PASSERIN&. 939 
GyMNocEPHALUS, Geoff. 
Or the Bald Tyrants. They have a bill similar to that of the Tyrants, 
except that its ridge is somewhat more arcuated; a great part of their 
face is destitute of feathers. 
One species only is known, which is the size of a rook, and the 
colour of Spanish snuff. From Cayenne*. 
CrrHALOPTERUS, Geoff. 
In this subgenus, on the contrary, the base of the bill is furnished 
with feathers which open at top, and form a large panache resembling a 
parasol. 
One species only is known; it is as large as a jay, and black; 
the feathers at the bottom of the breast form a sort of pendent dew- 
lap. From the banks of the Amazon; Cephalopterus ornatus, 
Geoff., Ann. du Mus. XIII. pl. xv; Coracina cephaloptera, Vieill. 
Galer. 114; Temm. Col. 255; Corace ornata, Spix, LIX. 
AmpELIs, Lin. 
The Crown-Birds have the depressed bill of the Fly-catchers in general, 
but it is somewhat shorter in proportion, tolerably broad, and slightly 
arcuated. 
Those in which it is the most pointed and strong, have still a decidedly 
insectivorous regimen: they are called Pravuau, from their note—the 
Queruta, Vieill. They inhabit America, where they pursue insects, in 
flocks, in the woods +. 
Tue Common Crown-Birps, 
Whose bill is rather weaker, besides insects, feed on berries and tender 
fruits. They inhabit the moist grounds of America, most of the males 
being remarkable, at the pairing season, for the brilliancy of their purple 
and azure plumage. During the rest of the year both sexes are grey or 
brown. 
A. carnifex, .; L’Ouette, Enl. 378; Spix, V. The calotte, 
rump, and belly scarlet; the rest brownish red; fourth quill of the 
wing narrowed, shortened, and tough, or something like horn. 
A. pompadora, L.; Le Pompadour, Enl. 279. A fine light 
purple; wing-quills white; the barbs of the great coverts are stiff 
and arranged on two planes in an acute angle, like a roof. 
* It is the Choucas chauve, Buff., Enl. 521 (Corvus calvus, Gm.), the Oiseau mon 
pére of the negroes of Cayenne, Vaill., Ois. d’ Am. et des Indes, pl. xxix. 
{+ Here comes the Common Piauhau ; black, with a purple throat (Muse. rubricollis, 
Gm.), Enl. 381; Vieill. Gal. 115, and the Great Piauhau, entirely purple (Cotinga 
rouge, Vail., Ois. de l Afr. et des Indes, pl. xxv and xxvi, Coracias militaris, Shaw). 
La Cotinga gris (Amp. cinerea), nl. 699, is more nearly allied to the Piawhaus than 
the common Crown-birds. 
The Piauhau @ gorge aurore (Coracias scutata, Lath. or Coracina scutata, 1.) ye @ol. 
40, has a narrower bill, and approaches more to Cephalopterus. 
