Or is this perhaps a product of the over-excited brain of a middle-aged and somewhat disparaged poet, when he finds that his ignored, his arcane, his deviously perspicuous meanings, which he thought not meanings, since no one appeared able to understand them, had after all one clear-eyed and amused reader and judge?
*
perspicuous adj [L perspicuus transparent, perspicuous, fr. perspicere] 1586 : plain to the understanding especially because of clarity and precision of presentation.
perspicacious adj [L perspicac-, perspicax, fr. perspicere] (1640) : of acute mental vision or discernment : KEEN
I tend to confuse the two words, so I find 'deviously perspicuous' a deviously perspicuous way to phrase itself.