Akbitana in Corinthia?

I believe that's a map misprint. If you look at the Map of Hyborea in the Downloads section for Conan on this website, you'll see that Akbitana has been moved to central Shem. I had the same misgivings when I noticed that too.
IIRC, Iit's an error on the map and it has been corrected on the Hyboria map you can get from the free downloads section.
Akbitana has now moved to its correct location, as will be seen in the spanking new map in Road of Kings.