164 Miss G. Ricavdo on 



Tabanus Sagittarius, Macq , I. c. p. 123 ; Walker, List Dipt, 

 pt. v. Suppl. ), p. 228 (1850). 



Tabanus socius, Walker, I. c. pt. i. p. 160. 

 Tabanus serratus, Loew, I. c. p. 39, tab. i. fig. 21. 



Nine females from Pretoria ( W. L< D.) ; eight females 

 from Fort Johnston, Nyasaland (Rend'iU) ; one female from 

 Uganda {Ansorge). 



Tabanus latipes, Macq., I. c. i. p. 119; Loew, I. c. p. 36; 

 Peters, Reise nach Mossambique, Zool. v. 2 (1862). 



Tabanus latipes, "Walker, List Dipt. pt. i. p. 236, pt. v. Suppl. 1, p. 328 



(1854). 

 Tabanus fenestrahts, Walker, Zoologist, viii. Appendix 67 (1850) ; 



List Dipt. v. Suppl. 1, p. 219 (1854). 

 Tabanus africanus, Gray. 



One female from Zomba, British Central Africa ; three 

 females from Angola (Monteiro). 



Tabanus nyasce, $ , sp. n. 



One female (type) from Fort Johnston, Nyasaland (Ren- 

 doll). 



Belongs to division B A b 3 of Loew. Eyes naked. No 

 appendix. Fore tibiae not thickened. Wings clear. 



Brown. Face and palpi greyish, the latter with short 

 black ; ubescence on the uppcrside. Forehead yellowish 

 grey, with a shining reddish oblong spot above antenna?., a 

 stripe ot the same colour about hall as long again proceeding 

 from it towards the veitex. Antenna? with the first joint on 

 its upper half thickly covered with black hairs, the second 

 reddish, the third on first annulation greyish. Thorax with 

 giey tomenfum and five grey stripes. Abdomen with trian- 

 gular greyish spots on segments 2-5 forming an irregular 

 stripe ; on the side of each segment a greyish oblong spot, not 

 reaching the anterior margin; the posterior margins of seg- 

 ments ate narrowly grey; the extreme lateral margins of 

 fifth and sixth segments are fulvous ; the dorsum of abdomen 

 coveied with short black pubescence. The ventral part of 

 abdomen is reddish, with an indistinct black stripe in the 

 centre. Legs with lor g grey and some black hairs on anterior 

 if mora and tibiae; the posterior tibia? have shorter pubescence, 

 chiefly black. "Wings in aline, the fore border and base 

 brownish yellow, veins brown. Halferes brown, with yellowish 

 club. 



Length 15^ millim. ; width of head 5 millim. 



