Velvet Duck. 



UNDER TAIL COVERTS. — Those feathers immediately cover- 

 ing- the base of the tail beneath. 



UNDER WING COVERTS. — Those feathers covering- the wing- 

 underneath. 



UPPER TAIL COVERTS.— Those feathers immediately covering 

 the base of the tail feathers. 



UPUPA (Linnjeus.) — * Hoopoe, a genus thus characterised. Bill 

 long, compressed, awl-shaped, and curved ; nostrils at the base ovate 

 and open ; legs, with the shank short, three toes before, and one 

 behind; the outer toe joined to the middle one, as far as the first joint; 

 claws short, and not much hooked ; tail composed of ten feathers, 

 square at the end ; wings having the first quill short, and the fourth 

 and fifth the longest.* 



URIA (Brisson.) — *Guillemot, a genus thus characterised. Bill 

 middle-sized or short, straight, pointed, compressed ; the upper man- 

 dible slightly curved towards the point ; the under forming an angle 

 more or less open ; nostrils at the sides of the base concave, slit length- 

 wise, one half hid by a broad membrane, clothed with feathers, and 

 pierced from part to part ; legs short, placed back upon the belly beyond 

 the balance of the body ; shanks slender ; only three toes, placed 



