Futanari Monstergirls of the slime and goo variety. I believe the first girl is from this comic:

A to Z Futanari Comic by Doxy

Also this one has a slime girl and a nice boob fuck:

Space Bop Futanari Comic by Tentaclemonsterchu

Related posts:

Monstergirls Futanari Twelve – Goo Girls Monstergirls Futanari Fourteen – Excellia the Cowgirl Monstergirls Futanari Five – Anasheya Monstergirls Futanari Fifteen – Excellia the Cowgirl Monstergirls Futanari Six – Anasheya Monstergirls Futanari Four – Animated Monstergirls Futanari Nineteen – Demon Monstergirls Futanari Two – Animated Monstergirls Futanari Eighteen – Demon Monstergirls Futanari Ten – Centaurs by Mikoyan Monstergirls Futanari Seventeen – Lamia Snake Girls Monstergirls Futanari Eleven – Centaur