Lava Slime

The Lava Slime was added in the 1.0.5 patch and spawns in the underworld. It gives of an orange glow like Molten armor. When killed it melts into lava, which can do a serious amount of damage to the player if he/she does not get out of the way. It also does not receive damage from lava; in fact it floats in it like other slimes float in water. It is suggested to kill Lava slimes with a ranged weapon.