green, abdomen purple; wings
dark fuscous with a violet iridescence; an oblique white line on each
side beneath the scutellum; legs and antennae black.

_Hab._ Celebes.

Fam. ICHNEUMONIDAE.

Genus MEGISCHUS, _Brulle._

1. Megischus indicus, _Westw. Trans. Ent. Soc._ new ser. i. 1851.

_Hab._ Philippine Islands, Celebes.

Genus MESOSTENUS, _Brulle._

1. MESOSTENUS ALBO-SPINOSUS. _M._ niger, albo varius, abdominis
segmentis albo marginatis, metathorace spinis duabus albis armato.

_Female._ Length 5-1/2 lines. Black; a half-circular spot on the
clypeus, a heart-shaped one above it, a spot at the base of the
mandibles, the orbits of the eyes, interrupted at their vertex,
yellowish white, the palpi of the same colour, and a broad incomplete
annulus on the antennae beyond their middle. Thorax: the mesothorax with
two deeply impressed oblique lines inclined inwards and terminating at
an ovate spot in the middle of the disk, the scutellum and an oblique
line on each side a little before it, a horseshoe-shaped spot in the
middle of the metathorax, and a little below it on each side a conical
tooth, yellowish white; four spots beneath the wings, one on each side
of the metathorax, and the coxae beneath, white; the legs ferruginous,
with the intermediate pair dusky behind, the posterior pair entirely so,
the femora being black; the wings hyaline, nervures fuscous. Abdomen:
punctured and with a white fascia on the margins of the three basal
segments; the two apical segments with very narrow fasciae.

_Hab._ Celebes.

This species is closely allied to the _M. literatus_ of Brulle; but it
differs too much, I think, to be identical with it.

2. PIMPLA TRIMACULATA. _P._ flava, oculis, macula circa ocellos,
vittulis tribus mesothoracis setisque caudalibus nigris.

_Female._ Length 6 lines. Yellow; the antennae fuscous above, also a
fuscous cloud at the apex of the anterior wings, the wings hyaline with
the nervures black; a spot on the scape within, and three longitudinal
stripes on the mesothorax, black; the latter slightly punctured
anteriorly; the metathorax smooth and shining, with three oblique carinae
on each side, and a small subovate enclosed space in the middle of the
disk. Abdomen punctured, all the segments margined at their apex, and
each with a deeply impressed line at their extreme lateral margins; the
sixth segment with two minute black spots at its basal margin, the two
apical segments smooth and shinin