54 E. D. VAN OORT. BIRDS. 



The adult spécimen has the crown of the head slaty black, hère and there mixed 

 however with white. In one of the young birds the head is entirely white, in the other one 

 are the crown and the sides of the head strongly washed with ashy grey. The ornamental 

 nuchal plumes in the latter spécimen are more developped than in the other young bird ; 

 in both spécimens thèse plumes are white. The two young birds hâve no ornamental plumes 

 on back and scapulars. Ardea arnensis G. R. Gray is undoubtedly the immature stage of 

 A. picata Gould. 



Butor ides j avanie a stagnatilis (Gould). 



Ardetta stagnatilis Gould, Proc. Zool. Soc. London, 1847, p. 221. 

 Butorides javanica, Salvadori, Orn. Pap. III, 1882, p. 359. 

 Butorides stagnatilis, Sharpe, Cat. B. Br. M. XXVI, 1898, p. 183. 



Coll. KOCH: 



Ç juv., Merauke, 23 August 1904. 



Native name : Sarare. 



Coll. LORENTZ : 



N°. 518, ç? juv., Merauke, 16 November 1907. Iris yellow, upper mandible black, lower mandible 

 yellow-green, feet greenish brown. 



Dupetor flavieollis gouldi (Bonaparte). 



Ardetta gouldi Bonaparte, Consp. Av. II, 1855, p. 132. 



Ardeiralla flavieollis, Salvadori, Orn. Pap. III, 1882, p. 364. 



Dupetor gouldi, Sharpe, Cat. B. Br. M. XXVI, 1898, p. 249. 



Dupetor flavieollis gouldi, Rothschild & Hartert, Nov. Zool. XV, 1908, p. 354. 



Coll. KOCH : 



One spécimen, Merauke, 8 July ^04. Iris light brown. 



Nycticorax caledonica (Gmelin). 



Ardea caledonica Gmelin, Syst. Nat. I, 1789, p. 626. 



Nycticorax calédoniens, Salvadori, Orn. Pap. III, 1882, p. 372. — Sharpe, Cat. B. Br. M. XXVI, 

 1898, p. 158. 



Coll. KOCH: 



cf nestling, Merauke, 16 August 1904. 

 Young spécimen, near Merauke. 



Coll. LORENTZ: 



N°. 178, çj 1 , Van Weel'skamp, 1 June 1907. Iris orange-yellow, bill black with yellow tip, feet yellow. 

 N°. 179, ef, Van Weel'skamp, 1 June 1907. Iris orange-yellow, bill black with yellow tip, feet yellow. 

 N°. 308, Ç J uv - ; Sabang, 3 July 1907. Iris yellow, bill grass-green with black culmen, feet grass-green. 

 N°. 388, Q juv., Alkmaar, 3 August 1907. Iris yellow, bare space round the eyes green, bill 



black with greenish base, feet yellow-green. 

 N°. 473, vix ad. (not sexed), Noord River near the 'Zwaluw', 4 August 1907. Iris yellow, upper 



mandible black with yellow-green base, lower mandible and feet yellow-green. 

 N°. 485, ad. (not sexed), Noord River near the 'Zwaluw', 17 August 1907. Iris yellow, upper 



mandible black, lower mandible yellow-green, feet yellow-green. 



