Lay out the bread slices and, using the biscuit cutter, punch out 5 bread rounds per slice. Place the rounds on a baking sheet and place the sheet in the top half of the oven for 3 minutes, until the rounds are lightly toasted. Remove from the oven and set aside.
Drain the crabmeat well and place it in a mixing bowl. Add the mayonnaise, cumin, hot sauce, lime juice, chives and salt and mix well. Mound the crab mix onto the bread rounds by the teaspoonful and garnish with a piece of chive.