Pelicanidje.] osteologia avium. [Pelicaninje. 



movable, triangular process attached to it, which, I suspect, has also been the case with 

 my specimen of Plotus, but has been lost. 



Sternum similar to Plotus, but with the posterior fissures not so deep, but wider. 



Pelvis also similar, but with the foramina larger. 



Kemainder of the skeleton also similar. 



Illustration. 

 Skeleton, Plate V. L. 



Phaeton, Linn. 



Eubricauda, Bodd. 



I have only some fragments of this bird obtained from a skin. 



Cranium. The occipital bone is without the processes on each side and at the top 

 so prominent as Ploius and Graculus, but the post orbital processes are longer : the 

 whole is much broader, the lachrymal bones point outwards and downwards, and are 

 much more highly developed than in the above-mentioned genera. Only the anterior 

 portion of the palatine bones remains, which is of the same shape as among the 

 cormorants. The masseter impression is large, and the upper surface of the cranium 

 between the orbits broad. 



Wing-bones. The humerus is nearly as long as the ulna. 



Leg-bones with the divisions into three bones distinctly visible anteriorly and 

 posteriorly, all anchylosed together with a slight groove at the lower part. 



Pelican us, Linn. 



New Holland. 



Cranium. Orbital septum without any foramen ; occipital bone similar to Phaeton. 

 Palatine bones anchylosed together for their whole length, the hinder portions with a 

 strong central keel between them for one inch and a quarter of their length, arcuated 

 on its lower edge, and a quarter of an inch deep, lateral portions bending downwards, 

 broad anteriorly, and gradually narrowed towards the interarticular bones, which are 

 very strong, and broadest at their junction with the palatine bones. 



Sternum similar to Graculus. 



Pelvis very long ; ilium continued forwards, and anchylosed to the third rib and 

 all the ribs posterior to it ; a deep fissure on each side of the dorsal process of the two 

 anterior sacral vertebrae ; hinder margin very similar to the cormorants, but with a 

 blunt and broad projection instead of a spine on each side of the caudal vertebrae ; 

 foramina very large. 



Furculum similar to the cormorants, anchylosed to the sternum. 



Scapula straight, bluntly pointed at the end. 



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