- the posterior one half is slate, except near its proximal end where the slate changes to dark gray. Baleen There are 315 plates of baleen on the left side counting all plates two inches or more in height. The first 207 plates of baleen have more or less white along their inner edges; this white is in longitudinal streaks & decreases gradually toward the posterior part of the baleen row - the remainders of the plates are all very dark [illegible] - much darker than the Finback baleen. Along the inner base of the baleen row for short length is a line of plates from two to three inches high & one half inch wide. There are white & with their white bristles white make a band about five inches high along inner base of baleen row. The bristles of its anterior fourth of the baleen row are all white - the second fourth have the tips tinged with grayish for about four inches, the third fourth have about eight inches of tips grayish & the bristles of the last fourth are almost all grayish & except for the white base line. When one first looks at the baleen of the sei whale he believes gets quite a different impression than