25. =Myxa= (_Symphysis_).

26. =Malar region= (_Regio malaris_). The outside of the base of

lower jaw; usually covered with feathers.

27. =Angle of the mouth= (_Angulus oris_). The angle formed by

the mandible and maxilla; the posterior boundary of the gape or

commissure, the tip of bill being the anterior.

A History of North American Birds; Land Birds; Vol. 3 of 3 · 第 290 / 607 题