038 MARQUIS OF TWEEDDALE ON THE [Nov. 19, 



8. Accipiter stevensoni. (Plate LVII.) 



Accipiter stevensoni, Gnrney, Ibis, 1863, p. 447, t. xi. 



TZamboanga. a. 2 > April : iris golden ; bill black ; legs greenish 

 ochre, b. 5, April: iris golden ; orbital skin greenish-yellow ; bill 

 leaden, apex and cere blackish ; legs greenish-yellow, but pale brown 

 on the toes; claws dark brown, c. c?,pullus, April: iris yellow ; 

 bill black ; legs light green ; sole of foot yellow ; claws black. 

 d. (sex ?), pull us, April : iris yellow ; cere greenish ; beak and claws 

 black ; legs light greenish ; sole of foot yellow.] 



Dimensions : — 



Example a is slaty brown above, darkest on the head. Rectrices 

 pale greyish slate-colour, with five dark-brown bands on middle 

 pair. The under surface is white ; the pectoral, abdominal, and 

 flank-plumes being traversed with two, three, or. more pale-brown 

 bands. The pure white throat has a dark brown and extremely 

 narrow median line formed by the white feathers having a very fine 

 dark edging to the shafts. The quills underneath are regularly 

 banded with white and brown, above brown banded with dark 

 brown. The innermost tertiaries are at most pure white with a pale 

 brown margin. Axillaries pure white with a series of narrow brown 

 cross bars. 



Example b (which is figured in the accompanying plate) has the 

 breast and abdomen uniform pure bright rufous. When the feathers 

 are discomposed they appear white banded with bright rufous. 

 Vent and under tail-coverts are pure white. Thigh-coverts white, 

 with faint pale rufous cross bands. Middle of throat white, with 

 terminal pale earthy marks. Sides of head dingy pale rufous-brown. 

 Upper plumage brown, mixed with rufous in some of the feathers. 

 Middle pair of rectrices with six transverse brown bands. Quills 

 barred as in example a, pale rufous occupying the interspaces be- 

 tween the brown bands to a great extent. Axillaries white, banded 

 with pale rufous. 



Examples c and d are of nestlings in rufous dress. Underneath 

 creamy-fulvous, with broad ruddy brown stripes. A central gular stripe 

 of brown. Middle pair of rectrices with three brown bands. Upper 

 surface of body and head dark brown, with rusty margins and bases 

 to the feathers. Thigh-coverts spotted with light ruddy brown. 



Mr. Gurney observes on these specimens as follows : — The hawk 

 " marked a on the ticket is a female of Accipiter stevensoni in the 

 ordinary adult dress ; that marked b I believe to be the same ; but 

 I have never before seen & female with so rufous a breast, though it 

 much resembles the figure of the male type specimen (now somewhat 

 faded) in the ' Ibis ' (I. s. c). The two nestlings may be either A. ste- 



