DORYLAIDAE. 
891 
line ; on the fourth the grey colour occupies more than a third, on the fifth 
more than three quarters of the length of the segment ; the fifth segment 
twice as long as the fourth. Hypopygium rather small, shorter than the 
fourth segment, dusted, brown, scarcely shining, bearing some erect 
hairs, and with an indentation at the fore-margin and a small, circular 
depression on the left side. 
Legs dull greyish black, but the tips of all the femora, the base of the 
tibiae, and all the tarsi, yellow; the last tarsi darkened on the upper side ; 
Fig. 4. Dorylas separatus n. sp. cT . 
a antenna, 6 frons, c hypopygium from above, d hypopygium from behind. 
the hind femora are shining and bare behind. The middle femora only with 
a tiny serration on the tip half. Pulvilli and claws yellow, the latter black 
at the tip. 
Wings not conspicuously long, with distinct alula, equally darkened, 
only the basal part of the subcostal and marginal cell hyaline ; stigma brown, 
about three times as long as the next segment of the costa ; middle cross¬ 
vein placed a little before the middle of the discal cell (28 : 60). Squamae 
small, yellowish. Halteres dull, blackish-brown. 
Length about 8*8 mm; wings 4 mm. 
One male from Formosa, Kanka u (IY. 1912). 
This species is very closely allied to D. lentiger Kert., but differs 
from it by the quite differently marked frons, differently shaped hypo- 
pygium, not so deeply darkened wings and by not having two indentations 
on the fifth abdominal segment. 
5. Dorylas gratiosus n. sp. d\ 
Eyes touching for less than half the space between the vertex and 
the antennae. Frons yellowish-white, the face glistening white; vertex 
black, • shining, though covered with very fine greyish tomentum ; back 
of the head light greyish but becoming, towards the occiput, brownish, well 
