1878.] THE ISLAND OF MINDANAO (S.W.). 629 



6. Hypoteiorchis severus (9). 



[Zamboanga, d , April : iris dark brown ; bill black ; cere and orbital skin greenish yellow ; 

 legs bright yellow ; claws black.] 



In the plumage described by Mr. Sharpe (Cat. Accipitres, p. 397) as belonging to the young 

 bird, 



7. MiCROniERAX ERrTHROGENTS (10). 



[Zamboanga, d ? , April.] 



8. AcciPiTER STEVENSONi.* (Plate LVII. in orig.) 



P.Z.S. 1878, 



Accipiter stevensoni, Gurney, Ibis, 1863, p. 447, t. xi. p. 938. 



[Zamboanga. a. $ , April : iris golden ; bill black ; legs greenish ochre, b. $ , 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. d , puUus, April : iris yellow ; bill 

 black ; legs light green ; sole of foot yellow ; claws black, d. (sex?), puUus, April : iris yeUow ; 

 cere greenish : beak and claws black ; legs light greenish ; sole of foot yellow.] 



Dimensions : — 



Wing. Tail. Tarsus. Middle toe. 



in. in. in. in. 



a. 2 7-50 5-75 1-87 1-16 



^. ? 6-75 5-75 1-75 1-25 



c. d juv. ( ? ?) 5-75 4-00 1-81 1-25 



d. c? juv 5-12 4-00 1-62 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 by 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 h (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 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-fulvous, with broad 

 ruddy-brown stripes. A central gular stripe of brown. Middle pair of rectrices with three 



* [ Vide footnote to this species in the revised list of Philippine birds in the Appendix. — Ed.] 



4 M 



