VI GALBULIDAE A447 
behind ; fully developed lateral rectrices ; and no aftershaft. The 
habits of the two groups are similar, while the aforesaid English 
name probably refers to the puffy appearance of the head while 
the ‘birds are resting. 
They are black, brown, or 
rufous in hue, relieved 
by white markings; the 
bill being red in Lucco 
chacuru, Bb. maculatus, 
B. striatipectus, and B. 
collaris, and red or yellow 
in Monacha. The entire 
range of the Family, ex- 
tending from Guatemala 
and Honduras to Argen- 
tina, 1s occupied by the 
twenty hook-billed species 
of Bucco. B. dysont is 
blue-black, with a white 
$/ 
under surface crossed by \S if 
Fic. 93.—Puff-bird. Bucco hyperrhynchus. 7 3, 
a broad black band, and 
a white forehead and nape; B. hyperrhynchus is similar with a 
larger bill; £4. collaris differs in its rusty-red upper parts barred 
with black; £&. bicinetus has these mottled with brown, and two 
black bands on its buff breast; B. maculatus has a rufous chest 
and black spots on the white belly ; and so forth. The half-dozen 
species of Malacoptila, extending from Guatemala to Brazil, are 
brownish birds, striated with rufous; the lower parts being more 
or less fulvous, often with black and white breast-bands. The 
diminutive Wicromonacha lanceolata of Upper Amazonia is rutescent 
above; the forehead and under parts are relieved by black, while 
each outer rectrix has a black bar. The Nunlets (Vonnula 
rubecula and its congeners) are also among the smallest of the 
Family, and are distributed from Panama to Peru and Brazil; 
they are brown above and ferruginous beneath, with a little 
white.  Hapaloptila castanea of Colombia and Ecuador is a 
hook-billed species, with olive-grey upper and chestnut under 
parts, a white forehead and throat.  J/onacha comprises about 
seven large blue-black forms, ranging from Nicaragua to South- 
East Brazil and Bolivia, some of which have white on the wings 
