— M5 — 



II. — Bittacus fumosus n. sp. 



Head brown; rostrum brownish black; ocelli dark brown, and 

 the space between them blackish. Antennae blackish brown; the 

 two basai joints pale brown. Thorax brown. Abdomen pale greyish 

 brown. Legs brown, the first pair somewhat darker; apices of 

 femora and tibiae black. Wings hvaline with stronglvsmokv tinge, 

 especiallv at the apices. Longitudinal nervures and the first séries 

 of cross veins nearest to the furcation of média and the radial 

 sector dark smokv brown; the remainder of cross veins in the 

 apical part of Avings not so distinct. Pterostigma subquadrangular, 

 twice as long as broad, dark smoky brown. The i'' anal vein termi- 

 nâtes nearer to the base than the furcation of the radial sector and 

 média. No apical cross vein in the area between the 2nd cubital 

 vein and the first anal vein. 



FiG. 12 — Bittacus fumosus (Mus. Stockholm). 



Length of fore wing 24 mm; hind wing 21. mm. 



One spécimen, collected in British East Africa bv Lindblom, in 

 the Muséum of Stockholm. The sex is undeterminable because the 

 apex of abdomen has been lost. 



At first sight it has verv great likeness to B. iveelei, and the 

 colour of the Avings is almost the same; but the nervation of the 

 wings and the shape of the pterostigma make it easely recogni- 

 zable. 



