15AL.-ENOPTERA. 



41 



Firth to Kirkcaldy, where it was flensed. The 

 animal was described by Professor Sir Wni. Turner, 

 Proc. Roy. tSoc. Edin., December 1869, and more 

 full}^ in the Transactions, vol. xxvi., 1870. The 

 bones of the skeleton in the Museum were presented 

 by the Science and Art Department. 



The fcetus, a male, was 19 feet 6 inches long; the 

 girth iDehind the dorsal fin was 3 feet Q inches, the 

 height of that fin was Qh inches, and the length of 

 the pectoral limb was 3 feet 7 inches. Figure 

 below shows the dorsum of the beak, its curved 

 convex outline, the dorsal mesial ridge, and the 

 form and direction of the blowholes.] 



3. Mandible of Sibbald's Rorqual, Longniddry ; the halves 

 are not fused at the s}'mphysis. Length along the 

 convexity is 21 feet 2 inches, and in a straight line 

 19 feet 5 inches. Coronoid process pointed ; girth in 

 front of coronoid 4 feet 2.^ inches. The condyl did 

 not articulate directly with the temporal, but was 

 attached to it through a cylindriform column about 

 3 feet in vertical and 2 feet 3 inches in transverse 

 diameter, which was milk-white in colour, and had a 

 reticulated fibrous structure. 



In the fidns a similar cylindriform fibrous mass, 

 but only 5 inches in vertical and 5 inches in trans- 

 verse diameter, was present ; by its ends it was con- 

 tinuous with the periosteum enclosing the condyl of 



