ACCIPITEES 



483 



memhranosus are inserted in common. There are two 

 peroneals (at any rate in Cathartes). The deep flexors are 

 fused before origin of four slips to four toes. 



The glutaus I. coTers over biceps, and glutseus V. is 

 present. 



The skull of the Cathartidse has basipterygoid processes. 

 It is desmognathous, but the desmognathism is totally 



Fig. 229. — Windpipe op Condoe (after 

 Beddabd). 



Tr, trachea ; ce, cesopliagus ; 0, ostia of lungs : a, sp, 

 septa between air sacs ; m, muscles ensheatliing end 

 of bronchi. 



Fig. 230. — Skdll of Cathartes 

 aura (atier Huxley). 



PmXt premaxilla ; Mxp, maxillo-pala- 

 tines ; PZ, palatines ; i^, pterygoid ; 

 S, osBlfled septum ; x, basipterygoid 

 processes. 



different from that of other vultures and hawks. The 

 maxillo-palatines proper (see fig. 230) are very far indeed 

 from meeting in the middle line ; indeed, they only just get 

 beyond the shelter of the palatines. But a flat dorsal pro- 

 cess of each of these bones (S) meets and is co-ossified with 



1 I 2 



