110 
BLUE AND YELLOW MACCAW. 
Macrocercus ararauna. — Auctobum. 
PLATE VI. 
Psittacus maximus cyano-virens, Aldrov. Will Ara blei# 
et jaune, Buff. PL Enl. 36 L’Ara-rauna, Le Vaillant, 
i. t. 3. — Psittacus ararauna, Shaw's Zool. v. viii. p. 391. 
pi. 54. 
This beautiful species is rather inferior in size to 
the great Scarlet Maccaw, but being less common than 
that bird, and possessing all the typical characters 
of the group, we have thought that an accurate fi- 
gure of the rarer bird would be more acceptable to 
our readers, than one of a kind better known, al- 
though the plumage of the latter may boast of greater 
richness and brilliancy of colour. In length, it mea- 
sures about 39 inches, the tail alone being about 24. 
The bill is entirely black, very large and strong. 
The upper mandible, measuring from the forehead 
to the tip, three inches and a quarter : it is greatly 
deflected, and bends immediately from the base ; the 
under mandible is short and massive, rapidly ascend- 
ing, and describing when closed, a right angle with 
the upper. The cheeks are white, and nearly naked, 
with three fine narrow stria; of small black plumes 
