diff --git a/Source/monstdat.cpp b/Source/monstdat.cpp
index b1c226a8e..ff723365a 100644
--- a/Source/monstdat.cpp
+++ b/Source/monstdat.cpp
@@ -297,9 +297,9 @@ const _monster_id MonstConvTbl[] = {
 	MT_ARACHNON,
 	MT_FELLTWIN,
 	MT_HORKSPWN,
-	MT_STINGER,
-	MT_PSYCHORB,
-	MT_ARACHNON,
+	MT_VENMTAIL,
+	MT_NECRMORB,
+	MT_SPIDLORD,
 	MT_LASHWORM,
 	MT_TORCHANT,
 	MT_HORKDMN,
@@ -310,8 +310,8 @@ const _monster_id MonstConvTbl[] = {
 	MT_SKLWING,
 	MT_LICH,
 	MT_CRYPTDMN,
-	MT_FIREBAT,
-	MT_SKLWING,
+	MT_HELLBAT,
+	MT_BONEDEMN,
 	MT_LICH,
 	MT_BICLOPS,
 	MT_FLESTHNG,