[ 149 ] 
APPENDIX. 
^ v hi ] UrME ^ ES ver y generously presented to the India Office some plates of Indian birds, 
P^'. 1 ^ ;|(; 1' been prepared for his contemplated work on the Avifauna of the British Asian 
pUe ‘ I have therefore availed myself of the opportunity to utilize these plates on the 
11 occasion, as some of them are excellent examples of Mr. Keuleman’s work. 
1- Hier opalco saker. (Plates XVI.-XIX.) 
F ' llc o sa cer, Gm. Syst. Nat. i. p. 273 (1788). 
terofulco saker, Sharpe, Cat. B. Brit. Mus. i. p. 417 (1874). 
^ Pere gi ve a few remarks on the changes of plumage in the Saker Palcon, based upon 
material in the Hume Collection : — 
s p &( l ° Un 0 male. General colour above nearly uniform brown, with somewhat of an ashy 
and ° :in< * a s ^« p t iudication of rufous margins to the feathers of the lower back and rump 
shaded^' ^ vdn S' covej -'ts ; the scapulars with a few rounded whitish spots; tail-feathers brown, 
tp e a §hy and rather broadly tipped with white, and having the inner weh barred, and 
c ° V fcrts ^ r ° Undl y s P°tted, with rufous or rufous-white ; quills dark brown, the primary- 
a nd 1 ! an< ^ se(;on< kmes with rufescent edges like the scapulars, the primaries dusky below 
Ws a< ,yV Paude< l with pale rufous for nearly the entire extent of the inner web, these light 
rufou ° U ^ le * une r weh often forming broad triangular notches ; crown of head pale tawny 
d Us p S ’ ral,ler broadly streaked with black ; the hind neck whitish, with broad centres of 
Whit" 3l ° Wn the feathers; lores and base of forehead huffy white; a superciliary band of 
an <l a ’ llairowl y streaked with black, forming an indistinct eyebrow ; feathers behind the eye 
ear w°ad streak along the upper edge of the ear-coverts dark brown ; remainder of the 
strea ]' eids whitish, narrowly lined with black ; from below the eye a broad moustachial 
ch ee p s ° f ljlack obliquely crossing the cheeks to the sides of the throat ; the fore part of the 
broajf r W ^ te the throat ; remainder of the under surface of body ochreous buff, very 
r est of y streaked with blackish brown ; the upper part of the thighs uniform dark brown, 
f e »at] 1 thighs creamy white, streaked with brown; the upper part of the tarsus also 
Ve *y u 6 f 111 ^’ ont ; lower abdomen and under tail-coverts creamy buff; the flank-feathers 
the i n " I Orni 1,r °wn, the feathers being broadly edged externally with sandy buff, while on 
patt ern ei °t many of them is an ovate spot of sandy buff, indicating a break-up of the 
also hr ° that her ; axillaries brown with twin spots of sandy buff; under wing-coverts 
la, nvjl '° U n ’ witli edgings and spots of sandy buff, the smaller coverts sandy buff streaked with 
With t' , eSpecIall y near the edge of the wing ; lower primary-coverts ashy, like the quill-lining, 
ln s P°ts of creamy buff. Total length 20 inches, wing 14’5, tail 8’0, tarsus 2 - 5. 
