BIRDS OP NORTH AND MIDDLE AMERICA 375 



tinged, especially posteriorly, with cinnamon, and indistinctly banded with 

 blackish; breast, sides and upper abdomen olive-brown, the feathers 

 banded toward the tip with black and with buffy white, the pale bands 

 being distally pointed V's, the black terminal ones being divided medially 

 by the extension of the subterminal white one along the shaft ; abdomen, 

 flanks, thighs, and under tail coverts as in adult but darker. 



Juvenal (olive-brown phase). — Similar to the preceding but less brown- 

 ish, more dusky olive-brown above and below; the greater and median 

 upper wing coverts and the interscapulars with conspicuous white shafts 

 terminally enlarged into small white triangles ; the black blotches greatly 

 reduced on the scapulars, upper back, and upper wing coverts; all the 

 remiges tawny, abundantly and finely freckled and vermiculated with 

 blackish over both webs ; breast, sides, and upper abdomen sepia, the 

 feathers with narrow white shafts which spread terminally into proximally 

 pointed triangles of white, the sepia area indistinctly barred and flecked 

 with mummy brown to dark sepia.^^ 



Natal dozvn (male only seen). — Forehead, anterior and lateral parts of 

 crown, and sides of occiput warm buff darkening posteriorly to light 

 ochraceous-buff ; most of occiput, and narrower center of crown extending 

 in a thin median line to the base of the culmen tawny russet ; chin, throat, 

 cheeks, and auriculars pale warm buff ; spinal tract dark russet ; rest of 

 upperparts light ochraceous-salmon flecked with dusky ; underparts of body 

 pale warm buff tinged with olive-gray. 



Adult male.—Wmg 134-153.5 (143.8) ; tail 69.5-76.5 (62.2) ; culmen 

 from base 19.3-22.6 (19.4) ; tarsus 41.5-48.9 (45.6) ; middle toe without 

 claw 33.1-39.6 (36.3 mm.).«« 



Adult female.— Wmg 134.5-148.5 (139.8) ; tail 61-72.5 (67.0) ; culmen 

 from base 18.2-21.0 (19.7) ; tarsus 41.5-47 (43.9) ; middle toe without 

 claw 32.5-38 (35.5 mm. ).«7 



Range. — Resident in forested areas of the subtropical zone of south- 

 eastern Mexico (from Veracruz, Tabasco, and Oaxaca south to Chiapas 

 and Campeche) south through Guatemala, British Honduras, Honduras, 

 Nicaragua, and Costa Rica to extreme western Panama, as far as Volcan 

 de Chiriqui. In Costa Rica its altitudinal range is from 5,000 feet to 

 timberline. 



Type locality. — "Bay of Honduras." 



Ortyx guttata Gould, Proc. Zool. Soc. London, 1837 (1838), 79 (Bay of Honduras; 

 types now in coll. Brit. Mus.). 



'° The Juvenal plumages of the two phases are still to be elucidated. The material 

 examined presents too many differences to be "normal" for color varieties. What 

 is needed is juvenal material collected ivith the parents to be certain of the 

 identification. 



°* Thirty-five specimens from Mexico, Guatemala, Honduras, Nicaragua, Costa 

 Rica, and Panama. 



" Sixteen specimens from Mexico, Guatemala, Honduras, Costa Rica, and Panama. 



