EAGLE. RAPTORES. HALI^ETUS. 17 



ha so bluish-grey, and the rest black. Cere lemon- 

 yellow. Irides clear dark chesnut-brown. Forehead 

 dark chesnut-brown. Crown of the head, and nape of 

 the neck, yellowish-brown, inclining to pale orange- 

 brown ; the feathers narrow, distinct, and pointed. 

 Throat and under part of the neck dark umber-brown. 

 Breast and belly dark brown, with a few white feathers 

 intermixed. Inside of the thighs white. Vent and un- 

 der tail-coverts white, having some of the feathers tipped 

 with brown. Back and wing coverts very intense um- 

 ber-brown. Upper tail-coverts white, some of them be- 

 ing tipped with brown. Tail, for two-thirds of its 

 length, white ; the remainder (or end part) blackish- 

 brown. Greater quills very intense brown, or black- 

 ish-brown, having their bases white. Secondaries, for 

 two-thirds of their length from the base, white. Tarsus 

 clothed with white feathers. Toes lemon-yellow. Claws 

 black. 



GENUS HALI^IETUS, SAVIG. SEA-EAGLE. 



GENERIC CHARACTERS. 



BILL elongated, strong, straight at the base, curving in a re- 

 gular arc in advance of the cere to the tip, and forming a deep 

 hook. Culmen broad, and rather flattened. Tomia of the 

 upper mandible slightly prominent behind the commence- 

 ment of the hook. Nostrils large, transversely placed in 

 the cere, and of a lunated shape. Wings ample ; the fourth 

 quill-feather the longest. Legs having the tarsi half 

 feathered, the front of the naked part scutellated, and the 

 sides and back reticulated. Toes divided to their origin; 

 the outer one versatile. Claws strong and hooked, grooved 



VOL. I. B 



