BAL.ENOPTERA. 51 



was 56 feet long ; the pectoral limb was about 7 feet 

 long and 22 inches in greatest breadth ; the baleen was 

 rich black ; the back and sides were black ; the belly 

 was furrowed, mottled black and white, grey, or slate- 

 coloured. The blubber on the back was 1 foot thick. 

 Skull 11 feet long in straight line; greatest breadth 

 5 feet 7 inches ; length of beak 7 feet 5 inches ; 

 breadth of base of beak 5 feet 3 inches ; length of 

 premaxilla 8 feet 7 inches ; interval between nasal 

 ends of premaxilla 1 foot ; from foramen magnum to 

 upper edge of occipital 2 feet 5| inches ; mandible 

 along outer curve 11 feet 9 inches, chord of arc 

 10 feet 7f inches. The whale was taken at Wick in 

 September 1871. See Plate V. 



26. Tympanic bones, pair of, one broken ; length 4| inches, 



breadth 2| inches ; height 2| inches ; from the Wick 

 B. sibhaldi. 



27. Baleen. Three plates from the Wick specimen. Length 



15J inches, breadth at base 5 inches. Plates black, 

 bristles brown-black. 



28. Baleen. Palatal mucous membrane showing the folds 



from which the plates of baleen grow, and the long 

 papilla which penetrate the plates. From the Wick 

 slbhdldi. Spirit preparation. 



29. Maxilla, left, superior; length 11 feet 5 inches, greatest 



breadth 2 feet 5 inches ; the outer border has the 

 characteristic contour of Sibbald's Whale. From a 

 whale stranded at Burghead, Moray Firth. The head 

 had been imbedded in a bank of sand. 



Donor — Provost Jenkins, through 



Mr William Taylor, Lhanbryde. 



30. Nasal bones, from B. slhbaldi 45 feet 2 inches long stranded 



at Aberdour. Spur-like process rudimentary ; long- 

 diameter of upper surface of each bone 11 inches, 

 greatest transverse diameter 2| inches. The whale's 

 throat was plicated ; a falcate dorsal fin was present ; 

 the back was bluish black in colour ; the sides and 

 venter silvery white; the baleen black, the longest 

 blades 2h feet ; length of pectoral limb 5 feet 8 inches ; 

 breadth of caudal fin 10 feet 8 inches. See also Nos. 

 32 and 43. 

 Aberdour, Fife, July 1858. Donor— Dr J. M'Bain, R.N. 



31. Nasal bone, left; the antero-posterior convexity of the 



upper surface is 7 inches. Donor — Mr Jos. Downs. 



