THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC, 167 
looks uniform gray on the head, coarsely mottled with lighter from the shoulder to 
the middle of the length, thence practically all ight gray to the flukes. The median 
line below, from the navel to the clitoris, is plain gray. Sides of pudendum below 
the mammary slits and around the anus nearly pure white. Underside and an- 
terior margin of pectoral very pure white. The fore-and-aft curved lines of alter- 
nately gray and white very distinct on the underside of the flukes. Dorsal fin with 
a nearly pure white anterior basal area, with curved vertical narrow gray lines. 
(See pl. 14, fig. 1; pl. 18, figs. 3 and 4.) 
No. 10. Male. June 27,1901. A light individual. The back nearly all 
light gray, with dark blotches opposite the tip of the pectoral, opposite the anus, 
and adjoining the base of the flukes. Though light, the color is not white on the 
flukes, nor on the lower surface of the body, except on the ridges, and a dash or two 
about the penis and anus. The amount of white on the ridges very considerable. 
Median line between navel and anus mostly dark gray. But little light gray on 
the underside of the flukes. Pectorals blotched on the outside like the flanks 
with light gray, and the tips with a mass of reticulated dark lines below. 
No. 11. Male. June 27, 1901. Total length, 71 ft.6in. A moderately light 
individual. Flanks mottled dark and light as in other specimens. From the 
dorsal fin half-way to the flukes the sides are nearly all light gray in continuous 
masses. The remainder of the sides toward the flukes nearly all dark gray. 
Flukes quite white underneath, with the usual fore-and-aft gray curved lines. 
A dark patch on the anterior margin of the pectoral just proximal to the middle 
of its length (perhaps due to injury). Sundry dark marks at the tip below. White 
dashes around the anus, penis orifice, and navel. Median line, from the navel to 
the penis orifice and around right|side of the latter, dark gray, without lght 
blotches. More posteriorly, the light blotches of the flanks cross the median line. 
(See pl. 20, fig. 3.) 
No. 12. Female. June 28, 1901. Total length, 66 ft.6in. About medium 
as regards color. Light spots run forward to the corner of the mouth. They 
do not extend to the eye, but stop about midway between it and the ear. On 
the top of the head, however, they extend forward to the line of the ear. The 
proximal half of the pectorals externally has several large light blotches, but they 
are not conspicuous. ‘Tip of pectorals with very little white externally. 
No. 18. Male. June 28, 1901. Total length, 65 ft. 11 in. Very few 
white spots on the abdominal ridges, which are almost entirely plain gray, except 
for an indistinct mottling. A broad inferior median band of plain dark gray from 
the navel to the anus, with only a few dashes of light gray. The light spots in 
this whale show a strong tendency to form whorls, especially on the flanks, where 
they nearly all assume this character. Pectorals externally all dark gray, with but 
one or two small light blotches about an inch in diameter at the posterior margin, 
where are also some vermiform lightish marks. 
No. 14. Female. June 29, 1901. Total length, 77 ft. 2 in. A very 
light whale. A great deal of white on the abdominal ridges. The region under 
the base of the pectorals nearly solid white. The white spots on the ridges extend 
