barbaque albidis, abdomine stylato, segmentis cano marginatis.

_Male and Female._ Blackish. Antennae and legs black; thorax slightly
covered with cinereous tomentum; stripes, pectus, and underside of the
abdomen hoary; tibiae red, with black tips; wings brownish grey; radial
areolet with a slate-coloured stripe. _Male._ Head slightly gilded;
mystax with a few black bristles and many gilded bristles; beard
testaceous-whitish; sides of the abdomen and hind borders of the
segments lutescent. _Female._ Head and beard whitish; mystax with many
black bristles and a few white bristles; abdomen with an apical style,
more than one-third of the length of the preceding part, sides and hind
borders of the segments hoary. Length of the body 12-14 lines; of the
wings 14-18 lines.

Gen. ASILUS, _Linn._

39. Asilus longistylus, _Wied. Auss. Zweifl._ 1. 433. 13. Inhabits also
Java.

Gen. OMMATIUS, _Illiger._

40. OMMATIUS NOCTIFER, n. s. _Mas._ Niger, capite aurato, thoracis
incisuris, scutello, pectore, segmentorum abdominalium marginibus
ventreque canis, tibiis fulvis apice nigris, alis cinereis costa
apiceque nigricantibus, halteribus ferrugineis.

_Male._ Black. Head gilded; mystax with a few black and several gilded
bristles; sutures of the thorax, scutellum, sides, pectus, hind borders
of the abdominal segments, and underside hoary; tibiae tawny, with black
tips; wings cinereous, blackish along the costa and towards the tips,
veins black; halteres ferruginous. Length of the body 6--6-1/2 lines; of
the wings 11-12 lines.

41. OMMATIUS LUCIFER, n. s. _Mas._ AEneo-niger, capite argenteo, pectore
albido, abdominis segmentis ferrugineo marginatis, pedibus testaceis,
femoribus nigro-vittatis, tarsis nigris, alis limpidis apice
nigricantibus costa atra apud medium incrassata, halteribus testaceis.

_Male._ Bronze-black. Head silvery in front; mystax with a few black and
a few whitish bristles; pectus whitish; hind borders of the abdominal
segments ferruginous; legs testaceous; femora striped with black; tarsi
black, ferruginous at the base; wings limpid, blackish at the tips;
costa deep black, incrassated in the middle; halteres testaceous. Length
of the body 6 lines; of the wings 11 lines.

42. OMMATIUS RETRAHENS, n. s. _Foem._ Cinereo-niger, facie argentea,
pectore albido, pedibus testaceis, tarsis, femoribus tibiisque apice
femoribusque posticis nigris, alis limpidis apice subcinereis,
halteribus testaceis.

_Female._ Ci