OSTEOLOGIA AVIUM. 



Numbering of the Vertebra* and Ribs in 



BlPOSITORES. 







Cervical. 



Dorsal. 



Sacral. 



Caudal. 



True ribs. 



False ribs. 



Goura coronata 

 Champelia passerina 

 Columba palumbus . 



magnifica . 



capistrata . 



Ptilonopus melanocephala 

 Treron aromatica 



13 

 12 

 13 

 12 

 12 

 12 

 11 



6 

 6 

 6 

 6 

 6 

 6 

 5 



13 



12 

 13 

 12 

 12 

 12 



6 



7 

 6 

 6 

 6 



4 

 4 

 o 

 4 

 4 

 4 

 5 



2 

 2 

 1 

 3 

 3 

 2 

 1 



Remarks on Bipositores. 



The great breadth of the pelvis, the depth of the sternal keel, the process on the 

 interarticular bone, and the absence of any process at the junction of the rami of the 

 furculum, will at once distinguish this order from others. The Francolince perhaps 

 approach nearest to it. Not having any bones of the Dodo, I am unable to say how 

 nearly they coincide in structure with the pigeons ; but the form of the accessory 

 metatarsal, although general among pigeons, is not by any means peculiar to them. 



160 



