BIRDS OF NORTH AND MIDDLE AMERICA 55 



Adult male.— Wing 235-245 (239.5) ; tail 281-289 (286.2) ; exposed 

 culmen 23-25 (24.1); tarsus 75-79 (77-0); middle toe without claw 

 49.2-54 (52.1 mm.).^^ 



Range. — Occurs in the humid forests of the Upper Tropical Zone in 

 Nicaragua (Ocotal and San Rafael del Norte). 



Type locality. — Ocotal, Nicaragua. 



Penelopina nigra Salvin and Godman, Ibis, 1892, 328 (Matagalpa, Nicaragua) ; 

 Biol. Centr.-Amer., Aves, iii, 1902, 277, part (Matagalpa, n. Nicaragua).— 

 Griscom, Bull. Amer. Mus. Nat. Hist., Ixiv, 1932, 100, part (northern Nica- 

 ragua) .—Peters, Check-list Birds of World, ii, 1934, 21, part (Nicaragua). 



Penelopina nigra rufescens van Rossem, Trans. San Diego Soc. Nat. Hist., vii. 

 No. 31, 1934, 365 (Ocotal, Nicaragua; descr. ; meas.). — Hellmayr and Con- 

 over, Cat. Birds Amer., i. No. 1, 1942, 184 (syn. ; distr.). 



Genus CHAMAEPETES Wagler 



Chamaepetes Wagler, Isis, 1832, 1227. (Type, by monotypy, Orlalida goudotii 



Lesson.) 

 Chamapetes (emendation) Gray, List Gen. Birds, 1840, 59. 

 Penelopsis (not of Bonaparte, 1856) Reichenbach, Voll. Nat. Tauben, 1861, 147. 



(Type, Penelope rufiveniris Tschudi.) 



Medium-sized Cracidae (length about 520-638 mm.) with gular region 

 completely feathered and three outer primaries with terminal portion 

 abruptly attenuated. 



Bill relatively small but rather elongated (more than half as long 

 as head, the culmen decidedly longer than the mesorhinium), rather de- 

 pressed, its width at base of culmen equal to or greater than its depth 

 at same point; culmen broadly rounded (not ridged) ; nostril relatively 

 rather large, longitudinal, elliptical or fusiform, anteriorly nearly in con- 

 tact with the rhinotheca, a cartilaginous lobe or tubercle distinctly visible 

 within the posterior half (more or less). Entire loral and orbital regions, 

 sides of forehead, and anterior half of malar region nude, but with scant, 

 minute bristles, at least on malar region and sides of frontal region, but 

 entire throat completely feathered. Wing moderately large, relatively 

 very broad, the longest primaries extending but slightly beyond tips of 

 longest secondaries; sixth to eighth primaries longest, the first (outer- 

 most) nearly three-fourths as long as the longest, the three outer primaries 

 strongly bowed or incurved, and with terminal portion abruptly and 

 conspicuously attenuated. Tail decidedly shorter than wing (about five- 

 sixths as long), decidedly to rather strongly rounded, the rectrices (12) 

 broad, with broadly rounded tips. Tarsus moderately long (about one- 

 fourth to nearly one-third as long as wing), relatively rather slender, the 

 acrotarsium with a single series of large, transverse scutella, the planta 

 tarsi with a more or less continuous series of transverse or hexagonal 



' Four specimens from Nicaragtia. This race is only doubtfully distinct. 



