Yeah -- CC did make a series of kits with pre-cut soundholes, and that may indeed be what you encountered
This didn't go from my phone to here, so trying again:
No special "dulcimer name" for any dulcimer soundholes that I know of ('f-holes' have been called that by violin folks for hundreds of years); unless the builder called these "Jonathan Livingstons".
'Seagull' sounds good to me.
updated by @ken-hulme: 07/27/17 06:47:56AM