UML14 — Diagrams, Diagrams, Diagrams ... UML 2 Superstructure issue

While trying understand the jungle of diagrams offered by UML I
probably
discovered an inconsistency within the most recent Superstructure
document.

Page A-546 shows a class digram giving a taxonomy of structure and
behavior diagrams. The figure (numbered A-5) is accompanied with some
descriptive text at the same page.
The diagrams includes a box (class) for a diagram called the
"collaboration diagram" which is not mentioned in the document set
elsewhere. But the text mentiones a "communication diagram" which is
completely missing in the figure.

Additionally, shouldn't the "protocol state machine" be shown as a
specialization of the "state machine diagram"?

duplicate