38 
THE CAPE BLACK-CAPPED ORIOLE. 
neck : two of these are now described, the other 
two are O. Hodsonii of India, and the O. ictero- 
notus, Horsf., of Java*. 
Total length, 91 inches ; bill, from the front, j% ; 
from the gape, l/ s ; wings, 5| ; tail, from the base, 
3f ; tarsus, T 8 5 . 
BLACK-THROATED WAGTAIL. 
AlotaciUa gularis , Swains. 
Above, cinereous ; front, sides of the head, ears and body 
beneath, white ; chin, throat, and breast, black. 
A cursory glance at this pretty, little bird would 
lead an ordinary observer to fancy it was no other 
than our own grey wagtail. An ornithologist, 
however, would immediately perceive they were 
very distinct. It seems to be a rare species, for we 
have never met with more than one specimen out 
of the hundreds of birds from Senegal that have 
passed under our inspection. 
The size of the Black-throated "Wagtail is infe- 
rior to that of the European Motacilla alba , its 
full length not exceeding six inches and a half, 
whereas its prototype is full an inch longer. The 
white in front of the head occupies a greater space 
* Classification of Birds, vol. ii. 
