Dryinus nigrellus, sp. nov.—Femal. Length 4.25mm. Wholly black, except tarsi, part of antennæ and mandibles. Head black, finely rugulose, faintly silvery pubescent and sub-shining. Vertex impressed; front wiht a short median impressed groove above the antennæ. Cheeks roughened; mandibles pale yellow, with the tip of the teeth black' quadridentate, the outer tooth the larger and the inner one extremely minute; palpi black.