neio Species o/Tabani. 271 



and slender, with a medium-sized tooth. Forehead tlie same 

 colour as the face, aliout five times as long as wide, with 

 reddish-brown oblong callus reaching the eyes and continued 

 as a raised line almost to i[\<i vertex. Eyes with no band. 

 Thorax brownish red, covered with grey toraentum, no dis- 

 tinct stripes visible ; traces of golden pubescence on the sides 

 above the wings, continuing to the base of the scutellum, 

 some short l)LicIc pubescence is present on the dorsum ; sides 

 and breast reddish with grey tomentum, black hairs above 

 and grey hairs below ; the scutellum is similar to the thorax. 

 Abdomen rather long, dull blackish; the second segment 

 ])artly dull reddish, with a grey tonientose triangular spot on 

 the base of the second, third, fourth, and fifth segments, and 

 narrow greyish segmentations on the first four segments, with 

 golden or whitish hairs at the sides of these segments, else- 

 where on the sides the pubescence is black, also ou the 

 dorsum of the abdomen wherever the dark colour prevails ; 

 the underside black, with narrow segmentation of whitish 

 pubescence. Legs wholly black, the coxa3 with grey toraen- 

 tum and pubescence, the femora with s'ome whitish pubescence, 

 especially on the hinder ones, elsewhere the pubescence is 

 black. Wings longer than the abdomen, hyaline with yellow- 

 brown veins and stigma, tinged with brown along the fore 

 border and at extreme base and on the whole apex ; the brown 

 colouring is, however, faint in the upper part of the second 

 submarginal cell and a pale streak is visible in the first sub- 

 marginal cell, the hind border is also tinged with brown, 

 leaving the discal, basal, and apical cells clear, except along 

 the veins; all posterior cells widely open. 



Tahanus grandissiinus, ?, sp. n. 



The following specimens are in the British Museum 

 Collection : — 



Tyi)e (female) and another female from Fwambo, N.E. 

 Ehodcsia, near the south-east end of Lake Tanganyika 

 {W. II. Nutt), 9(). 83 ; two females from Lake Tanganyika 

 (IF. A. Cunning ton), 1906. 76; two females from Lunzua, 

 British Central Africa {A. Sharpe) , 1901. 29 ; one female 

 from Deep Bay, west coast of Lake Nyasa, 1G70 feet, 

 26. ii. 94 (/?. Craicshoy), 98. 81. 



A large robust black species with dark brown wings, the 

 largest S[)ecies of Tahaniis as yet described from Africa, 

 the type nieasuring 29 mm., the other specimens ranging 

 from 23 mm. to 26 mm., the two from Lake Tanganyika 

 being the smallest. Bigot described a species as Tahanus 



