DEVILKIN

This small creature resembles the mephits in physical appearance, though as far as is known it is solely a resident of the Prime Material Plane and has no allegiance to demons or (beyond its alignment) to devils. 

It is 3-ft tall—rather smaller than the mephits—and has a muscular barbed tail about 2½-ft long. Its leathery wings have a 5ft span and provide its only means of movement, its legs and arms being disproportionately small and useless for movement or combat. For purposes of aerial combat, it is maneuverability Class D.

It always attacks and never willingly breaks off a fight, striking with its tail, with its cruel barbs, for 1-6 hit points of damage.

It also has a painful howling scream which it sets up continuously in the presence of other beings. Nothing can stop this screaming other than the slaying of the beast or magically-induced silence. Conversation—even shouting—is inaudible through it, and those who do not have their ears well plugged must attempt a saving throw each melee round they are within 60-ft of the creature. If the throw is not successful, the victim cannot attack or cast or control spells, though he may defend.

Only one saving throw is required each round, no matter how many of these screaming devilkins are within range.

Note that, even if a person makes his save in one round, he must attempt it again in the next if he is to take any action.

If a magic-user or cleric or other spell-caster makes his save, he may cast a spell containing a verbal component in that round, even though the words may be inaudible because of the screaming.