31 



terior orbital process, forming part of the rim of the orbit ; and be- 

 fore the OS quadratum there projects forwards and downwards a pro- 

 cess of the teniporal bone, analogous, I suspect, to the zygomatic 

 process J for the long bone stretching to the upper mandible from the 

 OS quadratum, which in the present bird is remarkably slender, cannot 

 be called a true zygoma. Between these two processes is the de- 

 pression for the temporal muscle. The nostrils are large, wide, ovoid, 

 and open. 



" In the lower jaw there is nothing remarkable. It may be ob- 

 served, however, that a slit, or long foramen, marks the union of the 

 basal to the anterior portion of the bone, instead of a simple suture. 

 The coronoid process is very small. 



" The vertebra; are short and stout, and resemble more those of a 

 Gallinaceous Bird than of a Crane; in fact, they differ little from those 

 of the crested Curassow. Their number is as follows : 



Cervical 13 



Dorsal 7 



Sacral 12 apparently. 



Caudal 8 



But that a rib arises on each side from it, the last or 7th dorsal ver- 

 tebra is so completely consolidated to the sacrum that it cannot be 

 distinguished from that portion of the column ; — this is also the case, 

 in the black-crested Curassow, with the last dorsal vertebra; and in the 

 Stanley Crane, with the last two. 



" The sternum differs considerably in figure from that of the Stan- 

 ley Crane. For, independently of the absence of a channel in the an- 

 terior edge of the keel for the reception of the trachea, the keel is 

 neither so deep, nor is its anterior ape.v even in contact with the 

 point of the os furcatum, (there being a firm consolidation in the 

 Stanley Crane,) while its posterior edge is narrow and prolonged as 

 in Gallinaceous Birds; whereas in the Stanley Crane it is broad and 

 squared. The total length of the sternum is 4^ inches : the greatest 

 depth of the keel \\. The keel does not arise abruptly from the body 

 of the sternum, but the latter merges gradually into it. 



" The OS furcatum is very slender and depressed towards the cora- 

 coid bones ; its figure is triangular, and the apex does not reach the 

 keel of the sternum by nearly half an inch. The Cariama is a bird of 

 feeble powers of flight, very different from the Crane in this respect, 

 and exhibiting a corresponding modification of the osseous parts con- 

 nected with aerial progression. 



" The ribs, seven .in number on each side, are short and strong; the 

 first two are false : in the Stanley Crane I can only find one false rib 

 on each side ; while all the rest are long, somewhat slender, and ex- 

 tend nearly 2 inches beyond the posterior margin of the sternum : 

 whereas in" the Cariama, the posterior sternal apex extends beyond 



