350 TALCONID^. 



with black like the breast ; quills dark brown, with indistinct bars 

 of deeper brown, more distinct underneath, the secondaries paler 

 and tipped with whitish ; tail brown, with five bars of darker brown 

 and remains of other bars on the interspaces, the tip whitish. Total 

 length 21-5 inches, culmen Vo, wing 14-7, tail 10-5, tarsus 2, middle 

 toe 1-75. (Mus. Lugd.) 



Hob. Celebes. 

 a. Ad. sk, Celebes. J. Gould, Esq. [P.]. 



Subfamily VII. FALCONING. 



Outer toe only connected to middle toe by interdigital membrane ; 

 tibia much longer than tarsus, but the latter not contained twice in 

 the former ; hinder aspect of tarsus reticulate ; bill distinctly toothed. 



Key to the genera. 



a. Nostrils oblique or linear ovals, with distinct over- 

 hanging membrane. 

 a'. Bill with two distinct teeth ; wings not reach- 

 ing to tail. 

 a". A distinct occipital crest; no tubercle in 



nostril 08. Baza, p. 351. 



b". No occipital crest ; a distinct central tubercle 



to nostril G9. Habpagus, 



h'. Bill with only one tooth ; wing reaching to tip p. 360. 



of tail 70. IcTiNiA, p. 364. 



h. Nostrils perpendicular ovals, with no overhanging 

 membrane or central tubercle, 

 c'. Bare part of tarsus in front less than outer toe. 71. Micbohierax, 

 d'. Bare part of tarsus greater than outer toe and p. 366. 



claw 72. POLIOHIERAX, 



e. Nostrils round, vsdth distinct central tubercle. p. 369. 



e'. Outer toe (without claw) longer than inner toe 

 (without claw), 

 c". Distance between tips of primaries and tips 

 of secondaries less than half length of tail. 

 c'". Middle toe very short ; the culmen (with- 

 out cere) not contained twice in middle 



toe (without claw) 73. Spiziapteryx, 



d". Middle toe very long, more than twice p. 371. 



length of culmen, as above measured . . 74. Habpa, p. 372. 

 d". Distance between tips of primaries and tips 



of secondaries more than half length of tail 75. Falco, p. 374. 

 f. Outer and inner toes (measured without claws) 

 about equal in length. 

 e". Distance between tips of primaries and tips 

 of secondaries about equal to or less than 

 half the length of tail. 



