1918.] Under Wing- Coverts of Birds, 563 



Scoptehis hmnneiceps. One specimen examined, a male in 

 immature plumage, No. 5879. 



Major under coverts entirely wanting. 



Median under coverts present on the cubitus only^ where 

 they form with the minor coverts a single row of about 

 sixteen feathers very close together, with one continuous 

 overlap (the contrary one). The reversed and the minor 

 coverts of the single row can be distinguished only by 

 noting that every alternate feather is turned face tovvards 

 the remiges, while the remainder are reversed. 



Bycanistes albotibialis . One specimen examined, not 

 saved. 



Apparently no reversed under coverts whatever. There is 

 a row of well-developed minor coverts extending the whole 

 length of the wing, and behind these and hidden by them, 

 on the cubitus, two rows of small downy feathers with stiff 

 and peculiarly flattened shafts, the two rows so close together 

 as to form a single numerous row with continuous contrary 

 overlap. These were found to have the more convex and 

 glossy side of the rhachis turned from the remiges, and were 

 thought therefore to be. minor coverts. It is possible that a 

 closer examination might have shown the alternate ones to 

 be reversed, as was afterwards found in the specimen of 

 Scoptelus (see above) . 



Bycanistes sharpei. One specimen examined, No. 5623. 



Probably no reversed under coverts. This specimen had 

 behind the fully-developed minor under coverts on the 

 cubitus some small feathers which were mostly in moult 

 and those not in moult were too small for me to determine 

 whether they were reversed or not. 



Lophoceros fasciatus. One specimen examined, not saved. 



No reversed under coverts that were certainly known tc 

 be such. Two small feathers standing close to the 11th and 

 12th cubital remiges, near the elbow, seemed to be reversed, 

 but I could not be sure. A row of minor under coverts 

 somewhat resembling the peculiar small ones noted in the 



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