Theres some non futas mixed in with these lamia monstergirls. Good futanari is hard to find sometimes, the other post has more.

Oh and i found one great snake girl comic by Mikoyan:

I will Love You Equal to the Number of Scales that I Have! Futanari Hentai Manga by Mikoyan

Monstergirls of the futa snake,naga and lamia kind, plus the one medusa.

Excellia the futanari horned cowgirl/minotaur for the monstergirl tag.

Excellia is a cowgirl or a minotaur from Corruption of Champions and im not clear on what that is exactly but it spawned this great art. Some are futa some are not, so theres enough for two posts.

More of those animations up ahead in the Monstergirls tag.