208 AORTH AMERICAN BIRDS. 



(P. Sexes unlike in color; male uniform black, female black, vermicu- 



lated or irroguhu-ly bari-od with rufous Penelopina} 



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

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

 a-. Cere densclj- covered with erect velvet-like feathers, coneealiug the nostrils; 

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

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



Gencs ortalis Merkem. (Page 208, pi. LXL, fig. 2.) 



Species. 



Common Chauacters (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'. 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. 

 Hab. Western Mexico, north to Souora. 



O. wagleri Gkay. Wagler's Chachalaca.' 

 a''. Ilead not conspicuously crested, all the feathers reclining backward; posterior 

 lower parts and tips of tail-feathers j^alc brownish, light ochraceous, or 

 whitish. 

 l^. Quills olive, or olive-grayish. 



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

 isabella-color, or bufty brownish ; tip of tail varjMug from isabella- 

 color to white. 

 d}. Bellj' dull light brownish or else pure white. 

 e'. Tip of tail white. 



/'. Belly pure while ; length about 10.50, wing 7.30, tail 8.00. 

 Hab. West coast of Guatemala and Nicaragua. 



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

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

 plain grayish olive, faintly glossed with bronzy green- 

 ish, more dull slaty on hea<l and neck ; tail dusky bronzy 

 greenish, changing to dull bluish, broadly tipped with 

 white, except middle feathers ; middle lino 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 



' Penelopina Rsicn., Taubcn. 1862, 152. Type, Penelope tiijrn Fras. 

 » Orenphaih QnKY, Gen. B. iii. 1844, 4.S5. Type, 0. derbiamu Grav. 

 » Ortalida K,i,jl,ri GitAV, Li.st Gallin. Brit. Mus. 1807, 11. 



* Penelope leueogatter Gould, P. Z. S. 1843, IU5. Ortalida Icucogattin Gray, List Gallin. Brit. Mus. 

 1867, 13. 



