264 



Transactions . — Zoology. 



Six ribs articulate with the sternum. 

 Length of sternum is 1 foot 8 inches 



1st segment being 



2nd 



3rd 



Last 



jj 



n 



55 



55 



Ziphoid cartilage 



In. 



9 

 4 

 3 

 3 



1 



Ribs — length of, 1st 



2nd 

 3rd 

 last 



5' 



55 



55 



5? 



• « « 



« « * 



Ft. 

 1 



•> 9 • 



In. 



3 



2 

 2 2 

 1 3 



20 



First rib curved and three inches wide at the angle ; others compressed 



but of moderate width. 



Spinous processes of first two dorsals feeble, the second being only 2 in. 

 high ; third, 5 in. ; fourth, 6 in. ; fifth, 6*5 in. ; sixth, 7 in. ; seventh, 7 '25 ; 

 eighth, 8 in. ; ninth, 8 in. ; tenth, 9in. ; eleventh, 9 in. ; twelfth, 9-25 in. ; 

 and the thirteenth, 10 inches. 



The longest is the sixth lumbar, which is elevated fourteen inches above 



the floor of the neural canal. 



Length of bodies of twelve dorsals 

 Length of anterior lumbars 



• • • 



• • • 



• »• 



• • • 



Ft. In. 

 2 6 



4 4 



5? 



longest lateral process, which is seventh lumbar 6 



1st chevron bone — depth 



2nd 



3rd 



4th 



5? 



55 



55 



55 



a • • 



• • • 



• • • 



• • t 



1 



1-5 



3 



5 



The first three are rounded at the tip, and from the fourth they diminish 

 in height towards the tail with an even continuous outline, but are inferior in 

 length to the corresponding neural spines ; the neural spine opposite the third 

 chevron bone being eight inches high. 



In the dorsal region the lateral processes are in the upper part of the 

 dorsal centrum. In the lumbar region they spring from the middle, and are 

 extended in a horizontal plane. In the anterior caudal region they ascend on 

 the bodies of the vertebrae ; the line of them forming an arch. The inferior 

 portion of the centrum is compressed, so as to give the appearance of a pelvic 

 cavity on each side of the column. Throughout the lumbar region there is a 

 bold hsemal ridge along the lower surface of the column. 



Scapula — triangular, posterior angle produced, with a wide acromion and 



a long narrow eoracoid. 

 concave, the rest flat. 



Length from angle 



Anterior angle rounded. 



Upper part slightly 



• • * 



• • * 



Height 



'• 



• 9 • 



• • • 



• • • 



Ft. In. 

 1 15 



1 9- 



