352 BULLETIN 50, UNITED STATES NATIONAL MUSEUM 



marked with irregular black spots having a brownish external suffusion, 

 the belly transversely spotted or barred with the same, the sides and flanks 

 with irregular broad U-shaped marks inclosing a pale cinnamon space, the 

 margins of the feathers soiled whitish ; under tail coverts much tinged with 

 pale rusty and heavily spotted with black. Bill brownish black, with basal 

 half of under mandible light colored ; feet deep horn-brown." (R. R.) 



Immature. — Like the adult of the same sex but with the outermost 

 primaries more pointed terminally. 



Juvenal (sexes alike). — Upperparts of head and body as in the adult 

 female, but the interscapulars, scapulars, and feathers of the upper back 

 with narrow, white shaft streaks ; the inner secondaries more completely 

 barred with pale pinkish buff; the feathers of the lower back, rump, and 

 upper tail coverts paler, less blotched with blackish, the ground color buffy 

 wood brown; chin and throat paler, more whitish; breast buffy wood 

 brown, each feather with a pale buffy-whitish shaft streak ; abdomen pale 

 buffy with a grayish tinge, transversely spotted with dusky wood brown ; 

 flanks, thighs, lower abdomen, and under tail coverts strongly washed with 

 pale cinnamon-buff; bill and feet (in dried skin) dark pinkish orange. 



Natal down. — Apparently unknown. 



Adult male.— ^mg 92-94 (93) ; tail 49.5-52.5 (51.0) ; culmen from 

 base 14.5-15.2 (14.8) ; tarsus 27.7-28.1 (27.9) ; middle toe without claw 

 24.1-25.2 (24.7mm.).^» 



Adult female.— Wing 86-95 (92) ; tail 48-51 (48.8) ; culmen from 

 base 14.4-15.7 (14.8) ; tarsus 26.4-28.5 (27.7) ; middle toe without claw 

 23.1-25 (23.8 mm.). « 



Range. — Resident in the pine-forested parts of British Honduras, the 

 Peten district of northern Guatemala, and through the Caribbean lowlands 

 of Honduras east to Cantarranas and the Segovia River. 



Type locality. — Honduras. 



Ortyx nigrogidaris Gould, Proc. Zool. Soc. London, 1842 (1843), 181 (Mexico; coll. 

 Earl of Derby; ^Honduras) ; Monogr. Odontoph., pt. ii, 1846, pi. 4 and text, 

 part (Honduras). — Moore, Proc. Zool. Soc. London, 1854, 63 (Belize, British 

 Honduras). 



[Ortyx] nigrogularis Gray, Handlist, ii, 1870, 273, no. 9781 (Honduras). — Sclater 

 and Salvin, Nom. Av. Neotr., 1873, 137, part (British Honduras). 



Ortyx nigrigularis Sclater and Salvin, Ibis, 1859, 225, part (Belize, British 

 Honduras) . 



Colinus nigrogularis segoviensis Ridgway, Proc. U. S. Nat. Mus., x, 1888, 593 

 (Rio Segovia, e. Honduras; coll. U. S. Nat. Mus.). — Stone, Proc. Acad. 

 Nat. Sci. Philadelphia, Ixxxiv, 1932, 302 (Honduras; Segovia River and Can- 

 tarranas). — Peters, Check-list Birds World, ii, 1934, 49. — Van Tyne, Misc. 

 Publ. Mus. Zool. Univ. Michigan, No. 27, 1935, 12 (Pacomon and La Libertad, 

 Peten, Guatemala; crit. ; spec.).— Hellmayr and Conover, Cat. Birds Amer., 



'Four specimens. 

 ' Seven specimens. 



