Hi Fred
Been along time. Hope your doing well. The two you listed are valid names-
Nerita incurva( von Martens.1889 )
Nerita magdalenae( Gmeli.1791 )
I don't know of a published list yet. Maybe in the future there will be.
Got any extras of these you would trade? I have neither of the two above.
What's the names of the others you found.
Jr Powers
126 Ash Street
Edgewater,Florida
32141