BIRDS OF NORTH AND MIDDLE AMERICA 23 



bb. Inner remiges bronze-green, not coppery auburn. 



c. Crown and upper back greenish. Penelope purpurascens aequatorialis (p. 2S) 

 cc. Crown and upper back dull metal bronze, not greenish. 



Penelope purpurascens brunnescens (extralimital)"' 



penelope pukpukascens purpurascens waeur 



Northern Crested Guan 



Adult (sexes alike). — Forehead, crown, occiput, and hindneck dark 

 fuscous with a very slight purplish to greenish bronzy sheen; scapulars, 

 interscapulars, upper wing coverts, and remiges similar but sheen more 

 greenish, the outer primaries less greenish, more fuscous-black, the inter- 

 scapulars, scapulars, and upper wing coverts with narrow lateral, but 

 not terminal, white edges; back and rump dull dusky sepia to mummy 

 brown; upper tail coverts and rectrices like the inner remiges but the 

 tail feathers with a little brighter sheen and averaging slightly more olive, 

 less bronzy ; lores bare except for some sparse black bristlelike feathers ; 

 circumocular area bare; chin and upper throat also bare except for a 

 very few black hairlike feathers, a malar band of feathers from the 

 posterior end of the mandibular ramus, broadening over the auriculars 

 to extend dorsad to the feathers of the occiput and caudally to the sides 

 of the upper throat, dark fuscous ; rest of sides of neck, lower throat, 

 and breast dark fuscous with a faint bronzy brownish gloss, each feather 

 laterally narrowly edged with white; abdomen, sides, flanks, thighs, and 

 under tail coverts like the back and rump; under wing coverts dark 

 fuscous; iris carmine-red; circumorbital skin and lores violaceous-black; 

 bill black; upper part of gular skin violaceous-black, the lower part 

 carmine-red; tarsus carmine-red to magenta. 



Immature (sexes alike). — Similar to the adult but with the white marks 

 on the interscapulars, scapulars, and upper wing coverts much less de- 

 veloped; inner remiges and median rectrices with a little more purplish 

 sheen. 



Juvenal (only one male and one unsexed bird seen). — Much paler than 

 adult or immature birds, the fuscous of the latter replaced by dusky 

 earth brown to dull sepia; no white marks on the upperparts and very 

 faintly present on the breast; scapulars, upper wing coverts, inner 

 secondaries, upper tail coverts, and rectrices sepia abundantly flecked and 



Bull. Mus. Comp. Zool., Ixx, 1930, 154 (type spec; crit.). — P[enelope] purpurascens 

 perspicax Hellmayr and Conover, Auk, xlix, 1932, 332 (crit.; distr.). — Penelope 

 purpurascens perspicax Peters, Check-list Birds World, ii, 1934, 13. — Heixmayr and 

 Conover, Cat. Birds Amer., i. No. 1, 1942, 137. 



"'■Penelope purpurascens brunnescens Hellmayr and Conover. — P[enelope] pur- 

 purascens brunnescens Hellmayr and Conover, Auk, xlix, 1932, 333 (Rio Cogollo, 

 Peri j a, Zulia, Venezuela; coll. of H. B. Conover; crit). — Penelope purpurascens 

 brunnescens Peters, Check-list Birds World, ii, 1934, 13. — Hellmayr and Conover, 

 Cat. Birds Amer., i, No. 1, 1942, 137. 



