296 BULLETIN 50, UKITED STATES NATIONAL MUSEUM 



LOPHORTTX GAMBELn FUtVIPECTUS (Nelson) 

 FULVOUS-BHEASTED QuAIL 



Adult male.^Simila.T to tliat of the nominate race, but with the abdomen 

 more deeply colored — light warm buff; the pale edging of the scapulars 

 and inner secondaries also buflfier and the tack slightly more washed 

 with olive-brown.^* 



Adult female. — Similar to that of the nomiiiate race, but with the ab- 

 domen more deeply colored — light warm buff;, the pale edgings of the 

 inner remiges also buffier ; and the upperparts more; extensively tinged with 

 huffy brown. In the majority of- specimens (but not in all) there is a 

 faint but noticeable white line beginning behind tlie eye and posteriorly 

 limiting the cheeks and sides of the throat, and another along the antero- 

 lateral edge of the crown on each side. The crown and occiput average 

 more ruf escent in this race than in any of the others. 



Adult male.-^Wmg 106-115 (112) ; tail 88-101 (95.6) ; culmen from 

 base 14.8-16.2 (15.4) ; tarsus 30.5-33.0 (31.1) /middle toe without claw 

 27.1-28.3 (27.7 mm.).*^ 



Adult female.— Wing 105-118 (110.6); tail 85r98 (89.4); culmen 

 from base 14.9-16.7 (15.7) ; tarsus 29.0-31.3 (30.1) ; middle toe without 

 claw 26.3-26.9 (26.6 mm.).88 



Range. — Resident in north-central to southwestern Sonora (Camoa, 

 Obregon, Opodepe, Tesia, Tbbari Bay, Agiabampo; 25 miles southeast 

 of Guaymas),,intergrading with gambelii near Guaymas. 



Type locality. — Camoa, Rio Mayo, Sonora. 



Lophortyx gambelii (not of Gambel) Lawrence, Mem. Boston Soc. Nat. Hist., ii, 

 1874, 307 (Sonora). 



Lophortyx gambeli Belding, Proc. U. S. Nat. Mus., vi, 1884, 344 (Guaymas).— 

 Salvin and Godman, Biol. Centr.-Amer., A.ves,,iii, 1903, 292, part (Santa Bar- 

 bara, Hermosillo, Guaymas, and Rio Mayo, Sonora). 



Callipepla gambeli Cooke, Bird Migr. Mississippi Valley, 1888, 103, part (nw. 

 Mexico). — AiiEN, Bull. Amer. Mus. Nat. Hist., v, ,1893, 33 (Santa Barbara, 

 Sonora). — Jouy, Prbc. U. S. Nat. Mus., xvi, 1B94, 790 (Guadalajara, Jalisco). 



Callipepla gambeli fulvipectus Nelson, Aulc, xvi, 1899, 26 (Catttoa, Rio Mayo, sw. 

 Sonora; coll. U.'S; Nat. Mus.); xix, 1902, 388 (crit.).— Thayer and Bangs, 

 Proc. Biol. Soc. Washington, xix, 1906, 18 (Opodepe, north-central Sbnbra). 



[Lophortyx] fulvipectus Sharpe, Hand-list, i, 1899, 44. ' ' • ' ' 



Lophortyx gambelii fulvipectus van Rossem, Trans. San Diego Soc; Nat. Hist., vi, 

 1931, 245 (Sonora— Obregon, Tesia, Tobari Bay, Agiabatnpo) ; vii,1932, 132 in 

 text (Sonora; colors of soft parts). — Peters, Check-list Birds World, ii, 

 1934, 46. , . 



Lophortyx gambelii gambelii Hellmayr and GonoVer, Cat. Birds Amer.,,i, No. 1, 

 1942, 235, part (Camoa, Sonora). 



*" These differences hold only in freshly plumaged birds. The buffy tones appear to 

 fade away fairly rapidly so that by winter speciniens of fulvipectus. are indistinguish- 

 able from gambelii. This is also true of the females. 



" Seven specimens from Sonora. 



*■ Eleven specimens from Sonora. 



