Egusi Melon

Can anyone tell me which melon's seeds specifically do we use for traditional egusi?

I am thinking of grinding my own (not in pestle & Mortar though, Cuisinare will do), but I am not sure what type of melon seeds to use.
I am thinking of buying the actual melon, It's summer here now so melon's should be plentiful. and drying the seeds out myself and grinding them.

I just want to see if it will taste the same as store bought egusi.

So  all you agric majors and Naija culture specialist abeg help a girl out will ya?

Is this the right melon to use?

Thanks in advance