Hypotenuses: in Odonata; the simple or broken cross-vein between media 4, and cubitus 1, forming outer boundary of triangle.
Wings very long, and very narrow, the humerus and cubitus extremely elongated; first quill longest.
The cubitus or Ulna is endu'd with two sorts of Motions, viz.
A coronet or semicoronet of spines, observable at the apex of the cubitus or Tibia of some insects.
When this angle is increased, the attitude is described as one of cubitus valgus.