Combine the bread crumbs, parsley, tarragon, cayenne pepper and salt to taste. Drain the oysters and roll them in the seasoned crumbs. Place them in a single layer in a buttered baking dish.
Pour half of the butter over the oysters and broil them briefly, just until they are golden on top. Turn each oyster carefully and pour the remaining butter over them. Broil briefly until brown. Serve with lemon wedges.