These are mermen, I think. The one centre right looks a lot like one of those hoaxes known as feejees which consist of the upper bit of a dried monkey stitched to the lower part of a dried fish.
This is outrageous stuff. On the left a man and woman fighting- he pulls her hair, she kicks him in the nuts, in the centre a figure I'm guessing to be the Whore of Babylon but which a site I consulted describes as a sphinx, and on the right a naked man birching a naked woman whose leg is being eaten by a dog.
My favourite. A woman in bed flanked by flying monsters. I like to think she's dreaming them.
She has a da Vinci smile.