208 NORTH AMERICAN BIRDS. 



d*. Sexes unlike in color ; male uniform black, female black, vermicu- 



lated or irregularly barred with rufous Penelopina. 1 



c 2 . Smaller (length less than 2 feet) ; throat without median " dewlap" ; plu- 

 mage plain, the tail with whitish or rufous tip. Ortalis. (Page 208.) 

 a 2 . Cere densely covered with erect velvet-like feathers, concealing the nostrils; 

 upper part of tarsi feathered in front and on sides. (Subfamily Oreophasince.') 

 Male with a tubercular vertical horn on top of head Oreophasis." 



GENUS ORTALIS MERKEM. (Page 208, pi. LXL, fig. 2.) 



Species. 



COMMON CHARACTERS (of Mexican and Central American species). Above plain 

 olive-brownish or olive-grayish, the tail darker and with a distinct greenish or 

 bluish gloss ; anterior lower parts colored like upper surface, the rest of lower parts 

 different (chestnut-rufous, light brownish, or dull whitish). 



a 1 . Head with a conspicuous crest, the anterior feathers of which incline forward, 

 over base of bill ; posterior lower parts and tips of tail-feathers chestnut- 

 rufous; length about 2 feet (or more), wing 9.50-10.50, tail 11.00-12.00. 

 Hob. "Western Mexico, north to Mazatlan. 



O. wagleri GRAY. Wagler's Chachalaca. 8 



a 2 . Head not conspicuously crested, all the feathers reclining backward ; posterior 

 lower parts and tips of tail-feathers pale brownish, light ochraceous, or 

 whitish. 

 b l . Quills olive, or olive-grayish. 



c 1 . Wing not more than 8.50 ; feathers of neck blended ; under tail-coverts 

 isabella-color, or buify brownish ; tip of tail varying from isabella- 

 color to white. 



d 1 . Belly dull light brownish. 

 e l . Tip of tail white. 



/*. Belly pure white ; length about 16.50, wing 7.30, tail 8.00. 

 Hob. West coast of Guatemala and Nicaragua. 



O. leucogastra ( GOULD). White-bellied Chachalaca.* 

 / 2 . Belly dull fulvous-brown, or isabella-color. Adult: Above 

 plain grayish olive, faintly glossed with bronzy green- 

 ish, more dull slaty on head and neck ; tail dusky bronzy 

 greenish, changing to dull bluish, broadly tipped with 

 white, except middle feathers ; middle line of throat 

 blackish ; lower parts generally dull brownish, some- 

 what paler on middle of belly, but deepening into more 

 decided, or more fulvous, brownish on flanks and under 



1 Penelopina REICH., Tauben. 1862, 152. Type, Penelope nigra FRAS. 



2 Oreophasis GRAY, Gen. B. iii. 1844, 485. Type, 0. derbianus GRAY. 

 8 Ortalida wagleri GRAY, List Gallin. Brit. Mus. 1867, 11. 



4 Penelope leucogaoter GOULD, P. Z. S. 1843, 105. Ortalida leucogattra GRAY, List Gallin. Brit. Mus. 

 1867, 13. 



