Black Bean-Corn Fritters

1 1⁄2 cups flour
1⁄2 cup yellow cornmeal
1 tbsp. baking powder
1 tbsp. sugar
2 tsp. chili powder
1 1⁄2 tsp. ground cumin
2 large eggs, lightly beaten
1 cup milk
2 tbsp. fresh chives, snipped
1 cup corn kernels, blanched
1 red bell pepper, diced, blanched
1 10-oz. can black beans
40 shrimp, peeled, deveined
2 cups red pepper mayonnaise
Fresh cilantro, as needed
Lime wedges, for garnish