dered with silvery white; legs blue and purple, thickly clothed with
long whitish hairs, femora bluish-green, fore tibiae with pale gilded
down beneath, hind tibiae with a black bristly apical tuft beneath; wings
blackish, grey towards the base; halteres whitish, marked with black.
Length of the body 11 lines; of the wings 20 lines.

2. LAPHRIA PLACENS, n. s. _Mas._ Cyanea, capite aurato, mystace setis
paucis longis nigris; antennis nigris, articulo tertio fusiformi;
pectore albido, abdomine angusto, femoribus intus tibiisque purpureis;
alis nigricantibus basi cinereis, halteribus piceis.

_Male._ Blue. Head gilded in front, whitish behind; mystax with a few
long black bristles; proboscis and antennae black, third joint of the
latter fusiform; pectus whitish; abdomen cylindrical, much narrower than
the thorax, and about twice its length; femora on the inner side and
tibiae purple, tarsi black; wings blackish, cinereous towards the base;
halteres piceous. Length of the body 4-1/2 lines; of the wings 8 lines.

Subfam. ASILITES, _Walk._

Gen. ASILUS, _Linn._

3. ASILUS SUPERVENIENS, n. s. _Mas._ Cinereous, capite subaurato,
mystace aurato setis paucis nigris, thorace vittis tribus latissimis
nigris, abdomine fulvescenti-cinereo, pedibus rufescentibus, femoribus
nigro vittatis, tarsis nigris, alis cinereis apice nigricantibus,
halteribus testaceis.

_Male._ Cinereous. Head slightly gilded, pale cinereous, and clothed
with pale hairs behind; mystax composed of gilded bristles, above which
there are a few shorter black bristles; antennae black, third joint
elongate-fusiform, arista much longer than the third joint; thorax with
three very broad hardly divided black stripes; abdomen with a slight
fawn-coloured tinge, tip black, sexualia very small; legs reddish,
femora striped above with black, tarsi black, reddish at the base; wings
cinereous, blackish towards the tips; halteres testaceous. Length of the
body 8 lines; of the wings 14 lines.

Gen. OMMATIUS, _Illiger_.

4. Ommatius noctifer, _Walk._ See page 88.

Fam. EMPIDAE, _Leach_.

Gen. HYBOS, _Fabr._

5. HYBOS DEFICIENS, n. s. _Mas._ Niger, thorace fulvo globoso macula
dorsali nigra, abdomine basi fulvo, pedibus anterioribus testaceis,
femoribus posticis subtus spinosis, alis cinereis apice obscurioribus,
stigmate venisque nigris, halteribus testaceis, apice piceis.

_Male._ Black. Thorax and pectus tawny, the former globose, with a black
dorsal spot; abdo