Charles H. Spurgeon on Psalms 58:8

As a snail which melteth away as it goeth, literally, which goeth in melting (or slime), the noun being in the accusative as describing the nature of the action, and the allusion being to the slimy trail which the snail leaves behind it, so that it seems to waste away. Evidently this is nothing more than a poetical hyperbole, and need not be explained, therefore, as a popular error or a mistake in natural history. —J. J. Stewart Perowne, B.D., in "The Book of Psalms; a New Translation, with Introduction and Notes," 1864.