468 BIRDS OF THE REPUBLIC OE PANAMA PART 2 



KEY TO SPECIES OF BUCCONIDAE 



1. Breast and abdomen gray, bill orange-red; larger, wing 130 mm. or more. 



White-fronted nunbird, Monasa morphoeus, p. 486 



Breast and abdomen not plain gray, bill black or dull colored ; smaller, wing 



120 mm. or less 2 



2. Under surface white ; heavily streaked with black, or with a single narrow 



black band across breast 3 



Under surface mainly buff or cinnamon 6 



3. Entire under surface streaked heavily with black. 



Lanceolated monklet, Micromonacha lanceolata, p. 483 

 A single black band, narrow or broad, across the breast 4 



4. Hindneck wholly black, scapulars with a white spot, tail spotted with white ; 



small, bill more slender and less than 25 mm. long. 



Pied puffbird, Notharchus tcctus subtectus, p. 473 



A white collar on hindneck, tail without white spots ; larger ; bill broad and 



heavy, more than 30 mm. long 5 



5. Forehead and sides of neck white; larger. 



White-necked puffbird, Notharchus macrorhynchos hyperrhynchus, p. 468 

 Forehead black, like crown; black of lower surface extensive covering side 

 of neck, breast, and lower foreneck. 



Black-breasted puffbird, Notharchus pectoralis, p. 471 



6. Color pattern plain, without bars, spots, or streaks ; small, wing not more than 



60 mm. 



Gray-cheeked nunlet, Nonnula frontalis stulta, p. 484 

 Plumage variegated with bars, spots or streaks 7 



7. Upper surface barred heavily with black ; feathers of rictal area normal. 



Barred puffbird, Nystalus radiatus, p. 476 

 Spotted lightly with buff on back and wings; feathers of rictal area white, 

 narrow, pointed and distinctly elongated. 



White-whiskered puffbird, Malacoptila panantcnsis, p. 479 



NOTHARCHUS MACRORHYNCHOS HYPERRHYNCHUS 

 (Sclater) : White-necked Puffbird; Martin del Monte 



Figure 57 



Bucco hyperrhynchus Sclater, Proc. Zool. Soc. London, pt. 23, 1855 (January 

 22, 1856), p. 193, pi. 105. (Upper Amazon.) 



A heavy-bodied, short-tailed bird with strong bill, white forehead 

 and under parts ; with a broad black band across breast. 



Description. — Length 235-255 mm. Bill thick and heavy. Adult 

 (sexes alike), lores, crown, and upper back black to slate-black; 

 rest of upper surface, including wings and central rectrices, blackish 

 slate ; lateral rectrices very dark gray, all tipped narrowly with white ; 

 wing coverts, secondaries, back, rump, and upper tail coverts tipped 

 very narrowly with white ; forehead, broad line over eye, band across 

 hindneck, foreneck, side of neck, upper breast, abdomen, and under 



