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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
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