354- Dr. Riley and Mr. S. Stutchbury on Saurian 



The double head would approach it to the anterior thoracic ribs of the Crocodiles ; but the 

 rounded form and intercostal groove would connect it more nearly with the Lizards. We are 

 disposed to consider these rounded ribs as belonging to the jaw already described. 



Clavicle. 



We are inclined to consider an imperfect bone as a clavicle; it approaches 

 in form the clavicles of Iguanas. 



Coracoid.—P\ate XXIV., fig. 11. 



We have two fragments, which are undoubtedly portions of coracoids. 



The convex or sternal edge is completely destroyed, but the concave edge 

 is more perfect, and it is divided into two smaller curvatures by a long pro- 

 cess, by which it is articulated with the cartilaginous arch connecting it with 

 the T-shaped or ento-sternal element of the sternum ; the two other processes 

 arising from this edge can scarcely be traced. 



This coracoid, although so much injured, is nevertheless sufficiently preserved to show that it 

 belongs to a Saurian, having a more complicated shoulder than a Crocodile ; but it is not perfect 

 enough to enable us to determine more than that it belonged to an animal allied to the numerous 

 family of the Lizards. 



Humerus. — Plate XXX., fig. 1. la, reduced to one half the natural size. 



This specimen we consider to be a right humerus, showing the bone in a 

 pretty perfect state of preservation. 



It is remarkable from one of its sides being nearly straight, whereas the 

 other is concave. 



The articulating extremities expand to nearly three times the diameter of 

 the centre of the bone. 



It is not unlike the humerus of a Monitor, but it resembles more that of a Crocodile. 



Radius.— P\ate XXX., fig. 2. Half the natural size. 



In the middle this bone is straight, cylindrical, increasing in size at each 

 extremity, particularly at the superior one, where we notice a deep groove, 

 which we consider the articulation for the ulna ; the inferior articular surface 

 is so much injured that we cannot make out any of its characters. 

 The following are the dimensions of the bone : — 

 Length, 7 inches; 



Breadth of the superior extremity, 2 inches; 

 At its inferior extremity, 14- inches. 

 From the above characters we consider ourselves justified in considering it 

 a radius. 



