APPENDIX. 



203 



Tiff. Tl. 



TTpper surfnce r,f Riglit Wing- of a Bivd extendL-cl lo show the relati.jiis between the 

 •.,.,. tlifrht-feathei's anil coverts. 



i. Primaries \ Rg„jig.^,. 

 2. Secondai'ies 1 

 ;i. Major coverts of primaries. 

 4. Major coverts of secondaries. 

 a. Median coverts. 



li. Minor coverts. 



7. Marginal coverts. 



8. Remiges of bastard wing, 

 ii. Scapulars. 



J'iw. III. 



Under surface of Contour-feather showing after-shaft. 



1. Shaft (Machis). 



2. Vane. 



3. Quill (Calamus). 



4. .Vfter-shaft {Hiiporhachis). 



