7.30 P.M. Japan T. H. K. K. 5 (skeleton taken) No. 1 Blue Whale - ♀ (pregnant) Apr. 4/10 Oshima, Shaker added. Contained a male foetus about 18 in long. Preserved. Color Body A very light whale caused by a predominance of the light gray markings. Top of head uniform slate-gray. From head backward to almost to dorsal, on the very median line of the back, as a narrow band of slate gray like head color. Rest of back & sides from corner of mouth almost wholly light gray, the light markings are interrupted occasionally by small patches of the dark color - large areas, however, are solid light gray with no suggestion of darker - Light markings turn downward to run along sides of furrows, meeting on median line below between navel and anus. On folds at their ends there be many gray-white washers; these markings become pure white on the folds on the sides of the belly and extend forward nearly to insertion of fins - they do not meet on the median line on the fields of the belly. Under right pectoral is a white patch (broken) about 2 feet wide by 2 ½ feet deep. The white markings turn upward meeting this patch, and are both on the folds and in the furrows - Between pectorals