Eyes eight on each side, on the top of the head. Legs long and slender. Saltatory appendage with a supplementary segment. Smynthurus. Antennæ four-jointed, bent at the insertion of the fourth, which is nearly as long as the other three, and appears to consist of many small segments. No conspicuous dorsal tubercles. Dicyrtoma. Antennæ eight-jointed, five before, three after the bend.