2 BTJBONID.E. 



a. Eav-conch not larger than the eye, 



without an operculum ; facial disk 



unequal, the portion below the eye 



being always much greater than the 



area above'the latter Svhfam. BUBONINJE, p. 2. 



h. Ear-conch much larger than the eye, 



with very large operculum shutting 



in the ear: facial disk always di- 

 stinct, and extending as far above 



the eye as it does below it Sub/am. SYRNIIN^, p. 225, 



Sternum ot JBubo maximus, to show hinder margin and furcula. 



Subfam. I. BUBONIN^. 



Key to the Genera. 



a. Soles of feet with tiny spicules, as in the 

 Ospreys ; tarsi generally naked. 



n'. With large ear- tufts 1. Ivetupa, p. 4. 



h'. With no ear-tufts 2. Scotopelia, p. 9. 



h. Soles of feet ordinaiy, without any strongly 

 developed spicules. 

 d. Cere not inflated ; nostrils oval, and si- 

 tuated in the anterior mai-gin of the cere. 

 a". With distinct ear-tufts. 



«'". AVings short, falling short of the 

 taU by more than the length of the 

 middle toe ; toes sometimes bare 

 or scantily feathered; tarsi never 



naked .3. Bubo, p. i2. 



b'". Wings very long, reaching nearly 

 or quite to the tip of the tail, or 

 falling short by less than the length 

 of the middle toe ; toes generally 

 feathered ; tarsi sometimes entkely 



naked 4. Scops, p. 43. 



h". Ear-tufts rudimentary or absent. 



