look in your files for the file ending .gen that ending have the mobs included.
Example:
"!Lc0_CityMap.gen" (kingnf) inside you find :
1 423 96 XMasTree 1 1 240
1 number = map , 2nd and 3rd = Coords, 4th = MobName, 5th is count, 6th not remember , 7th= Radius
Important for you is only...