Gr 4-6 In Hass' latest detective spoof, word humor runs rampant! This jest-infested collection of arthropodous case histories is chock-full of riddles, jokes and word plays which will spark the interest of intermediate readers with an appreciation for the witty remark. Written under the guise of a journalistic report on the Federal Bureau of In sect igation's course, ``Slime and Punishment,'' the book details five comic, if rather loosely connected, adventures of Incognito Mosquito. Hass' episodes satirize every type of modern-day hero (and anti-hero), including such all-time favorites as Goldfungus, Fidel Cockroach, Mikhail Baryshnimoth and even Gnat King Cole! The cases do present brief mysteries which, a la Encyclopedia Brown, readers are invited to decipher before the protagonist reveals his own clever solution. There is nothing here which even resembles great literature, but for those raised on such spoofs as ``Saturday Night Live,'' this zany tale of Incognito and his multi-legged clients is a natural. Nancy Menaldi-Scanlan, The Learning Connection, Providence, R.I.