FREQUENCY: Rare
FREQUENCY: Rare ([Cold Wilderness Mountains])
FREQUENCY: Rare ([Cold Wilderness Hills])

FREQUENCY: Rare ([Temperate Wilderness Mountains])
FREQUENCY: Very rare ([Temperate Wilderness Hills])

FREQUENCY: Rare ([Tropical Wilderness Mountains])
FREQUENCY: Very rare ([Tropical Wilderness Hills])

FREQUENCY: Uncommon ([Dungeon Level V])

NO. APPEARING: 2-8 <(20% to be found with gargoyles, either as masters or leaders: IV)>
ARMOR CLASS: <+1:> 2 <weapon vs. AC modifiers can be applied>
MOVE: 6" / 12" (MC: C)
HIT DICE: 6
% IN LAIR: 30%
TREASURE TYPE: Individuals [Q]; in lair [C]
NO. OF ATTACKS: 4
DAMAGE/ATTACK: 1-6/1-6/2-8/2-8 <(claw/claw/horns/bite)> || 13
SPECIAL ATTACKS: [SB]
SPECIAL DEFENSES: +1 or better weapon to hit <edit>
MAGIC RESISTANCE: Standard
INTELLIGENCE: Low
ALIGNMENT: Chaotic evil
SIZE: M
LEVEL/X.P. VALUE: V | 350 + 6 <(avg  530)>

A marlgoyle is a particularly horrid form of gargoyle found principally in natural caves && caverns.
The creature's substance is so like stone that there is an 80% probability it will be undetected when lurking against it,
and one can thus often surprise opponents.
Attack is by 2 claws,
a pair of horns,
and a bite with stony fangs.
Only magick weapons equal to or better than +1 will harm a marlgoyle. <edit>
The low intelligence of this creature does not prevent it from gathering valuable items,
particularly those magical sorts which could harm it.
The language of these creatures is similar to that of gargoyles, <spelling corrected> <add to language table in the DMG>
and they can speak the tongue of the latter monsters well enough.
Marlgoyles are sometimes (20%) found with their lesser kin,
gargoyles,
either as masters || leaders.

<1>
<note the spelling>