3. BUBO. 13 



Key to the Species. 



a. Toes so thickly enveloped in plumes, that even 



their last joint is hidden. 



a'. Larger : wing 18-5-19'5 inches ; hind neck 



yellowish, broadly streaked with black, the 



head and neck decidedly lighter than the 



back ignavus, p. 14 ; turco- 



h'. Smaller : wing 14*5-16 inches ; head and neck vianus, p. 17. 

 resembling the back, which is blackish, 

 freckled with white mottlings, the bases of 



the feathers tawny buff virginianus, p. 19. 



h. Toes more or less scantily clothed with feathers, 

 but the final joint always bare ; sometimes the 

 entire toe bare. 

 c'. Bill blackish. 



a". Hind neck yellowish, broadly streaked with 

 black, forming as it were a wig. 

 a'". Underneath ocellated, the light mark- 

 ings very broad, and in form of spots . . ascalaphus, p. 24. 



b"'. Underneath narrowly ban-ed bengalemis, p. 25. 



b". Hind neck buff or grey, but always barred, 



bearing a great resemblance to the rest of 



the upper surface. 



c" . General tone of plumage tawny buff; 



size large, wing 14'5-15-5 ; ear-coverts 



tawny buif, only slightly spotted with 



brown. 



ttK Broadly ban'ed below with white or 



buff and black, the light bars arranged 



in duplicate bauds on the breast ; 



quills dark brown, the light spots on 



the outer webs of the primaries much 



narrower than the dark ones capensis, p. 27. 



6*. Very narrowly barred below ■ndth buff 

 and dark brown; primaries tawny 

 buff', barred with brown, the butt' in- 

 terspaces much the broadest magellanicus, p. 29. 



d'". General tone of plumage brown, or 



greyish brown ; size small ; wing 12-8- 



13"5; ear-coverts greyish white, barred 



with brown. 



c*. Iris yellow, below largely spotted and 



mottled with white ; toes thickly 



leathered maculosits, p. 30. 



rf'. Iris brown ; below mottled with small 

 bars and spots ; toes scantily fea- 

 thered einerascens, p. 32. 



fT . Bill yellow or yellowish white. 



c". Breast greyish, finely vermiculated with 

 brown; head greyish, with black ear- 

 tufts. 

 e". Larger : wing 17'5-19'3 inches ; no 

 mesial dark brown streaks to the 



feathers of the head and breast lacteus, p. 33, 



f". Smaller : wing 16'4, with distinct cen- 



