OSTEOLOGY OF BIRDS 



117 



palatines and the bony septum of the nose. As in most all Fal- 

 conidae the internal laminae of the palatines are represented by 

 conspicuous vertical plates, 'but here they develop horizontally thick- 

 ened inferior borders, for their entire lengths. 



Anteriorly, the mamillaries and the horizontal parts for the 

 ?n axil lo palatines indistinguishably fuse with the bones in front of 

 them, but are not in contact with the underlying prepalatines, which 

 latter fuse still more anteriorly with the dentary processes of the 

 premaxillary. 



Jlg.SS. 



jl S . S9. 



Fig. 58 Anterior aspect of the right coracoid of 

 Pandion 



Fig. 59 The right scapula of Pandion seen upon 

 its upper aspect. Both figures natural size 



The subvertical part of either maxillopalatine is of no great size, 

 being highly sptfngy in texture, and fuses with the fellow of the 

 opposite side in front, and also with the nasal, the nasal septum, 

 and perhaps far in front with the distal ends of the prepalatines. 



This osprey has a mandible of a true Y-shaped pattern, with 

 rounded apex ; a fair symphysis, which is concaved superiorly ; with 

 thickened ramal limbs, unpierced by any vacuity, and with rounded 

 borders! Pneumatic, and with truncated articular cups behind, it 

 does not develop the peculiar processes seen in the falcons, which 

 when the jaw is articulated, cover the front part of either quadrate. 



