from The Century Dictionary.
- Serving as a special means of recognition: applied to characteristics of animals which, when displayed, serve as recognition-marks for the guidance of other individuals of the species.
Sorry, no etymologies found.
The episematic torculus is seen in the final neuma of nobis (before the first trigon).
On the first syllable of tuum we have an episematic porrectus, followed by two puncta, while the plain porrectus appears on the first syllable of domine (third sign).
The first sign in the same neuma is also an episematic torculus followed by another long punctum.