Monthly Serial Novel Magazines?

DeeryQueen asks: "I enjoy reading both regular/text novels and Japanese graphic novels (manga), but while there are a few magazines serializing manga (a few hundred pages each month, consisting of a chapter each from many different graphic novels) with which I am familiar (such as Shonen Jump and Shojo Beat), I don't know where to start looking for US magazines which serialize text novels using this formula. I read all genres. Any recommendations?"