SWALLOW-TAILED INDIAN ROLLER. 
and Angola Rollers. The point of it's upper 
mandible is very hooked. It is entirely a new 
species." 
The Senegal Roller, considered by BufFon 
as a variety of the Abyssinian Roller, he thus 
describes — 
We may consider the Senegal Roller as a 
variety of that of Abyssinia. The chief dif- 
ference between them is, that in the Abyssinian 
bird the orange-colour of the back does not 
extend, as in that of Senegal, so far as the 
neck and the hind part of the head ; a diffe- 
rence which would not be sufficient to constitute 
two distin6l species : especiallv, as they belong 
to nearly the same climate ; as the two lateral 
quills are double the length of the intermediate 
ones ; as, in both, the wings are shorter than 
those of the European Roller ; and, lastly, as 
they are alike in the shades, the lutsre, and the 
distribution of their colours." 
As this is the entire description given by 
BufFon of these two birds ; from which» Iiow- 
ever) it appears that the upper mandible is very 
hooked 
