'^10 LILLJEBORG ON THE 



cei-vical vertebrae all separate. Their lateral processes are generally not strongly developed. 

 Those on the atlas are much compressed, short, and with their height greater than their length. 

 Those of axis are larger and forming a ring, but comparatively short. The succeeding cervical 

 vertebræ have not the lateral processes united into rings, and the 7th is without the lower ramus 

 or parapophysis. There is a tuberculum atlantis anticum placed at the posterior margin of the 

 inferior part of the corpus of that bone. The dorsal vertebræ are not keeled on the lower side of the 

 corpus. The lateral processes of the 7 anterior dorsal are directed forward, those of the 8th and 

 9th are dii-ected straight to the sides, and those of the 4 last ones are directed backwards, that of 

 the last very little. All the lumbosacral vertebræ are keeled on the lower side of the corpus. 

 The lateral processes of the first are directed out laterally, and those of the 2nd — 12th are 

 directed forwards. The lateral processes of the last two lumbosacral vertebræ and of the 1st caudal 

 vertebra are directed straight out. Those of the succeeding caudal vertebræ are directed back- 

 wards. The lateral processes are generally shorter than those of the Bay whale. The 1st caudal 

 vertebra had a very indistinct ridge on the lower side of the corpus. All the succeeding, which 

 have processus spinosi inferiores, have the lower side of the corpus longitudinally concave. All 

 the processus spinosi inferiores do not seem to be present. They are 11.^ The sternum is 

 missing.^ Eschricht (' loc. cit.,' p. 31) has given an outline figiu-e of the sternum of the skeleton 

 preserved at Leiden. It differs in form very much from that of the other Balænopteræ. It 

 differs less, however, from the sternum of the Giant whale than from the others. It is formed 

 like a cross, but very short, so that its width is about 1| its length. Its anterior middle part or 

 manubrium is projecting and obtuse. The lateral processes are rather large, rounded at the 

 point, and larger than either the manubrium or the posterior process, which latter is very short 

 and obtuse. The 13 pairs of ribs are all, except the 1st pair, very slender. All the anterior 

 ribs, except the 1st pair, are rather thick at the lower end, so that their section there is oval, 

 and they resemble in this the sub-fossil Swedenborgian whale from Wanga, in Westergotland 

 (Sweden), although they are narrower at the lower end than those of the latter. The 1st pair 

 of ribs are considerably wider than the others, with the upper end, as stated, forked or " biceps," 

 and the lower end rather dilated and much wider than the upper, with the extreme edge some- 

 Avhat convex. The anterior ramus or capitulum at the upper end is both longer and wider 

 than the posterior. Both ribs are in this respect perfectly similar. These ribs are, 

 according to Rudolphi, united to the lateral processes of the vertebræ by their forked end. 

 None of the ribs have the upper end united to the body of any vertebræ, but the 3rd pair 

 have a conspicuous capitulum and coUum. The 6th pair are the longest. The scapula is very 

 wide, so that its width is nearly twice as great as its length. It is small, however, in comparison 

 with the size of the animal. Its posterior edge is strongly concave. The acromion is far sepa- 

 rated from the processus coracoideus, and diverges strongly from it, so that the angle that it forms 

 with the upper part of the anterior edge of the scapula is very acute. The processus coracoideus is 



Schlegel, 57 vertebræ, 14 of which are dorsal; but Eschricht says that this skeleton has now only 

 55 vertebræ, 13 of which are dorsal, thus corresponding with the skeleton in Bergen. It appears 

 from this that the statements before us, except those of Eschricht, cannot be used with perfect 

 reliance. 



^ Rudolphi says there are 14 such processes, the posterior very small. 



^ It is also missing on the skeleton described by Rudolphi. 



