r extending to the
apical margin.

_Hab._ Aru.

Gen. AGATHIS, _Latr._

1. AGATHIS FUMIPENNIS. _A._ ferruginea; capite, abdominis apice
tarsisque posticis nigris; alis obscure fuscis.

_Female._ Length 4 lines. Reddish-yellow; the head, apical joint of the
intermediate tarsi, the apex of the posterior tibiae, and the third and
following segments of the abdomen black; the thorax and legs with a
thin, short, pale fulvous pubescence; the head and abdomen smooth and
shining; the head produced before the eyes into a kind of beak,
rufo-piceous anteriorly. Thorax narrowed before the wings, which are
dark fuscous, with a hyaline irregular mark below the stigma, crossing
the submarginal cell; the anterior margin of the anterior wings
pubescent; the metathorax broad, margined laterally, with a central
forked carina, and a crooked one on each side; the posterior legs
incrassate. Abdomen with the sides of the upper surface carinated.

_Hab._ Aru.

Fam. CHRYSIDIDAE, _Leach_.

Gen. STILBUM, _Spin._

1. Stilbum splendidum, _Fabr. Syst. Piez._ p. 170. 1.

_Hab._ Aru; Senegal; Java; Bengal.

2. Stilbum amethystinum, _Fabr. Syst. Piez._ p. 176. 32.

_Hab._ Aru; Australia.

Fabricius includes this insect in the genus _Chrysis_; the typical
specimen, however, proves that it belongs to the more modern genus
_Stilbum_: it is very distinct from _S. splendidum_, being much more
strongly and coarsely punctured; and the teeth which arm the apical
segment are differently disposed on the margin.

Fam. TENTHREDINIDAE, _Leach_.

Gen. ORYSSUS, _Fabr._

1. ORYSSUS MACULIPENNIS. _O._ niger, punctatus; pedibus ferrugineis;
alis fuscis fascia hyalina ante cellulam marginalem sita.

_Female._ Length 5-1/2 lines. Black; the head rugose, the front coarsely
so, with a row of transverse tubercles running from the vertex along the
inner orbits of the eyes, and crossing the front at half their length;
the cheeks with a cinereous down, and a line of silvery-white pubescence
or down, along the outer orbits of the eyes. Thorax coarsely punctured;
the mesothorax with a central longitudinal smooth elevation; wings
fuscous, with a broad transverse hyaline fascia before the base of the
marginal cell, the tips of the wings hyaline; the legs ferruginous, with
the coxae and trochanters black; the posterior tibiae with a double row of
serrations outside. Abdomen shining and closely punctured; the base and
apex coarsely so.

_Hab._ Aru.

Gen. X