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DIl. J. MXJRIE ON RHINOCHF.TUS JUBATUS. [Nov. /, 



terminology*. Ou looking over my article as printed, it seems to me 

 a useful purpose would be served by tlie addition of a note showing 

 the precise equivalents of the respective areas treated of by the above 

 German authority and myself. 



The subjoined tabular view of the nomenclature of Nitzsch and 

 myself shows at a glance the relation of terms employed in distin- 

 guishing the several portions of the contour, feather-tracts, featherless 

 interspaces, and powder-down patches. 



Tract has been employed by Nitzsch for the lines of feathering, as 

 shown in the first column ; space for the bare portions, column two ; 

 and by simply using patch (column three to the right) I define 

 where the powder-downs are found. The minor terms differ, but 

 their import is easily understood. The blanks indicate portions 

 wanting in oue but present in the other, or where no subdivision has 

 been recorded. 



* ' Pterylographie.' and Kay Society's edition. 1867. 



