placed too high on the side. The color of Scammon's specimen is given as "entirely black" - this is not the case in my individual; its color is as follows: The color of the entire upper parts is black with the exception of an area immediately behind the dorsal fin which is lighter gray. This gray area, triangular, has roughly the shape of a trapezoid, its apex directed backward toward the flukes, central and its longitudinal axis being the ridge of the back. The edges of this light area grade imperceptably into the black of the back, excepting at the point where the transition is more abrupt. The ant. part. length of this gray area is 600 mil. Its furthest downward extent transversely from the ridge of its back is 200 mil. on either side. There is a small dash of gray 60 mil. long by 10 mil. wide, just below the ant. insertion of the flukes on the left side only. The dorsal fin is faintly tinged with grayish - almost imperceptible. The lower parts are black except as follows: From the navel a very narrow, purplish-gray line, starting as nothing, runs 4 in the exact