvn in 

 Pig. 4, ivith a light brown or only moderately dark transverse ba7id, a similarly 

 coloured blotch occupying pro.vinial half of each basal cell and proAmal 

 extremity of ancd cell, and tip, from just beyond fork of third longitudinal vein^ 

 tinged icith light sepia; legs ochraceous-buff, front tarsi brown, tips of joints 

 of middle and land tarsi light mummy -brown. 



Head buff, occiput smoke-grey ; front and frontal callus narrower than in 

 Rh. denticornis, Wied., and other Ethiopian species of this genus ; frontal 

 callus raw-sienna-coloured, its upper extremity tawny ; ocellar spot dark 

 brown ; lower surface of head clothed with mummy-brown or pale brownish 

 hair ; jmlpi buff, outer side of terminal joint darker (ochraceous-buff or 

 tawny-ochraceous) and clothed with minute, appressed, black hairs, proximal 

 joint clothed with brownish hair; first and second joints of antennce raw- 

 sienna-coloured, clothed with minute black hairs which become longer 

 below, third joint darker, varying from ochraceous-buff to tawny, last two 

 or more annuli of third joint mummy-brown, upper angle of second joint 

 moderately produced, upper branch of third joint slender and tapering to 

 a point (more slender than in Rli. denticornis, ^i^di.), lower branch much 

 as in Rh. denticornis (less slender than in Rh. perpulcra, Austen), third 

 joint about 1*6 mm. in length, its upper branch (measuring from base of 

 joint) rather more than half as long. Thorax clothed on dorsum mainly 

 with short brownish hair, and on pleurae with pale yellowish, sometimes 

 mixed with brownish hair. Abdomen : dark brown blotches on dorsum vary 

 in size in different individuals, and when fully developed, as shown in fig. 4, 

 occur on second to sixth segments inclusive ; the blotches, which rest on 



