348 Bulletin de la Société Royale Eut ontologique d'Egypte 
The genus Neolophonotus contains the following 
subgenera : 
o • 
1. Neolophonotus s. str. Genotype : chalcogaster Lw. 
(Dipterenfauna Südafrika \s. i860, Berlin, 
IÒ 2 . [22/1]). 
2. Lophybus Herrn, in litt. Genotype : melanolo- 
phus Lw. Hoc. cit. 157 [229]. 
3. Lophopellis Herrn, in litt. Genotype : erythracan- 
tha Herrn. (Ztsclir. f. Hym. u. Dipt. 1907.73). 
4 . Trichonotus Lw. Genotype : pegasus Lw. loc. cit. 
i 65 [237]. 
5 . Das'ophrys Lw. Genotype : longibarbus Lw. loc. 
cit. 166 [ 2381 . 
6. Megadrillus Bigot Genotype : elachipterus Lw. 
loc. cit. 1 63 [ 235 ]. 
These subgenera differ in the following manner: 
(according to Prof. Hermann’s M. S.). 
I. Face slightly swollen; wings of male suddenly 
broadened on anterior margin . 2 
Face flat, wings not broadened. 3 
2. Face slightly and equally swollen to base of an¬ 
tennae; median line of mesonotum with ca¬ 
rina and strong maine-like hairs; small trans¬ 
verse vein on border of distal quarter of diseal 
cell . Sbgen. Trichonotus Lw;. 
Face elevated to a slight hump which ends a little 
abruptly below base of antennae; mesonotum-of 
usual shape, without inaine ; ovipositor cons- 
