CLASS II. AVES. 



$ /. Feet formed for grasping. 



ORDER I. RAPTORES. 



Bill strong, covered at the base with a cere, hooked 

 towards the extremity : legs strong and muscular, 

 short, or of moderate length : toes four in number, 

 three directed forwards and one behind; rough 

 underneath ; armed with powerful, sharp, curved, 

 retractile talons. 



I. VULTURID^. Head and neck more or less 

 divested of feathers : nostrils lateral, placed in 

 the cere, oval or elongated: feet generally naked: 

 claws moderately curved. 



1. NEOPHRON Bill long, slender, straight, hooked 

 at the extremity ; lower mandible bending downward ; no 

 gonys : nostrils longitudinal, lateral, situate near the ridge : 

 fore part of the head naked ; neck feathered : feet strong, 

 moderate, naked : wings long ; third quill the longest : 

 tail of fourteen feathers. 



II. FALCONIDM. Head feathered: nostrils la- 

 tend, placed in the cere> rounded or oval: legs 



feathered to the toes, or naked: claws strongly 

 curved, very sharp. 



2. AQUILA. Bill long, very robust, convex or 

 slightly angular above, straight at the base, much hooked 



D 



