142 
230. Thalassoaétus pelagicus pelagicus! (Pall.), N.E. Siberia, 
Zoogr. Rosso-Asiat., i., p. 343 (1827). [Js- Kamtschatka, 
lands between Kamtschatka and America: Bering I., 
Bering I.) Sakhalin; in’ 
Steller’s Sea-Eagle. winter S. to 
Koreo, Japan, 
Wing ad. 3 560-580, 2 600-620 mm. (juv. Amur region & 
3 645, juv. 2680 mm.) ; tail ad. § 330-350, Loo Choo Is., 
2 340-360 (juv ¢ 385, juv., 2 390 mm.) ; also Alaska. 
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. 
230a. Thalassoaétus pelagicus niger Heude, Nat- Korea. 
uraliste, 1887, p. 95. [Korea.] [= H. 
branichi, Tacz.] 
Black Sea-Eagle. 
Wing $550, 2 608 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-yellow. 
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 T. macrurus (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. 
