322 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Breeding along the western and northern borders of the Colorado 

 Desert, from Inyo County (Owens Lake, etc.) to San Diego County 

 (Bongo Spring; Santa Ysabel), southeastern California: migrating 

 southward to the Arizona-Mexico boundary line. 



Otocoris alpestris arenicola (not of Henshaw) Fisher (A. K.), North. Am. Fauna, 

 no. 7, 1893, 66, part (Coso Vailey, Mojave Desert, and Darwin, s. e. California). 



Otocoris alpestris chrysolsema (not xilauda chrysolaema Wagler) Fisher (A. K.), 

 North Am. Fauna, no. 7, 1893, 67, pai;t (Panamint Mts., s. e. California). 



Otocoris alpestris amrnophila Oberholser, Proc. U. S. Nat. Mus., xxiv, no. 1271, 

 June 9, 1902, S49 (Coso Valley, s. e. California; coll. U. §. Nat. Mus.). 



OTOCORIS ALPESTRIS RUBEA Henshaw. 

 RUDDY HORNED LARK. 



Most like 0. a. actia, but much more rufescent, the occiput, hind- 

 neck, shorter upper tail-coverts, lesser wing-coverts, and sides of 

 breast deep chestnut-vinaceous or dark vinaceous-rufous, the back 

 decidedly brown, broadly streaked with darker. Adult female most 

 like that of 0. a. oaxacse, but darker and browner above, with hind- 

 neck distinctly rufescent; similar also to that of 0. a. alpestris, but 

 much smaller, back browner with spots less dark, and hindneck and 

 sides of breast more rufescent. Young '^ similar to that of 0. a, 

 chrysolsema, but upper parts browner and not quite so dark, and 

 chest more buffy, with spots much less dark. (The extreme rufescent 

 type.) 



Adult male.— Length (skins), 153-165 (159); wing, 94.5-105 

 (99.6); tail, 64.5-71 (67.2); exposed culmen, 10-12 (11); tarsus, 

 20-23.5 (21.7); middle toe, 10.5-13 (11.8).^ 



Adult female.— Length (skins), 145-152 (148); wing, 89-95.5 

 (92.4); tail, 55-62.5 (59.5); exposed culmen, 9.5-11.5 (10.1); tarsus, 

 20-22 (20.8); middle toe, 10.5-12 (11.3).^ 

 . Sacramento Valley, California.^' 



Alaudariifa (not of Gmelin) Heermann, Journ. Ac. Nat. Sci. Philad., ii, 1852, 265, 



part 2 (plains of California). 

 Otocoris alpestris (not Alauda alpestris Linnaeus) Newberry, Rep. Pacific R. R., 



Surv., X, pt. iv, chap, ii, 1855, 88, part (Sacramento Valley). 

 [Eremophila cornuta.] Var. chrysolaema (not Alauda chrysolaema Wagler) Baird, 



Rep. Pacific R. R. Survey, ix, 1858, 403, part. 

 Eremophila alpestris. . . var. chrysolsema Coues, Check List., 1873, no. 53a, part. 



a From Calaveras County. 



& Fifteen specimens. 



c Twelve specimens. 



d Although the alleged type locality of this form is Stockton, it is very doubtful 

 whether the type really came from that place; in fact the locality is queried on the 

 original label. The birds breeding in the vicinity of Stockton are, as Mr. Oberholser 

 states (Proc. U. S. Nat. Mus., xxiv, 1902, 852), more like 0. a. actia than 0. a. rubea, 

 and, though not typical of the former, are best referi'ed to it. 



