1()2 FALCO PEREGRIN US. 



Fe3Iale. — The female, which is always much larger 

 than the male, is further distinguished by the tints and 

 marking's of the plumage. The bare parts and irides 

 are as in the male. The head, the hind part and sides 

 of the neck, the back and wings, are deep greyish- 

 brown ; the feathers of the upper hind neck reddish- 

 white at the base, of the other parts ash-grey ; the back 

 and wing-coverts indistinctly barred with grey; the 

 rump is ash-grey, broadly barred with greyish-brown. 

 The greater coverts are blackish-brown, the primary 

 coverts barred with grey on the outer web ; with spots 

 of reddish-white on tlie inner ; the quills of the same 

 colour, indistinctly marked with spots of ash-grey on 

 the outer webs, on the inner with transverse elliptical 

 spots of cream-colour ; the tips of the secondaries 

 whitish. The tail has eighteen alternate bars of ash- 

 grey and deep brown, the latter broadest, the tip 

 brownish-white. The throat and fore neck are yellow- 

 ish-white, with longitudinal lines of deep brown ; the 

 mystachial band is dark brown ; the breast brownish- 

 white, with transverse bars of deep brown, as are the 

 lower wing-coverts and tibise ; the abdominal feathers 

 redder, with the bars less distinct ; those on the lower 

 tail-coverts narrow. 



Length to end of tail 21^ inciies, to end of wings 

 20|; extent of wings 45; wing horn flexure 13^; 

 tail 12 ; bill along the back Ij^^, along the edge of low- 

 er mandible 1|; tarsus 2^; hind toe \^, fts claw i^; 

 second toe l-^^y ^'s claw 1^^^ ; third toe 3;^, its claw 1 ; 

 fourth or outer toe lj\, its claw {f . 



Variations. — The males vary in length from fifteen 



