[ 3 21 3 
P. s. 
SINCE I Tent to you my very long letter on the 
migration of birds, I have had an opportunity of exa- 
mining the “ Planches Enluminees,” which are faid 
to be publifhed under M. de Buffon’s in fp edition, 
and which feem to afford a demonffration of M. 
Adanfon's inaccuracy in fuppofing either the roller, or 
fwallows, which he caught in his fhip, near the coafr 
of Senegal, to be the fame with thofe of Europe. 
In the 8th of thefe plates, there is a coloured 
figure of a bird, called le rollier d’Angola, which 
agrees exactly with M. Adanfon’s defcription * ; but 
he trufted too much to his memory, when he pro- 
nounced it to be the fame with theGarrulus Argen- 
toratenfis of Willughby, and therefore fuppofed it 
to be on its paffage to Europe. 
This bird hath, indeed, in many refpedts, a very 
ftrong refemblance to the common roller of Europe., 
which is reprefented alfo in the Planches Enlu- 
minees, plate 486 i but it differs rnoft materially 
in the length of the two exterior feathers of the 
tail, as well as in the colour of the neck, which 
in the African roller is of a mofl bright green, and 
in the European of rather a dull blue. 
In the 310th plate, there is likewife a coloured 
reprefentation of the “ Hirondelle a ventre roux du 
“ Senegal,” which fpecimen was poffibly furnifhed 
by Monf. Adanfon himfelf. 
* Voyage au Senegal, p. 15. There Is alfo another African 
bird, reprefented in the “ Planches Enluminees,” which might 
Very eafily, on a hafly infpe&ion, be tniftaken for the Garrulus 
Argentoratenfis, vlz. the Guepier a longue queue du Senegal. 
Pi. Enl. p. 314. 
The roller of Angola is alfo engraved by BrifTon, T» ii. 
pi. 7. 
Vol. LXIL T t 
it 
