142 



230. Thalassoaetus pelagicus pelagicus^ (Pall-)' 

 Zoogr. Rosso- Asiat., i., p. 343 (1827). [Is- 

 lands between Kamtschatka and America : 

 Bering /.] 

 Steller's Sea-Eagle. 



Wing ad. cj 560-580, ? 600-620 mm. (juv. 

 3 645, juv. ? 680 mm.) ; tail ad. <? 330-350, 

 ? 340-360 (juv (? 385, juv., ? 390 mm.) ; 

 general plumage blackish brown, with buffy 

 white streaks to head and neck and chest ; 

 wing-coverts, rump, upper and under tail- 

 coverts, tail and thighs white ; immature 

 has these latter parts only mottled with 

 white, and no white on shoulders. 



N.E. Siberia, 

 Kamtschatka, 

 Bering I., 

 Sakhahn ; in 

 winter S. to 

 Koreo, Japan, 

 Amur region & 

 Loo Choo Is., 

 also Alaska. 



230a. Thalassoaetus pelagicus niger Heude, Nat- 

 uraliste, 1887, p. 95. [Korea.] [= H 

 branickii, Tacz.] 

 Black Sea-Eagle. 



Wing S 550, ? 608 mm. ; differs from T p. 

 pelagicus in the great height of its bill and 

 also in having only the tail and under tail- 

 coverts pure white ; rest of plumage black, 

 the feathers on crown and neck with a 

 fine central greyish line ; bill and feet 

 orange-yeUow. 



Korea. 



Gen. LXV. CUNCUMA Hodg. (1857). 

 Type by orig. desig. Haliaetus albipes Hodgs. =Aquila leucorypha 



Pall. 



Tail of 12 feathers, graduated ; bill weaker, the 

 height much reduced. 



1 2'. inacruyus (Menzb.) from Yakutsk, E. Siberia, is a synonym, based 

 on an immature bird, which appears to me generally to have longer primaries and 

 longer and more graduated tail feathers than in the adult bird. 



