Sir Everard Home on the fossil bones of an animal , &c. 25 
gentlemen who have opportunities of examining the cliffs hi 
which the bones are found, to renew their labours, and assist 
in making out all the essential parts of the skeleton. 
In the description I am to give of the bones received, I 
shall begin with one, a part of which is shown lying on the 
scapula in Mr. Bullock’s specimen, engraved in the first 
Paper ; it was then taken for -the portion of a rib accidentally 
brought there, but it is now found to have been nearly in its 
natural situation. It bears a resemblance to the clavicular 
bone in birds. In the annexed engraving (PL II. Fig. 1.) it 
is shown in its relative situation to the other bones. 
The bones of which the sternum is composed, are the 
next to be taken notice of: this part of the skeleton was 
first pointed out by my friend Mr. Buckland, who had 
visited every collection in which bones of this animal were 
known to be preserved ; he met with several specimens in 
which two flat bones were united together, and their union 
covered by a bone not unlike the upper bone of the sternum 
in quadrupeds, which made him believe that all the three 
formed part of the sternum. These different specimens, at 
his request, were sent to London for my inspection, and Mr. 
Buckland’s suggestion proves to be right. 
This discovery of the sternum destroys the analogy be- 
tween this animal and the cartilaginous fishes, which, while 
the materials were more scanty, I had been led to suspect, in 
consequence of the bones of the pectoral fin of the squalus 
having a greater degree of correspondence to the pectoral 
fin or paddle of the fossil animal, than any other bones I 
have examined. 
MDCCCXVIII. 
E 
