BORYLAIDAE. ' 
389 
3. Dorylas roralis n. sp. d ?. 
Male. Eyes touching for less than half the space between the vertex 
and the antennae. Frons and face glistening silvery white; vertex shining 
black ; back of the head light greyish but towards the occiput a little 
brownish, well puffed out, with many tiny black hairs in irregular rows. 
Antennae black on the basal joints, but brownish glossed with silver on the 
third joint especially at its pale tip ; the second joint bears only a very 
short bristle beneath; the third joint is long and has a beak. Arista 
black, thickened about the base. 
Thorax dull brownish on the disc, the part in front of the scutellum 
with grey pubescence. Pleurae and metanotum greyish. Scutellum brow¬ 
nish a little shining, the tiny hairs round its margin indistinct. 
a b c 
Fig. 3. Dorylas roralis n. sp. 
a antenna, b upper part' of the froiis of the female, c hypopygium of the male from above. 
Abdomen seen from above dull black, from the side dull greyish ; 
first segmnet with dense light greyish pubescence ; fifth segment only a 
little longer than the fourth, on the right longer than on the left, bearing 
two depressions. Hypopygium large, longer than the fifth segment* with 
a large depression at the base above, and divided into two asymmetrical 
parts, the right of which is smaller, shining, and bears a small almost circular 
depression on its right side, the left not very densely brownish pubescent 
with some tiny erected hairs, but bare and shining at the base. 
Legs black, except the tip of the femora, the basal third of the tibiae, 
and all the tarsi, but the last joint of these latter darkened. Femora dull, 
covered with greyish tomentum, only the hind pair shining behind ; the 
middle femora only with a tiny serration on the tip half. Pulvilli and claws 
yellow, the latter black on the tip half. 
Wings not conspicuously long, with indistinct alula, uniformly dar¬ 
kened ; stigma brown, about half as long as the next segment of the costa 
(12:22); middle cross-vein at the basal third of the discal cell (12:89). 
Squamae small, yellowish. Halteres dull brown, the style yellowish. 
