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 witli 

 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 

 v/ith 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 huffy 

 wood brown; chin and throat paler, more whitish; breast huffy 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 dozvn. — Apparently unknown. 



Adult male.— Wing 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 (24.7 mm.). 39 



Adult female.— Wing 86-95 (92); tail 4&-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.). 40 



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 nigrogularis 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. 



