android studio - Can't create layout-land folder in res -

I'm going through Big Nurse Rank Android Book which uses Eclipse instead of using Android Studio I am here. I'm just trying to create a layout-land folder under res . I have right-clicked res to create a new directory

In the Finder on my Mac, I see that the folder was created, though The folder does not appear in my project on Android Studio.

I had the same problem, instead of creating a new directory, using the "Create Landscape Variation" in the View Editor can do. If you do this, you will see two files with your layout (with a "(land")). When you open the project in Explorer, you will find a catalog layout within your layout.

Check out this link.