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APPENDIX. 
ON THE BIRDS OF NORTH BORNEO. 
By Dr. R. B. SHARPE and Mr. JOHN WHITEHEAD. 
The following account and descriptions of the birds collected by me in the North of Borneo appeared 
in ‘ The Ibis ’ during the years 1887 to 189-0 inclusive. I have arranged the several papers in a con¬ 
nected form, cutting out all matter that I considered would be of little interest to my readers. 
All the new species were described by Dr. It. B. Sharpe, with the exception of one by Mr. Ogilvie 
Grant, my notes being given in brackets. 
[From 1 The Ibis.’] 
Order ACCIPITRES. 
Suborder FALCONER. 
Family Falconid^e. 
1. Circus spilonotus (Kaup). 
The series of this Harrier collected by Mr. Whitehead seems to prove conclusively that the sexes are 
similar when they are fully adult. 
Iris bright yellow ; feet dull straw-yellow. 
2. Astur trivirgatus (T.). 
[I met with this Hawk on Kina Balu at a height of 1000 feet in the middle of March 1887. Both 
specimens procured on that occasion were adult females; and on my second expedition I met with a male 
bird in February 1888 at a precisely similar altitude. All bad well-developed crests. 
In Palawan I only obtained a single specimen, a young male, on the 14th of September. The cere 
and feet were pale yellow, and the iris light straw-yellow. This specimen was shot at Taguso, on the 
coast, so that, so far as my observations go, this Goshawk is not found at any great elevation.] 
3. Astur soloensis (Lath.). 
$ juv. Kina Balu, Feb. 26, 1887. 
[On Kina Balu I only found this Goshawk at a height of 1000 feet, when I shot a young female. 
Iris king’s-yellow ; feet and cere similar.] 
4. Accipiter yirgatus (T.). 
$ ad. Kina Balu, Feb. 1887. 
[This bird is evidently a migrant to Kina Balu, and was obtained under the same circumstances as 
Astur soloensis.~\ 
5. Accipiter rufotibialis, sp. n., Sharpe. 
Adult male. General colour above dark slaty grey, the feathers blackish on the edges, the bead and 
mantle blacker than the back ; quills blackish brown, crossed with bars of black, from five to six in 
number ; rump, upper tail-coverts, and tail slaty grey, lighter than the back, the tail crossed by four 
black bands, five in number on the outer feather ; lores, sides of face, and ear-coverts sooty black, the 
cheeks blackish washed with rufous ; the under surface of the body rich chestnut, the throat buff, with a 
central line of blackish streaks ; abdomen chestnut, with a few white bars on the upper part, the lower 
abdomen white with a few broad reddish bars ; under tail-coverts white ; thighs uniform chestnut ; 
under wing-coverts reddish buff, spotted with black ; axillaries whitish, washed with rufous and barred 
across with dull blackish. Total length 9’3 inches, culmen 0'4, wing 5 - 95, tail 4’2, tarsus P8. 
Young male in moult. The first plumage has evidently been brown, with broad ferruginous edges to 
all the feathers ; tail ashy brown, with four black bands, five on the outer feather. The under surface is 
