VI 



GALBULIDAE 



447 



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 Bucco 

 chacuru, B. maculatus, 

 B. striatipectus, and B. 

 collar is, and red or yellow 

 in Monacha. The entire 

 range of the Family, ex- 

 tending from Guatemala 

 and Honduras to Argen- 

 tina, is occupied by the 

 twenty hook-billed species 

 of Bucco. B. dysoni is 

 blue-black, with a white 

 under surface crossed by 

 a broad black band, and 

 a white forehead and nape ; B. hyperrliynclius is similar with a 

 larger bill ; B. collaris differs in its rusty-red upper parts barred 

 with black; B. "bicinctus 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 Micromonacha lanceolata of Upper Amazonia is rufescent 

 above ; the forehead and under parts are relieved by black, while 

 each outer rectrix has a black bar. The Nunlets (Nonnula 

 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. Monacha comprises about 

 seven large blue-black forms, ranging from Nicaragua to South- 

 East Brazil and Bolivia, some of which have white on the wings 



' o 



FIG. 



