TABANINAE. — PART IV. 299 



grey spots behind transverse suture ; swelling occupying triangular depression at 

 each end of transverse suture drab-grey, clothed with outstanding dark brown 

 hair, mixed with glistening whitish hair along posterior margin ; clove-brown 

 area of dorsum sparsely clothed with hair of same colour as ground, postalar 

 calli and grey mark on each side above base of wing clothed with whitish hair ; 

 pleurae and pectus light grey, clothed with whitish hair. Abdomen : lateral 

 extremities of dorsal scutes of first two segments grey ; dark area of dorsum 

 clothed with short, appressed, clove-brown hair, lateral extremities of dorsal 

 scutes of first five segments clothed with whitish hair ; venter light grey 

 pollinose (last segment, except its hind border, black and clothed as usual with 

 coarse, erect, black hair), ventral scutes of second to sixth segments inclusive 

 each with a large, dark-haired, median blotch resting on base but not quite 

 reaching hind margin, grey area of venter clothed with short, appressed, whitish 

 hair. Wings : light markings, as shown in fig. 5. much reduced, but nevertheless 

 recognisable as remains of usual three rosettes ; apical sinuous mark disappearing 

 in second submarginal cell, near anterior branch of third longitudinal vein ; 

 stigma clove-brown, elongate, dark blotch below it not darker than remainder of 

 dark area of wing. Squamae dusky, their borders clove-brown. Halteres: cream- 

 coloured, knobs with a clove-brown or dark seal-brown patch at base above and 

 below, leaving outer border as well as distal extremity cream-coloured. Legs : 

 coxae grey, clothed with whitish hair, distal extremities of front pair clove- 

 brown or greyish clove-brown, clothed, at least in front, with blackish hair ; 

 front femora greyish pollinose on posterior and inferior surfaces, middle and hind 

 femora greyish pollinose except distal extremities (median portion of greyish 

 area of middle femora sometimes greyish fawn-coloured), all femora clothed with 

 whitish hair on greyish area and with black hair elsewhere, distal extremities of 

 hind femora distinctly fringed with black hair below ; front tibiae slightly 

 thickened beyond middle, front and hind tibiae each with a single, fairly deep, 

 milk-white band just beyond base, middle tibiae each with two bands, milk-white 

 tibial bands clothed with glistening whitish hair, tibiae clothed elsewhere with 

 black hair (hind tibiae on anterior surface midway between band and distal 

 extremity also with a few glistening whitish hairs), hind tibiae on outer surface 

 with a fairly long and dense fringe of black hair, commencing on distal third 

 of milk-white band, where it is at its longest, and becoming gradually shorter 

 until it reaches the tip ; first joint of middle and hind tarsi with a cream- 

 coloured, black-haired band occupying proximal half. 



Uganda Protectorate : type and two para-types from Lake George, "in 

 forest," 20. ii. 1913 (Dr. C. H. Marshall); a third para-type from Entebbe, 

 22. viii. 1912 (C. C. Gowdey) : — presented to the National Collection by the 

 Imperial Bureau of Entomology. 



This striking species is closely allied to Holcoccria nobilis, Griinb. (Zoologischer 

 Anzeiger, xxx., no. 11/12, 3rd July 1906, p. 358, figs. 10 and 11), which 

 is known to occur in German East Africa, the Nyasaland Protectorate, and 

 Southern Rhodesia. In the shape of the antennae, as indeed in all other cephalic 

 characters, as well as in all those exhibited by the legs, the two species are in 

 absolute agreement. Griinberg's species can, however, at once be distinguished 



