^BT. 16. BIRBS FROM NORTH CELEBES RILEY. 107 



Family ORIOLIDAE. 



ORIOLES. 

 198. ORIOLUS CELEBENSIS CELEBENSIS (Walden). 



A good series of both sexes from: Kapas Bay, July 22 and No- 

 vember 22, 1914; Kwala Besar, August 23, 1914; Soemalata, Septem- 

 ber 4-8, 1914; Kwandang, September 17-October 26, 1914; Paleleh, 

 November 9, 1914; Toll Toll, December 6, 1914; Tandjong Penjoe. 

 February 17-26, 1915; Likoepang, January 14-March 12, 1916; 

 Ayermadidi, May 5, 1916; Koeala Prang, June 5 and 15, 1916; Batoe 

 Hangoes Baroe, June 11, 1916; Temboan, July 17, 1916; Toboli, Oc- 

 tober 21-25, 1916; Laboea Sore, November 26, 1916; Lindoe Trail, 

 February 25, 1917; Rano Lindoe, March 7-21, 1917; Gimpoe, August 

 3-25, 1917; Toare, September 23, 1917; Parigi, September 16-20, 

 1917; Pinedapa, February 9 and 21, 1918. 



The majority of the specimens with the black occipital band in- 

 terrupted or entirely absent are designated as females by the collec- 

 tor; some of the females possessing the black occipital band, have 

 this character less developed than in the fully adult males. Speci- 

 mens indicated as males, with the occipital band interrupted behind, 

 are probably younger males that have not acquired the fully adult 

 plumage. In other words, the specimens before me seem to bear out 

 Meyer and Wiglesworth's®^ belief that the interrupted occipital band 

 is more or less sexual, it being united in the males and to a less extent 

 in the old females. The variation in the tail pattern is more or less 

 of a variable character, birds with the outer tail feather nearly 

 solidly yellow, or with the base black outwardly, not being confined 

 to either sex or age, except that the tails of the males average a 

 greater amount of black. One female (No. 248581), taken at Tand- 

 jong Penjoe, February 17, has scarcely any black in the tail what- 

 ever, it being lemon chrome and pyrite yellow in the usual pattern, 

 only slightly blackish next the yellow tip on the three pairs of feath- 

 ers next the central pair. No other specimen approaches it. 



A male in apparently adult plumage taken at Soemalata, Sep- 

 tember 8 (No. 248570), and another male taken at Parigi, September 

 20 (No. 250264) have the bills black, but that this is an immature 

 character still retained is shown by an undoubted immature shot at 

 Hano Lindoe, March 15 (No. 251032) ; all three have the black oc- 

 cipital band indicated. 



No specimens from south Celebes are available for comparison but 

 there are apparently no constant differences in color or size between 



86 Birds of Celebes, vol. 2, 1898, p. 587. 



