﻿Bomhyliidae {Diptera) from Central Africa. 617 



black hairs ; face with black hairs, with only a few pale hairs inter- 

 mingled. Antennae black, of the same form as in the preceding. 

 Thorax and scutellum velvety black, covered with golden tomentum, 

 as in the preceding ; the hairs on the pleurae, however, are of a golden 

 colour, not white. The abdomen has only the first segment black, 

 and is, moreover, a little darkened at the tip. Haltères yellowish. 

 Legs wholly orange-red, the tarsi darkened, with thin black bristles. 

 Wings evenly and slightly darkened over their entire surface. The 

 second vein is only gently curved at the apex, without the usual 

 strong arcuate fold ; upper branch of the third vein long, gently 

 curved, without appendix ; discal cell long and narrow ; small 

 cross-vein placed on the first fourth of discal cell, anal cell but little 

 narrowed at the end. 



Type $ , from Southern Nigeria, Benin City, March 20, 

 1910 ('/. J. Simpson) ; a single specimen. 



9. Moliihdamocha, Sack (1909). 



This genus is only slightly differentiated from the 

 following one ; but the species has a particular facies, 

 which seems to be sufficient for its distinction. In this 

 genus is also, notable the development and length of the 

 recurrent veinlets of the wings. The wings are hyaline, 

 with a few dark spots on the cross-veins and forks ; the 

 tibiae are yellow. The species in the collection can be 

 distinguished as follows : — 



1 (2). Face with white hairs only ; anal cell closed 



lencopogon, sp. n. 



2 (1). Face mostly or predominantly black-haired ; anal cell 



open. 



3 (4). Abdomen with very large scales towards the sides, com- 



pressed at the tip ; pubescence of the body yellowish ; 

 genital plate of male with black fringe ; all the cross- 

 veins on the wings infuscated . pu7ictipennis, Wied. 



4 (3). Abdomen without lateral patches of large scales, not com- 



pressed at the tip ; genital plate without a black fringe. 



5 (6). Ground colour of body grey ; abdomen with yellow 



pubescence ; the yellow hairs in front of the thorax very 

 long ; hairs on the face mostly yellowish 



incisuralis, Macq. 



6 (.5). Ground colour black ; abdomen with the yellow pubescence 



very scanty ; yellow hairs in front of the thorax 

 . sparse ; black hairs predominating on the face 



decipiens, sp. n. 



