TEXT: Monster Manual errata
  first published in The Dragon Magazine #36 (Vol. IV, No 9, March 1980)
  Correction 5-6A:
  Magic Resistance: “Thus a magic resistance of 95% means that a 10th
  level magic-user has no possibility of affecting the monster with a spell,
  while a 12th level magic-user has a 10% chance.”
  Addition 9A:
  Beetle, Giant.  Statistics for the  Stag beetle:
  FREQUENCY: Common
  NO. APPEARING:  2-12
  ARMOR CLASS:  3
  MOVE: 6”
  HIT DICE:  7
  % N LAIR:  Nil
  TREASURE TYPE:  Nil
  NO. OF Al-TACKS:  3
  DAMAGE/ATTACK: 4-16/1-10/1-10
  SPECIAL ATTACKS:  Nil
  SPECIAL DEFENSES:  Nil
  MAGIC RESISTANCE:  Standard
  INTELLIGENCE: Non-
  ALIGNMENT: Neutral
  SIZE: L ( 10’ long)
  PSIONIC ABILITY:  Nil
  Attack/Defense Modes:  Nil
  Correction 9B:
  Bombardier Beetle:  Cross out the second and third lines. They should read,
  “This beetle is usually found in wooded areas above ground. It feeds on
  offal and carrion primarily, gathering huge heaps of such material in
  which to lay its eggs. If this beetle is attacked or disturbed there is a 50%
  chance each melee round that it will turn its rear towards . . . ” etc. The
  remainder of the paragraph is correct.
  Addition 10A:
  Beholder: MAGIC RESISTANCE: Special. This refers to the monster
  eleventh eye. The Anti-Magic Ray can be used to protect the Beholder
  from magic of all forms.
  Correction 11A:
  Warthog: DAMAGE/ATTACK: 2-8/2-8.
  Correction 11B:
  Brownie: ARMOR CLASS: 3.
  
  Correction 12A:
  Bull: NUMBER APPEARING:  1-20.
  Addition 17A:
  Demon, Orcus: The information about his tail should read, “Additionally
  his tail has a virulent poison sting (-4 on all saving throws against poison),
  and his tail strikes with an 18 dexterity which does 2-8 hit points each time
  it hits.”
  Correction 18A:
  Demon, Succubus: ARMOR CLASS should be 0.
  Addition 188:
  Demon, Type I: The name (Vrock) should be placed after Type I.
  Addition 18C:
  Demon, Type II: The name (Hezrou) should follow Type II.
  Addition 18D:
  Demon, Type III: The name (Glabrezu) should follow Type III. The
  DAMAGE/ATTACK should read 2-12/2-12/1-3/1-3/2-5.
  Correction 19A:
  Demon, Type IV: The ARMOR CLASS should be -1. The sentence concern-
  ing special abilities should read, “They have these other abilities which
  can be employed one per melee round . . . ”
  Correction 19B:
  Demon, Type V: The ARMOR CLASS should be -7/-5.
  Correction 19C:
  Demon, Type VI: The ARMOR CLASS should read -2.
  Correction 21 A:
  Devil, Boalzebul: NO. OF ATTACKS: 1 bite
  DAMAGE/ATTACK: 2-12 + poison.
  Correction 22A:
  Devil, Geryon: SPECIAL DEFENSES: + 2 or better  weapon to hit.
  Correction 22B:
  Devil, Horned: ARMOR CLASS: -5
  HIT DICE: 5 + 5
  SPECIAL DEFENSES: + 1 or better weapon to hit.
  Correction 22C:
  Devil, Ice: ARMOR CLASS: -4
  SPECIAL DEFENSES: + 2 or  better weapon to hit.
  
  Correction 23A:
  Devil, Pit Fiend: ARMOR CLASS: -3
  SPECIAL DEFENSES: + 2 or better weapon to hit.
  Correction 25A:
  Dinosaur, Ceratoraurus: INTELLIGENCE: Non-
  ALIGNMENT: Neutral
  Correction 27A:
  Dinosaur, Stegosaurus: ARMOR CLASS: 2/5.
  Correction 27B:
  Dinosaur, Teratosaurus: NO. OF ATTACKS: 3
  DAMAGE/ATTACK: 1-3/1-3/3-18
  Correction 28A:
  Dinosaur, Triceratops: DAMAGE/ATTACK: 1-8/1-12/1-12
  Correction 28B:
  Displacer Beast: DAMAGE/ATTACK: 2-8/2-8
  Correction 29A:
  Dragon: The second sentence of the introduction should read, “Two sorts
  of dragons (the Chromatic Dragon and the Platinum Dragon) are singular
  individuals, and there are no others of their type.”
  Correction 32A:
  Dragon, Chromatic: DAMAGE/ATTACK: 2-16/3-18/2-20/3-24/3-30/1-6
  In the 3rd paragraph, the second sentence should be changed to say, “If
  her body takes more than 48 points of damage she is dispelled to her own
  plane of Hell (or slain if fought in Hell) just as any other devil.”
  Correction 33A:
  Dragon, Gold: The description of attack modes should read, “The attack of
  a gold dragon can be a claw/claw/bite routine or one of two breath
  weapons — fire in a 9” X 3” cone, or chlorine gas in a 5” × 4” × 3”
  cloud.”
  Correction 36A:
  Eagle, Giant: The last sentence should read, “They can carry up to 2000
  gold pieces at half speed.”
  Correction 39A:
  Elf: Strike the asterisk and footnote found in the statistics so that the follow-
  ing listings read, “PSIONIC ABILITY: Nil
  Attack/Defense Modes: Nil.”
  Correction 40A:
  Ettin: DAMAGE/ATTACK: 2-16/3-18.
  
  Correction 41A:
  Frog, Giant: SIZE: S to M (6’).
  Correction 41B:
  Frog, Killer: HIT DICE: 1 + 4.
  Correction 44A:
  Giant: The sentence about giant strength found in the introduction should
  read, “Ail giants are very strong, with strengths ranging from 19 to 24 as
  compared to humans.”
  Correction 44B:
  Giant, Cloud: ARMOR CLASS: 2.
  Correction 44C: 
  Giant, Fire: ARMOR CLASS: 3.
  Correction 45A:
  Giant, Stone: ARMOR CLASS: 0.
  Correction 45B:
  Giant, Storm: ARMOR CLASS: 1.
  Correction 46A:
  Gnome: HIT DICE: 1
  Addition 47A:
  Goblin: TREASURE IN LAIR: C.
  Correction 47B:
  Golem, Clay: The sentence concerning the spells required should read, “It
  requires a resurrection spell, an  animate objects  spell, a commune spell, a
  prayer spell, and a bless spell.”
  Correction 48A:
  Golem, Flesh: MOVE: 9”.
  Correction 49A:
  Gray Ooze: The final sentence should read, “After loosing its psionic at-
  tack the gray ooze can be psionically attacked.”
  Correction 51A:
  Hell Hound: DAMAGE/ATTACK: 1-10.
  Correction 54A:
  Intellect Devourer: HIT DICE: 6 + 6
  
  Correction 55A:
  Ixitxachitl: The description of leaders should read, “If more than 50 are
  encountered there will be these additional ixitxachitl with the group: a
  leader with 8th level clerical spell ability and quadruple normal hit dice,
  two guards with 6th level clerical spell ability and triple normal hit dice.”
  Correction 60A:
  Leopard: SPECIAL ATTACKS: Rear claws for 1-4/1-4
  SPECIAL DEFENSES: Surprised only on a 1
  MAGIC RESISTANCE: Standard.
  Correction 62A:
  Lurker Above: The sentence describing the monster’s special attacks
  should read, “This constriction causes 1-6 points of damage per round, and
  the victims will smother in 2-5 rounds in any event unless they kill the
  lurker’ and break free.”
  Correction 63A:
  Wererat: SIZE: S-M
  Correction 73A:
  Naga, Spirit: In the section describing the spirit naga, the sentence des-
  cribing its magical attack should read, “In addition to a poisonous bite for
  1-3 hit points damage, these monsters can permanently charm (as a charm
  spell) any humanoid creature that meets the gaze of these monsters unless
  a saving throw vs. paralyzation is made.”
  Correction 75A:
  Ogre: The sentence describing leaders should read, “If 11 or more ogres
  are encountered, there will be one who is a leader (armor class 3, 30-33
  hit points, attacking as a 7 hit dice creature and from 2-12 hit points
  Correction 76A:
  Orc: DAMAGE/ATTACK: 1-8 or by weapon type
  Fourth paragraph (orc lairs are underground . . . etc.), third sentence
  should read, “A chief and 5-30 bodyguards (AC 4, 13-16 hit points, attack 
  as monsters with 4 hit dice)."
  Correction 78A:
  Piercer: MAGIC RESISTANCE: Standard.
  Correction 79A:
  Portuguese Man-O-War: MAGIC RESISTANCE: Standard.
  Correction 83A:
  Roper: In the section describing the roper’s special attacks, the sentence
  giving the chances for breaking free should read, “The chance for break-
  ing a strand is the same as opening a door, but every round the roper wiII
  drag its victim 10’ closer.”
  
  Correction 838:
  Rust Monster:  NO. OF ATTACKS: 2
  DAMAGE/ATTACK is still Nil. This monster eats only metal
  objects , it will not physically harm an adventurer.
  Correction 92A:
  Stirge: The first sentence of the second paragraph should read, “ Stirges
  attack as if they were creatures were of 4-hit dice rather than 1 + 1"
  Correction 94A:
  Titan: MOVE: 21” or 15”
  The larger titans move slower than the lesser ones.
  Correction 95A:
  Toad, Giant: MOVE: 6” + 6” hop
  Correction 95B:
  Toad, Poisonous: MOVE: 6” + 6” hop
  Correction 97A:
  Troll: DAMAGE/ATTACK: 5-8/5-8/2-12
  The explanation of regeneration in the second paragraph should read,
  “Regeneration repairs damage at 3 hit points per round; this regeneration
  Includes the rebonding of severed members.”
  Correction 98A:
  Umber Hulk: HIT DICE: 8 + 8
  Correction 99A:
  Vampire: In the seventh paragraph describing how a vampire may be
  slain, the third sentence should read, “The vampire loses one-third of its
  hit points per round of immersion.”
  Correction 100A:
  Wight: In the second paragraph, cross out the portion of the third sentence
  that reads, “Plus the hit die for the level drained.” The sentence should
  read, “The creature so hit, loses both the hit points of damage scored (1-4),
  plus a level of ability, i.e., a 9th level character struck by a wight becomes
  8th level."
  Correction 101A:
  Wolf, Dire: SIZE: M (I)
  Correction 102A:
  Wraith: Cross out, “% IN DICE: 5 + 3.”
  Correction 102B:
  Xorn: NO. OF ATTACKS: 4.
  
  Correction 103A:
  Yeti: The second paragraph, last sentence, should read, “For each level
  above first add 5% chance of spotting a Yeti at normal distance, i.e. a 2nd
  level character has a 5% chance of spotting one.”
  
SOURCE: textdata/thevault/Dungeons & Dragons [multi]/1st Edition (ODD, D&D Basic, AD&D)/1st Edition/Core/Monster Manual - Errata.pdf