﻿Bomhyliidae (Diptera) from Central Africa. 610 



The frons bears erect black hairs and dense whitish pubescence ; 

 face whitish grey, bare below the antennae, the whitish hairs being 

 confined to the inferior portion. Antennae very short, grey. Occi- 

 put with whitish scale-like hairs and a short fringe of white hairs. 

 Thorax clothed with erect black hairs and short grey pubescence. 

 The bristles are black; the hairs on the pleurae are white. Scutel- 

 lum with the same clothing as the thorax and with strong black 

 bristles on the margin. Haltères white, with yellowish stalk. 

 Abdomen black, with yellow borders on the hind margin of ihe 

 segments, clothed with grey pubescence and erect black hairs ; the 

 hairs on the sides are longer, but scales are wanting, the second and 

 fourth segments only bearing a tuft of black hairs ; marginal bristles 

 of the last segments long and strong. Underside grey, yellowish at 

 the tip, with white hairs ; genitalia shining red, black at the base, 

 the plate with a short black fringe. Legs black, with white scales 

 and black bristles ; tibiae reddish. Wings wholly hyaline, narrowly 

 Inteous at the extreme base. A small brown spot after the origin of 

 the third vein ; the small cross-vein and the base of the second vein 

 placed just opposite to it are margined with fuscous, forming one 

 dark spot ; the cross- vein at the end of the second basal cell is also 

 slightly infnscated. The recurrent stumps are very long ; the 

 second vein is sinuous at the tip ; the first posterior cell is narrowed 

 at the end ; the small cross-vein is placed before the middle of the 

 discal cell ; the lower vein of the discal cell is very sinuous ; anal 

 cell closed at the margin. The veins are black, the first, however, 

 being luteous. 



Type S and another specimen from North Nyasa, Aka- 

 manga, South Rukuru River, October 10, 1909 {Dr. J. B. 

 Davey). 



23. Molyhdamoeha dccipiens, sp. nov. 



(J Ç . Length (of 10 specimens), 7-12 mm. 



This species differs from all the preceding ones by its prevalent 

 black colour. It is very closely allied to the Mediterranean M. tri- 

 punctata, Wied., but differs in the colour of the legs, which are in 

 great part yellow ; indeed, the front and middle femora near the 

 end, the tibiae, and some basal joints of the front and middle tarsi, 

 are yellow. The white scales on the abdomen are more developed. 

 The male genitalia are red with black base, and not prominent. The 

 underside of the abdomen bears long white hairs, wliich are wanting 

 in M. tripunctata. Pattern of the wings and direction of the veins 

 the same as in M. tripunctata. 



The female is very similar to the male ; the tuft of hairs on the 

 genitalia is light yellow. 



