( 158 ) 
EXPLANATION of soME TECHNICAL 
TERMS IN ORNITHOLOGY USED IN THIS 
WORK, AND BY LINNAUS. 
, Fig. 
aT 
Cere. Cera 
Capiftrun 
Lorum 
Orbits. Orbita 
Emarginatun 
Vibrife 
Baftard wing. 
Alula fpuria 
HE naked fkin that covers the 
 bafe of the bill in the Haws 
kind. 
A word ufed by Linneus to exprefs 
the fhort feathers on the forehead juft 
above the bill. In Crows thefe fall 
forwards over the noftrils. 
The {pace between the bill and the 
eye generally covered with feathers, 
but in fome birds naked, as in the 
black and white Grebe. 
The fkin that furrounds the eye, 
which is generally bare, particularly 
in the Heroz and Parrat. 
A bill is called rofrum emarginatum 
when there is a {mall notch near the 
end: this is confpicuous in that of 
Butcher-birds and Thrufbes. 
Vibrife peGinate, Tuff hairs that 
grow on each fide the mouth, formed 
like a double comb, to be feen in the 
Goatfucker, Flycatcher, &c. 
A fmall joint rifing at the end of 
the middle part of the wing, or the 
cubitus 3 
