208 



TEE BATH OOLITE PERIOD. 



CHAP. 



as a ' thin slightly-bent plate, of equal breadth except where it is 

 expanded and thickened towards the humeral end, but thinning off 

 again towards the articular margin/ 



There are in reality two forms of scapulae in the Oxford collection 

 placed in the megalosaurian series, one of which is anchylosed to 

 the coracoid, the other not so. They differ enough to be certainly 



Diagram LXIII. Megalosaurus. Scale one-tenth of nature. 

 The left aspect of the shoulder girdle is here restored in outline from specimens in 

 the Oxford Museum, which are complete except in regard to the lower end of the 

 humerus. It will be remarked how bird-like in the general arrangement and the forms 

 of the bones is the humero-scapular structure, and specially how closely it resembles 

 Apteryx. 



I. Scapula. 2. Coracoid. 3. Humerus. 



referable to different species of animals, the second mentioned being 

 of larger size. In the first the thin broad blade, thickest behind, 

 has subparallel curved, rather undulated edges, is a little bent on 

 itself, somewhat contracted and thickened toward the lower part to 

 a kind of neck, from whence expanding to nearly twice that con- 

 tracted width, it is rounded in front, concave retrally, and undulated 



