4o2 PANDIONES. 



80. POLIOAETUS. 



Type. 



Ichthyaetus, Lafr. Rev. Zool. 1839, p. 19G *. 



Polioaetus, Kaup, Contr. Om. 1850, p. 73 P. iclitliyaetua. 



Range. India ; extending throughout the Indo-Malayan region 

 as far as Celebes. Supposed to occur also in Oceania f. 



Key to the Species. 



a. Larger ; wing 18-20'5 inches long ichthyaetus, p. 452. 



b. Smaller ; wing not exceeding 16"5 inches humilis, p. 454. 



1. Polioaetus ichthyaetus. 



Falco ichthyaetus, Horsf. Tr. Linn. Soc. xiii. p. 13G (1822) ; id. Z. 



Res. Jam, pi. 34 (1824). 

 Pandion ichtlayaetus, Vig. Zool. Journ. i. p. 321 (1824) ; Gray, Cat. 



Accipitr. 1848, p. 23 ; Bp. Consp. i. p. 16 (1850); Schl. Vog. 



Nederl. Ind., Valkv. pp. 13, 62, pi. 5. figs. 1, 2 (1866) ; Gray, 



Hand-l. B. i. p. 15 (1869). 

 Haliaetus ichthyaetus, Cuv. Rigne An. i. p. 327 (1824) ; Schl. Mus. 



P.-B. Aquilfe, p. 18 (1862). 

 Haliaetus unicolor, Gray lij- Hardto. III. Ind. Zool. i. pi. 19 (1830). 

 Haliaetus plumbeus, Hodgs. J. A. S. B. vi. p. 367 (1837). 

 Ichthyaetus bicolor, Gray, List Gen. B. i. p. 4 (1841) ; Strickl. Om. 



Syn. p. 06 (1855). 

 Ichthyaetus horsfieldi, Blyth, J. A. S. B. xi. p. 110 (1842). 

 Ichthyaetus plumbeus, Hodgs. in Gray's Zool. Misc. p. 81 (1844). 

 Ichthyaetus liucarius, Hodgs. in Gray's Zool. Misc. p. 81 (1844). 

 Pontoaetus ichthyaetus. Gray. Gen. B. i. p. 17 (1845) ; Blyth, Cat. B. 



Mus. A. S. B. p. 30 (1849)'; id. Ibis, 1863, p. 22, et 1865, p. 28. 

 Polioaetus ichthyaetus, Kaup, Contr. Om. 1850, p. 73 ; Jerd. B. Ind. 



i. p. 81 (1862) ; Blyth, Ibis, 1866, p. 243 ; Beav. ^ Ti/tl. Ibis, 



1867, p. 316 ; Wall. Ibis, 1868, p. 14 ; Hume, Rough N. ii. p. 1 



(1870) ; Jerd. Ibis, 1871, p. 336; Blyth, Ibis, 1872, p. 88. 



Young. Above brown, glossed with chocolate, most of the feathers 

 of the upper surface with paler brown margins ; feathers of the 

 head and hind neck mesially streaked with fulvous ; sides of face a 

 little paler than the head, but streaked in the same manner ; under 

 surface of body pale brown, inclining to rufous, and longitudinally 

 streaked with whitish down the centre ; the thighs white, much 

 mottled with rufous brown ; lower abdomen, vent, and under tail- 

 coverts pure white ; under wing-coverts pale brown, plainly streaked 

 with white, the greater series almost entirely white, with a few 

 brown markings; quills brown, white at base of inner web, the 



* This genus, employed by many eminent ornithologists, is inadmissible, as 

 there is not the slightest indication of a type, 

 t I am not personally acquinted with the following species : — 



Polioaetus solitarius. 



Pandion solitarius, Peak, U. S. E.vpl. E.vp. Birds, 1848, p. 62 ; Cass. op. cit. 

 p. 97, pi. iv. (1858) ; Gray, Hand-l. B. i. p. 15 (1869). 

 Hub. Sandwich Islands. 



