BIRDS OF NORTH AND MIDDLE AMERICA 269 



64 (rare straggler).— Burleigh and Loweey, Occ. Pap. Mus. Zool., Louisiana 

 State Univ., No. 8, 1940, 98 (w. Texas ; Guadalupe Mountains ; abundant in open 

 desert).— Long, Trans. Kansas Acad. Sci., xliii, 1940, 441 (Kansas; fairly com- 

 mon resident in southwestern part of State).— Hellmayr and Conover, Cat. 

 Birds Amer., i, No. 1, 1942, 231 (syn.; distri.).— Amadon, Auk, Ix, 1943, 22 

 (body weight and egg weight). 



CALLIPEPLA SQUAMATA CASTANOGASTRIS Brewster 



CHESTNXn'-BELLIED ScALED PARTRIDGE 



Adult male. — Similar to that of Callipepla squamata pallida but with 

 the posterior lower parts more and deeper buffy to ochraceous and the 

 abdomen with an extensive median patch of dark rusty chestnut; the 

 scapulars and upper wing coverts somewhat darker grayish brown ; inter- 

 scapulars and breast darker — light neutral gray to neutral gray; head 

 darker and more brownish. 



Adult female. — Like the male but with little or none of the dark rusty 

 chestnut on the midabdomen. 



Juvenal. — Like that of C. s. pallida. 



Natal down. — Like that of C. s. pallida. 



Adult male.—Wing 109-117.5 (115.2) ; tail 77-86 (82) ; culmen from 

 base 16.1-17.2 (16.8); tarsus 31-34.5 (32.8); middle toe without claw 

 25-28.5 (26.3 mm.).^^ 



Adult female.— Wmg 109.5-117.5 (113.7) ; tail 75.5-83.5 (79.7) ; cul- 

 men from base 15.2-16.8 (16.1) ; tarsus 28-33 (31) ; middle toe without 

 claw 24-27 (25.3 mm.).^* 



Range. — Resident from southeastern Texas, in the lower Rio Grande 

 valley, west to Kinney, Dimmit, and Maverick Counties, east to Laredo 

 and to Cameron County, and to northern Tamaulipas (Nuevo Laredo; 

 Reynosa), northern Nuevo Leon (Camargo, China, Rodriguez, Mier), 

 and northern Coahuila (Sabinas). 



Type locality. — Rio Grande City, Texas. 



Callipepla squamata (not Ortyx squamatus Vigors) McCall, Proc. Acad. Nat. Sci. 

 Philadelphia, 18S1, 222, part (Camargo, Nuevo Leon). — (?) McCown, Ann, 

 Lye. Nat. Hist. New York, vi, 1853, 9 (Texas; habits).— Cassin, lUustr. Birds 

 California, Texas, 1854, 129, part, pi. 19.— Baird, Rep. Pacific R. R. Surv., ix, 

 1858, 646, part (Nuevo Leon); Cat. North Amer. Birds, 1859, No. 476, part; 

 Rep. U. S. and Mex. Bound. Surv., ii, pt. 2, 1859, 23, part (Nuevo Leon) ; in 

 Cooper, Orn. California, Land Birds, 1870, 556, part. — Heermann, Rep. Pacific 

 R. R. Surv., X, No. 1, 1859, 19, part (San Antonio, Tex.; habits). — Dresser, 

 Ibis, 1866, 28 (s. Texas).— Butcher, Proc. Acad. Nat. Sci. Philadelphia, 1868, 

 ISO (Laredo, Tex.). — Baird, Brewer, and Ridgway, Hist. North Amer. Birds, 

 iii, 1874, 487, part.— Coues, Check List North Amer. Birds, 1874, No. 393, part ; 

 ed. 2, 1882, No. 577, part; Birds Northwest, 1874, 441, part.- Merrill, Proc. 

 U. S. Nat. Mus., i, 1878, 160 (Ringgold Barracks and Hidalgo, s. Texas).— 



' Ten specimens from Texas and from Tamaulipas and Nuevo Leon, Mexico. 

 ' Eight specimens from Texas and from Tamaulipas and Nuevo Leon, Mexico. 



