(Chapter 21) Footnote 42:

Properly korakoeidh/j, the initial vowel being short. The 1555 edition adds that it is “concave on its lower surface and notably smooth so as not to impede the function and insertion of the muscle [m. subscapularis] that rotates the humerus forward.” Also, the digression on Galen is left out, and the narrative resumes with the description of the lower surface.