390 
Dl K. KERTÉSZ 
Female. Very similar, but the greyish tomentum is more extended 
on the disc of the thorax. Frons with parallel sides, glistening silvery white 
on the lower third, the upper part elevated shining black, bordered with 
small dimples at its sides, and ending in an acute projection in the white 
pubescence. Beak of the third antennal joint longer. 
Abdomen greyer but all dull; the sixth segment shorter than the 
fifth. Belly dull black. Ovipositor short, the thick and stout basal part 
shining black, only a little shorter than the thin almost straight brownish- 
yellow point which bears a few yellow hairs at its base and reaches with 
its tip the hind-margin of the third abdominal segment. 
Legs similar to those of the male, but in one specimen paler, the 
tibiae being also yellowish at their tip. 
Length about 2*5 mm; wings 2*8 mm. 
Four males and three females from Formosa, Tainan (YI. 1912). 
Very closely allied to nudus Kert. but differs in the female sex by 
the quite differently marked frons and antennae, and otherwise coloured 
abdomen and legs; from monas Perk, at first sight by the different colo¬ 
ration of the abdomen; from helluo Perk, by the markings of the frons, 
differently coloured antennae etc., but the hypopygium seems to be very 
similarly shaped in both. 
4. Dorylas separatus n. sp. d\ 
Eyes touching for about half the space between the vertex and the 
antennae. Frons velvet black with a very fine middle stripe of brownish- 
grey tomentum, which becomes wider and forks at the middle of frons ; 
the two branches of the fork not reaching the antennae. Face dull black, 
in some lights greyish. Proboscis brownish. Back of the head light greyish 
becoming, towards the occiput, more pale brownish. Vertex black, only 
a little shining. Antennae black, the third joint covered by brownish to¬ 
mentum ; the second joint bears three short bristles ; the third being so¬ 
mewhat pointed at the tip, but not sharp, nor drawn out ; arista black, 
shining and thickened about the base. 
Thorax dull pale brownish, but black on the fore margin; bare, but 
a few tiny black hairs occur behind the humeri and along the sides ; pleurae 
greyish; scutellum dull pale brownish with tiny but distinct black hairs 
round its margin. Metanotum greyish. 
Abdomen dull velvet black, only the greyish pollinose hind-margins 
a little shining ; the grey side-spots extend on to the disc along the hind- 
margins ; the basal segment almost entirely grey without bristles laterally ; 
second and third with very small grey hind-margins appearing as a fine 
