polymyodi

from The Century Dictionary.

• In Johannes Müller's system of classification (1847), a tribe of birds of an order Insessores, including singing birds whose lower larynx is provided with the full number (five pairs) of song-muscles: thus distinguished from the tribes Trachcophonæ and Picarii of the same author. The term is nearly equivalent to Oscines or Acromyodi of later authors.