The Descent of Man

connected with one of the ball-and-socket ocelli.
Looking to any one row, for instance, B, in
Fig. 59, the lowest mark (b) is thicker and considerably
longer than the upper spots, and has
its left extremity pointed and curved upwards.
This black mark is abruptly bordered on its
upper side by a rather broad space of richly
shaded tints, beginning with a narrow brown
zone, which passes into orange, and this into a
pale leaden tint, with the end towards the shaft
much paler. These shaded tints together fill up
the whole inner space of the elliptic ornament.
The mark (b) corresponds in every respect with
the basal shaded spot of the simple feather described
in the last paragraph (Fig. 58), but is more
highly developed and more brightly coloured.
Above and to the right of this spot (b, Fig.
59), 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 (b). This mark is sometimes broken
into two portions. It is also narrowly edged on