bipennated

Having two wings.

bipennated insects

For the keeping the Body steady and upright in Flight, it gernally holds true, (if I mistake not,) that all bipennated Infects have Poises joined to the Body, under the hinder Part of their Wings; but such as have four Wings, or Wings with Elytra, none.

Having two shafts, blades, petals, or extensions from a single central point or body.

Very branching, branches bipennated, and very close, nearly imbricated .

Each auricula was bipennated with a single meatus externus, so that this development was not strictly preternatural; the lambs possessing, in fact, two ears only.