208 NORTH AMERICAN BIRDS. 



d 2 . Sexes unlike in color ; male uniform black, female black, vermicu- 



lated or irregularly barred with rufous Penelopina. 1 



<?. 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. 2 



Genus ORTALIS Merrem. (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. 3 

 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 1 . Quills olive, or olive-grayish. 



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

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

 color to white. 

 d 1 . Belly dull light brownish. 

 e\ Tip of tail white. 



f 1 - Belly pure white; length about 16.50, wing 7.30, tail 8.00. 

 Sab. West coast of Guatemala and Nicaragua. 



O. leucogastra (Gould). White-bellied Chachalaca. 4 

 /'- 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, O. derbianus Gray. 



3 Ortalida wagleri Gray, List Gallin. Brit. Mua. 1867, 11. 



* Penelope leucogaster Gould, P. Z. S. 1843, 105. Ortalida leucogastra Gray, List Gallin. Brit. Mus. 

 1867, 13. 



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