146 



SEXUAL SELECTION : BIEDS. 



Part II. 



loped and more brightly coloured. To the right and 

 above this spot (Z>), with its bright shading, there is a 

 long, narrow, black mark (c), belonging to the same 

 row, and which is arched a little downwards so as to 

 face (h). It is also narrowly edged on the lower side 

 with a fulvous tint. To the left of and above c, in the 



B C 





Fig. 58. Portion of one of the Secondary wing-feathers near to the body ; shewing the 

 so-called elliptic ornaments. The right-hand figure is given merely as a diagram 

 for the sake of the letters of reference. 



A, B, C, &c. Eows of spots running down 

 to and forming the elliptic orna- 

 ments. 



b. Lowest spot or mark in row B. 



c. The next succeeding spot or mark in 



the same row. 



d. Apparently a broken prolongation of 



the spot c in the same row B. 



same oblique direction, but always more or less distinct 

 from it, there is another black mark (d). This mark is 

 generally sub-triangular and irregular in shape, but in 

 the one lettered in the diagram is unusually narrow, 

 elongated, and regular. It apparently consists of a 

 lateral and broken prolongation of the mark (c), as I 



