BLACK-THROATED DOVE. 
215 
between many of the species of Columla , &c. of 
America, from those which occur both in Africa, 
India, and Australia. 
The adult bird has the middle of the upper plu- 
mage, that is, of the head, neck, back, rump-covers, 
and base of the wings, light grey brown, which gra- 
dually changes into a delicate lead-colour on the 
sides of all these parts, more particularly over the 
wing-covers and on the borders of the deep black 
patch which is in front of the head and the middle 
of the throat and breast ; beyond this, all the body 
beneath is pure white, the longest of the under tail- 
covers only being deep-black. On the tertials and 
some of the greater covers there is a large spot of 
black richly glossed with purple and violet, forming 
a short transverse band ; another, of a brown hue, 
crosses the lower part of the back, and the tips of 
the longest tail-covers being brown, form another 
band more irregular. The greater quills, and three 
or four of the lesser, are rich rufous, more or less 
tipt with black. The tail-feathers are lengthened and 
cuneated ; the longest are grey at their basal half 
and black to the end, the lateral are much broader, 
and of a finer and lighter grey, with an irregular 
band of black just before the tip ; the outermost 
pair has an additional white edging on the basal 
half of the external web ; inner wing-covers rufous, 
the adjoining side-feathers black ; bill and feet yel- 
low. Such is the description of an adult male from 
Senegal ; the female, as described by authors, we 
have not seen, but a bird which we consider as the 
