NUS CRABRO, _Latr._

1. CRABRO (RHOPALUM) AGILIS. _C._ obscuro-nigra, clypeo argentato,
capite, thorace abdomineque flavo variis.

_Female._ Length 4 lines. Black, opake; head larger than the thorax,
quadrate; the ocelli in a curve on the vertex; the clypeus and lower
portion of the cheeks with silvery pile; the scape, two basal joints of
the flagellum, the palpi, and the mandibles, yellow; the latter
rufo-piceous at their apex. The margin of the prothorax, the tubercles,
the scutellum, the tibiae and tarsi, the anterior femora and the
intermediate pair at their apex yellow; the anterior femora black above;
the wings subhyaline and iridescent, the nervures testaceous. Abdomen:
with an elongate clavate petiole; the first segment with an oblique
yellow macula on each side, the third with a large lateral macula at its
base, and the following segments entirely yellow.

_Hab._ Celebes.

This species closely resembles the _C. Westermanni_ of Dahlbome, from
the Cape of Good Hope.

GENUS CERCERIS, _Latr._

1. Cerceris instabilis, _Smith, Cat. Hym. Ins._ pt. iv. 452. 74.

_Hab._ India, China, Celebes.

2. Cerceris unifasciata, _Smith, Cat. Hym. Ins._ pt. iv. 456. 84.

_Hab._ North China, Celebes.

3. Cerceris fuliginosa, _Smith, Cat. Hym. Ins._ pt. iv. 454. 79.

_Hab._ Celebes.

4. CERCERIS VARIPES. _C._ nigra, facie flavo varia; alis fuscis basi
hyalinis; pedibus variegatis; abdomine flavo maculato.

_Male._ Length 6 lines. Black; a line down the inner orbits of the eyes,
continued along the lower margins of the face, and uniting with the
clypeus, which as well as a line above it between the antennae are
yellow; a spot on the scape in front, and the mandibles, yellow; the
latter rufo-piceous at their apex. Thorax: a spot on each side of the
prothorax, a minute one on the tegulae; the postscutellum, the
intermediate and posterior coxae and trochanters, the anterior tibiae
behind, the femora beneath, and the intermediate and posterior tibiae
yellow; the femora reddish above and at their articulations; the
posterior femora and tibiae black, with the tarsi rufo-testaceous; the
anterior wings and the apex of the posterior pair brown, the base of the
anterior pair hyaline. Abdomen: the second and three following segments
with a short yellow stripe on each side.

_Hab._ Celebes.

Tribe VESPIDAE.

Fam. EUMENIDAE, _Westw_.

Genus ZETHUS, _Fabr._

1. Zethus cyanopterus, _Sauss. Mon. Guepes Sol_. i. 23. 2.

Gen