of the District of Montreal. 61 



gineous, beneath white, with oblanceolate dusky brown spots." 

 (Nuttal). 



S\d) genus Btiteo. 



Sub gen. char. Bill short, curved from its base ; lobe blunt ; 

 sides of the lower mandible in-curved ; wings long ; 1st priraary 

 shortest; four first primaries indented in their inner web. The 

 tarsi of some are feathered the whole length, distinguished from 

 the eagles by their bill curving from the base, and from the 

 goshawks by the naked space between the eyes and bill. 

 F. lagojms. Booted hawk. Rough legged falcon. 

 F. Sdavonicus. Latham ! 

 F. spadicius of Idem ! 

 Archihuteo lagopus. Briinnich ! Gray ! Baird I 



v.s.p. ET M. Cere and irides light drab ; tarsi yellow; bill and 

 claws black ; eggs 4, white, mottled with red. 



Dorsal aspect. Head and neck light yellowish brown, streaked 

 with umber brown, and black shafts ; dorsal region as far as the 

 rump umber brown, the feathers edged with light yellowish 

 brown, these tips disappearing towards the rump ; wing coverts 

 umber brown, tipped with rufous ; four first primaries indented in 

 their inner webs, white near their quills, and dark chocolate 

 brown towards their extremities ; shafts white, edged with brown 

 along the quills, the remainder brown; the basal half of the tail 

 is brownish white, terminated by umber brown, tipped with grey- 

 ish white. 



Ventral aspect. Throat, breast and belly, like the upper sur- 

 face, but with narrower streaks ; on the breast the streaks are 

 broader ; then comes an apparent interruption, which is followed 

 by a broad belt of umber brown across the belly ; the feathers 

 here being, except in the centre, not edged with white ; wing 

 coverts and vent feathers brownish white, with white shafts ; tail 

 yellowish white at the base, with a terminal slate grey border . 

 inner shafts of all the wing feathers white, the quills themselves 

 white towards their base, with their distal halves shining blackish 

 brown; shoulders white; tarsi feathered to the toes; femorals 

 very long reaching to the toes, yellowish brown, streaked with 

 chocolate, in the form of an oval spot at the extremity of each 

 feather. 



Toes stout, cushioned ; middle toe longest; claws long, strong, 

 not much curved, grooved beneath, the middle one with a salient 



