halteres
testaceous. Length of the body 7 lines; of the wings 14 lines.

64. CERIA RELICTA, n. s. _Mas._ Nigra, faciei lateribus, thoracis
maculis quatuor humeralibus, pectoris fasciis duabus lateralibus,
scutello, abdominis maculis duabus basalibus fasciisque duabus flavis,
tibiis flavescentibus apice piceis, alis apud costam nigris, halteribus
testaceis.

_Male._ Black. Head yellow beneath, and in front with the exception of a
black stripe on the disk of the face; arista white; thorax with two
yellow spots on each side in front; scutellum yellow; pectus with an
oblique yellow band on each side; abdomen not petiolated, with a tumid
yellow spot on each side at the base, hind borders of the third and
fourth segments yellow; femora at the tips and tibiae yellow, the latter
piceous towards the tips, tarsi piceous; wings greyish-black towards the
costa, excepting a lurid costal streak which extends along half the
length from the base; halteres testaceous. Length of the body 6 lines;
of the wings 11 lines.

65. CERIA RELICTA, n. s. _Foem._ Nigra, faciei lateribus abdominisque
fasciis duabus flavis, antennis ferrugineo variis, pedibus fulvis, alis
cinereis costam versus nigris, halteribus stramineis.

_Female._ Black. Head yellow, beneath and in front with the exception of
a black stripe on the disk of the face; first and third joints of the
antennae somewhat ferruginous, arista white; thorax with two indistinct
yellowish marks on the transverse suture, hind border of the scutellum
and hind borders of the second and third abdominal segments yellow; legs
tawny, tibiae paler towards the base; wings green, black for nearly half
the breadth from the costa; halteres straw-colour. Length of the body 6
lines; of the wings 11 lines.

This may prove to be the female of _C. relictura_, notwithstanding its
great difference from that species in the marks of the thorax and of the
abdomen, and in the colour of the legs.

Gen. MICRODON, _Meig._

66. MICRODON FULVICORNIS, n. s. _Mas._ Niger, aureo-subpubescens,
antennis, abdomine, pedibus halteribusque fulvis, femoribus nigris,
tibiis nigro vittatis, alis fuscis postice cinereis.

_Male._ Black. Head with gilded pubescence, cinereous behind and
beneath; antennae tawny, second joint above towards the tip and third
joint piceous; thorax slightly covered with gilded tomentum; pectus with
cinereous tomentum; abdomen with gilded tomentum towards the tip; legs
tawny, femora mostly black,