STRIGID^. 



289 



Family STRIGIDiE. 



GlaucinsB, Sundev. Av. Tent. p. 104. 



Sternum of Strix flammea. 



Hinder margin of sternum entire, with no distinct clefts ; furcula 

 joined to keel of sternum ; inner margin of middle claw serrated ; 

 inner and middle toes equal in length ; between the anterior por- 

 tion of the facial area a frontal patch of small stiff feathers always 

 present and very broad. 



Key to the Genera. 



a. Tarsus about equal to twice length of middle 



toe (without claw) ; facial disk very perfect, 

 the distance above the eye about equal to the 

 same area below it ; wings reaching far beyond 

 tail 1. Sthix, p. 290. 



b. Tarsus about equal to twice length of middle 



toe (without claw) ; facial disk irregular, the 

 ai-ea above the eye being not nearly equal to 

 the area below the latter ; wings about reach- 

 ing to tip of tail 2. Phodilus, p. 390. 



VOL. II. V 



