ROLLERS. 535 
not unpleasingly. In one species the two outside feathers of the tail 
are long filaments, terminating in square-pointed feathers. 
The genus Cofinga is characterised by a short, flattened, curved, 
and stout bill. It embraces, according to several authorities, as 
sub-genera the Manakins (a species of which has been previously 
described in p. 514), Rollers, and Chatterers. 
The Golden-winged Manakin (Pifra chrysoptera, Fig. 245), the 
most beautiful species, is a bird about the size of a Thrush; it 
inhabits Brazil and Guiana, and is remarkable, during the pairing 
season, for its brilliant and variegated plumage. It frequents damp 
localities in the midst of great forests, and its food consists of seeds, 
fruit, and insects. It is very shy in its nature, and cannot habituate 
itself to captivity. Its rich colours alone cause it to be admired, 
for its voice is by no means melodious, and its flesh is too bitter 
for human food. 
The Rollers (Coracias) owe their name to their habit of moving 
stones and sticks, under which they find their principal sustenance ; 
but they also feed on flies and the larvee of insects. They differ from 
the preceding families in their habitat and the colour of their plumage. 
The former are only met with in America; and the latter are 
