AKT. 16. BIRDS FROM NORTH CELEBES ^RILEY. 39 



73. ICTINAETUS MALAYENSIS MALAYENSIS (Temminck). 



One female, Napoe, Watoetaoe, November 20, 1917. 



This specimen is not quite adult. The abdomen has a few cinna- 

 mon-buff streaks; the bend of the wing with whitish markings along 

 the margin; the auriculars with some clay color streaks; and the 

 nape with a few slight buffy markings. It is molting and the new 

 tail and primaries have already been acquired and the wing-coverts, 

 scapulars, secondaries, and back-feathers are in process of renewal. 

 The new feathers are sooty-black with a greenish sheen in certain 

 lights and show conspicuously amongst the older dark brown fea- 

 thers of the plumage; the tail with dark grayish irregular shadow 

 bars. It measures : Wing, 520 ; tail 290 ; culmen from cere, 29, which 

 is considerably smaller than an unsexed specimen from Darjeeling, 

 India, with which I have compared it. 



74. SPIZAETUS LANCEOLATUS Temminck and Schlegel. 



One adult male, Molengkapoti, Kwandang, October 25, 1914; one 

 immature female, Laboea Sore, November 20, 1916. 



75. SPILORNIS RUFIPECTUS RUFIPECTUS Gould. 



One male, Kwandang, October 9, 1914; one female, Laboea Sore, 

 November 21, 1916 ; one male, Koelawi, January 6, 1916 ; one female, 

 Gimpoe, August 23, 1917; one female, Pinedapa, January 31, 1918. 



The specimen from Kwandang has not quite acquired the fully 

 adult plumage. The back and chest are lighter than in the adult; 

 a patch in the center of the chest and under primary coverts white, 

 the latter with a few brown spots ; the feathers of the nape margined 

 with cinnamon; and the bars on the underside of the tail much 

 fainter than in the adult. The bars on the tail of the female from 

 Gimpoe are very faint and on the two outer feathers on each side are 

 reduced to two, very narrow, near the tip; the chest is darker than 

 in the other adult specimens. It is molting, and the old, worn 

 feathers of the back are being replaced by dark new ones. 



76. CUNCUMA LEUCOGASTER (Gmelin). 



One immature male, in the brown plumage, Kapas Bay, November 

 18, 1914. 



77. HALIASTUR INDUS AMBIGUUS Bruggemann. 



One male, Kwandang, October 7, 1914; one male, Koeala Prang, 

 June 4, 1916 ; one female, Toboli, October 26, 1916 ; one male, Toare, 

 September 20, 1917. 



The above specimens have been compared with a good series of 

 adults from the Philippines, one from Java, and one from Borneo. 

 The Bornean skin does not seem to differ from those from the Philip- 



