Peel and devein shrimp, leaving tails attached.  Butterfly shrimp and arrange
in shallow pan with tails pointing upward.  Mix butter, oil, seasonings and
lemon juice, pour over shrimp.  Bake 5 minutes at 450 degrees, then broil
another 5 minutes.  Spoon a little of the pan juices over each serving.
Serves 6.