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Show 938 MARQUIS OF TWEEDDALE ON T H E [Nov. 19, 8. ACCIPITER STEVENSONI. (Plate LVII.) Accipiter stevensoni, Gurney, Ibis, 1863, p. 447, t. xi. [Zamboanga. a. $ > April: iris golden ; bill black ; legs greenish ochre, 6. $ , 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?), pidlus, April: iris yellow ; cere greenish; beak and claws black ; legs light greenish ; sole of foot yellow.] Dimensions :-• a. h. c. d. Wing. in. $ 7*50 $ 6*75 6* juv.(o?) . 5 75 6* juv 5*12 Tail. in. 5*75 575 400 4-00 Tarsus. in. 1*87 175 1-81 1*62 Middle toe. in. 1-16 1*25 1*25 1*06 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 rnfous. 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 between 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-fulvouSjwith 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 6 I believe to be the same ; but 1 have never before seen a female with so rufous a breast, though it much resembles the figure of the male type specimen (now somewhat faded) in the ' Ibis ' (/. s. ci). The two nestlings may be either A. ste- |
