106 
GREEN -NECKED ROLLER. 
the Senegal we have never yet seen. Of that now 
before us we fortunately possess a young specimen, 
which might he easily mistaken for a different bird, 
since the two outermost feathers of the tail, instead 
of being longer than the others, are a full inch 
shorter ; the green of the head, neck, and body be- 
neath is light, obscure, and verging to brown ; there 
is no white on the front, and but very little on the 
chin ; the azure blue on the shoulders occupies, also, 
a much narrower space. 
In the adult the prevalent colour of the whole 
plumage is a light, changeable, blue or sea-green. 
The ferruginous colour of the back commences only 
at the interscapulars, and not, as in C. Senegala 
(as figured in the PI. Enl. 326), immediately behind 
the nape. This ferruginous colour covers the middle 
of the back, the scapulars, the quill-covers, and part 
of the tertials. The shoulders and lesser wing-covers 
are of a splendid ultramarine blue, so also is the 
rump and upper tail-covers ; all the quills are like- 
wise dark blue, except at their base, where they are 
of the same light green as the body and the greater 
wing-covers. The front of the head, the eyebrows, 
and the chin, are white ; but all the rest of the under 
plumage and the inner wing-covers are uniform light 
sea-green ; such also is the chief colour on the tail, 
but the four middle feathers are blackish green, and 
the base of the others more or less dark blue. The 
narrow prolongation of the two outermost are black ; 
their length depends upon age ; when fully grown, 
they exceed the others by five inches. 
