372 



STRUCTURE AND CLASSIFICATION OF BIRDS 



from the humerus just below the insertion of the deltoid, 

 and is inserted near to the insertion of the biceps. The 

 expansor secundariorum is present. 



The syrinx of Bhinochetus is tracheo-bronchial, and 

 presents us with no features of special interest. The 

 accompanying drawing (fig. 181) shows its lateral aspect. 

 The bronchidesmus is incomplete ; the intrinsic muscles are 

 attached to the third bronchial semi-ring. 



The number of cervical vertebrm is sixteen. Four of the 



/, -x 





' A . 



7 I 



Fig. 180 — Muscles of Foke Limb of 



Bhinochetus . (afiee Beddabd). 



D, D2, deltoid ; Ldl, Ld2, latissimus dorsi ; Bil, biceps : 



Bi2, accessory biceps ; iV, nerve. 



Fig. 181.— Sybinx of 

 Bhinochetus (afteb 

 Beddard). 



last dorsal vertebrm are ankylosed. Five ribs articulate with 

 the sternum. The sternum is unnotched. The shull is 

 schizorhinal ; there are no basipterygoid processes. There 

 is a partial bony internasal septum not to be found in the 

 cranes. The' interorbital septum is more fenestrate than in 



