1. Oxybelus agilis, Smith, Cat. Hym. Ins. pt. iv. 387. 25.
Hab. India, Celebes.
Genus 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 tibiæ 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.