266 ORGANIC REMAINS. 



natural position, behind the cranium, with which it is connected 

 by a singular bone, corresponding with the atlas in quadrupeds. 

 Several of the spinous processes are seen attached to the vertebrae 

 behind the cranium, but thrown over to one side. These processes 

 are not parts of the vertebrae, but distinct bones attached to them; 

 and being easily separated, they are often wanting, or found detached. 

 The canal for the spinal marrow is formed by a cleft passing through 

 their bases, close to the vertebrae. The small processes of the tail 

 vertebrae in No. 1, are very distinctly seen in the specimen, but too 

 minute to appear in the figure. Their cross section resembles a spur. 

 No paddle was imbedded with No. 3 ; but the separate paddle. 

 No. 4, was found near the same spot, and may have belonged to it. 

 It exceeds seventeen inches in length, including the handle ; and has 

 been some inches longer. It has also lost part of its breadth. The 

 arrangement of the small bones is somewhat obscured by portions of 

 pyrites ; and may be seen more distinctly in the imperfect fins of No. 

 2. Two bones are joined to the handle, three succeed, and are fol- 

 lowed by four; and thus the rows, or phalanges, increase from the 

 handle outwards, till they become seven or eight in some specimens ; 

 after Avhich they again decrease, towards the end of the fin; the bones 

 all along diminishing in size, according to their distance from the 

 handle. The rows, and consequently the bones, appear to be most 

 numerous in the larger and older animals. In the last specimen 

 figured by Sir Everard Home, there is a fin composed of above two 

 hundred little bones, forming eight phalanges in the middle of the 

 fin. The largest pair of paddles found with any of our specimens, 

 may be seen in PL XVI, Fig. 1. They are about the same size as No. 

 4, PI. XV, has been; but are broader, having four phalanges. They 

 are nearly in their proper position, as pectoral fins ; but the skeleton 

 to which they belong is very imperfect; the head, which is a yard long, 

 being mutilated on one side, and the spine &c. greatly dislocated and 



