Pictured Puzzles and Word Play: A Companion to the Twentieth Century Standard Puzzle Book

Can you discover by anagram what the ape is saying to the elephant, from this descriptive sentence?

A sly tree-ape, he tries a rum telephone.

Exactly the same letters must be used.

Two words in our region of puzzledom pose,

And claim, through the passage of years

That neither the pages of Johnson disclose,

While either in Murray appears.