Gen. Char.: Head transverse; ocelli in a triangle on the vertex; antennæ filiform, scarcely geniculated, the scape short, the basal joint of the flagellum subglobose, the second joint clavate, the remainder subequal; face flat, or slightly concave, carinated longitudinally in the centre between the insertion of the antennæ; clypeus subtriangular, convex, deflected at the lateral angles; labrum subcircular, very gibbous and protuberant; mandibles acute or subbidentate; tongue long, acute; paraglossæ about one-fourth its length, acute; labial palpi two-thirds the length of the tongue, the two basal joints membranous, the basal one as long as the rest united, and tapering to its extremity, the second joint less than half the length of the first, and not wider at its base than the apex of the first joint, and tapering like that to its end, where it is acute, the third joint short, subclavate, and the terminal one-half the length of the preceding, very slender and linear; labium about one-half the length of the tongue, and at its inosculation produced obtusely in the centre; maxillæ subhastate, about the length of the tongue; maxillary palpi six-jointed, the basal joint short, robust, subclavate, the second the longest, and with the rest tapering in substance and diminishing in length to the extremity, the terminal joint being very little shorter than the preceding. Thorax ovate; prothorax inconspicuous, or distinct and angulated laterally; mesothorax glabrous, deeply punctulated; its bosses conspicuous and prominent; scutellum divided into two very prominent tubercles; post-scutellum linear, convex; metathorax with a triangular space at its base, and declining to the insertion of the abdomen; wings with three submarginal cells, and a fourth very slightly commenced, the first as long as the two following, and each of which receives a recurrent nervure about its centre; legs subspinose externally on the tibiæ, and not polliniferous; claws of tarsi small and not bifid. Abdomen oval, glabrous, shining; terminal segment triangular, with its sides ridged.
The MALE scarcely differs, excepting in sometimes being more profusely adorned with colour, but this is not always the case, the female being often the most ornate. There are very slight differences in the antennæ in the sexes, which may be readily associated together.
NATIVE SPECIES.
§ With filiform antennæ.
1. sexfasciata, Panzer, ♂ ♀. 5-6 lines. ([Plate VIII.] fig. 3 ♂ ♀.)
Schæfferella, Kirby.
connexa, Kirby.
2. Goodemana, Kirby, ♂ ♀. 4-5 lines. ([Plate VIII.] fig. 1 ♂ ♀.)
? succincta, Panzer.
3. alternata, Kirby, ♂ ♀. 4-5 lines.