Ryle is an ‘ordinary language’ philosopher. The first (Ryle on perception) seems thoroughly kerfluffled with semantic categorizations of words. The second (Ryle on imagination) goes a little farther, declaring that language that is appropriate for talk about perceptions derived from the environment is not licensed for imagined perceptions. He talks of neural signals in the brain, and shows the folly of supposing that replicas or images or representations of the world reside in the brain (and an infinite regress of homunculi or ‘ghosts’ to perceive them).
The error is to place the difficulty between perception and language, when it is between perception (signal) and perception (experience), and language as always stands off to the side.