THE WHALEBONE WHALES OF THE WESTERN NORTH ATLANTIC. 123 



No. 7. Female. Length, 50 ft. 7 in. General color dark. Tii) of upper jaw 

 white iufei-iorly, with a dark median line. Right mandible entirely white. Left 

 mandible dark gray, the anterior boundary of which runs into the fourth left furrow. 

 Gray comes down on the I'idges under the left pectoral to within twelve ridges of 

 the median line. Opposite the navel its inferior border is 32^ in. above the same ; 

 opposite the anus it is 16 in. above the same. Inferior margin of caudal peduncle 

 all white, with only a trace of the post-anal gray niai'k. (See pi. 8 fig. 1 • [)1 9 

 fig. 1; pi. 11, fig. 4.) 



No. 8. Female. Length, 57 ft. 6 in. General color very dark. Below the 

 left pectoi'al the gray runs across the breast to the third lidge above the median 

 line. On the right side the gray runs across only a few ridges below the i-oot of 

 the right pectoral, and below the exti'emity of the pectoral, when laid back, only four- 

 teen ridges. The right breast, throat, and belly, therefore, are nearly all white. Left 

 mandible very dark gray, as is the back. On the sides the gray comes down 

 within 14 in. of the anus. A distinct inferior post-anal gray mark on the caudal 

 peduncle, and the gray comes down so low that at the insertion of the flukes white 

 is almost shut out out from its inferior edge. 



No. 9. Male. Length, 59 ft. 1 in. General color dark. The gray color 

 under the pectoral on the left side comes down to within one lidge above the 

 median line. Behind this the white of the belly I'uns up antero-snpeiioi'ly to the 

 axilla. Then the gray comes down again to within eight I'idges of the median line. 

 Opposite the anus the gray of the sides comes down to a line 15 in. above the 

 median line. Post-anal gray mark distinct. (See pi. 8, fig. 3 ; pi. 10, figs. 2 and 5.) 



No. 10. Male. Length, 53 ft. 9 in. A very light individual, especially on the 

 right side. On that side there is no gray on the ridges in front of the pectoral. 



The post-pectoral gray area comes down only to within seventeen ridges above 

 the median line. The post-anal gray mark is distinct. 



No. 11. Female. Length, 70 ft. 8 in. General color dark. The gray of 

 the left side comes down across the median line at a point about midway between 

 the line of the navel and the tip of the pectoral, when laid back, and runs up on the 

 right side on seven ridges, there meeting the dark furrows, and thus causing 

 the appearance of a continuous dark band across the belly. Twenty-three furrows 

 downward from the root of the right pectoi-al are gray. All the central part of 

 the throat and breast from the mandible backward for 31 feet is white, botli ridges 

 and furrows. White of the inferior mai-gin of the caudal peduncle veiy much 

 restricted and clouded with gray streaks. Above the anus the gray of the sides 

 comes down to within 17 inches. Post-anal gray mark very distinct. 



No. 12. Male. Length, 54 ft. 6 in. General color very light. No gi-ay on 

 the right side of the belly. On the left side it comes down only to within sixteen 

 ridges from the median line. The anterior boundary of the gray of the left mandible 

 joins the seventh left furrow. The inferior boundary of the gray of the sides is 16 in. 

 above the anus. The post-anal gray mark is very distinct and has a white line 

 dividing it into two inferiorly. (See pi. 11, fig. 1.) 



No. 13. Male. Length, 61ft. 2 in. General color very dark. The gray of 



