That's some Demonology stuff on third panel of page 18. Those symbols are the seals of the major demons.
So I looked them up... and then looked them up again because reading the digital copy of Goetia I downloaded is hell (pun not intended) and it turns out I got some wrong because I read the numbers wrong because they are tiny and blurry. So I found a better online list.
So the top one is Bathin, knows the properties of plants and stones and transports people across countries. His appearance is a serpent-tailed muscular man riding a pale horse.
Behind that is likely Andromalius. He brings back thieves and stolen goods and punishes the such and finds hidden treasure, wickedness, and dishonesty. He appears as a man holding a large serpent in his hand.
Next is Eligos who discovers hidden things, knows the future of wars. He carries a lance and a serpent.
Besides that to the right is Orias, he knows astrology super well and can metamorphose a man into any shape

He's a lion with a serpent's tail and riding on a buff horse and holds two serpents hissing.
I am ssssenssssing a theme here. 🐍