serpents and spiders , succubi with phalluses for noses and fanged mouths for vaginas , castrated incubi with severed penises in hand , nightworms eternally devouring their own tails , a leprous king with his young virgin princess impaled on his penis , the fanged fetus of a prince raping a terminally ill queen upon her wheeled deathbed , a bloody maggot pushing a sarcophagus occupied by the corpse of a fly , a bloody caterpillar pushing a coffin filled with the cadaver of a butterfly , a demon holding the ashes of his brother in the cup of his hands , a soliloquizing philosopher on a torture rack , a winged harpy singing siren songs on a crucifix , a hydra in a multiple guillotine and his demon executioner , a thousand-armed demon being drawn and thousandthed by a thousand and two dragons , and finally satan himself , marched in a cortege along the lengths of his tongues to the rim of his lips , and then committed suicide by jumping to the hard darkness far below , where they splattered and stained the black ground with mandalas , symbols , sigils , labyrinths , and optical illusions .