Preheat oven to 375 degrees.
Whisk together sugar, flour, and cornmeal in a large bowl.
Add eggs, melted butter, milk, lemon rind, lemon juice, and salt and whisk well.
Pour into pie shell.
Bake for 15 minutes.
Reduce oven temperature to 300 degrees and bake for another 40 to 45 minutes.
Pie will still be failry jiggly but will firm up as it cools.
Refrigerate until ready to serve.