248 BULLETIN 50, TJNITED STATES NATIONAL MUSEUM. 



712 (Nicasio, Marin Co.) .—Anthony, Zoe, iv, 1893, 242 (base of San Pedro 

 Martir Mts., n. Lower California). — Fisher, North Am. Fauna, no. 7, 1893, 

 98 {s. fork Kern E.; near San Bernardino, etc.).— Grinnell, Pasadena 

 Acad. Sci., Pub. ii, 1898, 39 (Los Angeles Co., foothills, resid.). 



Peucea ruficeps Cooper, Proc. Cal. Ac. Sci., 1870, 71 (Tulare Valley). 



[Pmciea'i ruficeps Coues, Key N. Am. Birds, 1872, 140. 



[Peuciea ruficeps] var. ruficeps Baird, Brewer, and Ridgway, Hist. N. Am. Birds, 

 ii, 1874, 38. 



P.[eucxa] ruficeps Coues, Key N. Am. Birds, 2d ed., 1884, 374, part.— Ridgway, 

 Man. N. Am. Birds, 1887, 429, part. 



AimopUla ruficeps Ridgway, Auk, xvi, Jan., 1899, 81.— American Ornitholo- 

 gists' ITkion Committee, Auk, xvi, 1899, 120. 



AIMOPHILA RUFICEPS SORORIA Ridgway. 

 LAGTINA SPARROW. 



Similar to A. r. rvficejyft in coloration of upper parts, but chestnut 

 of pileum somewhat lighter or clearer, supraloral line whiter, and 

 supra-auricular stripe lighter and grayer; smaller than ^4. /■. scottii, 

 with back, etc. , less ashy, with chestnut streaks darker and much nar- 

 rower, and the under parts much more strongly tinged with buff; 

 differing from all the other northern forms of the species in much 

 thicker and relatively shorter bill. Wing, 55.88-62.99 (60.20); tail, 

 60.96-65.53 (63.25); exposed culmen, 11.43; depth of bill at base, 

 6.35-6.86 (6.60); tarsus, 20.32-20.57 (20.32); middle toe, 13.9T-15.24 

 (14.73).' 



Southern portion of Lower California, in mountains (Laguna; Vic- 

 toria Mountains). 



Peucsea ruficeps boucardi (not Zonotrichica boucardi Sclater) Belding, Proc. U. S. 

 Nat. Mus., vi, 1883, 348 (Victoria Mts., Lower California, above 2,500 ft.). 



P.\eucsea] ruficeps boucardi Ridgway, Man. N. Am. Birds, 1887, part (Lower 

 California). 



Peucaea ruficeps (not Ammodromus ruficeps Cassin) American Ornithologists' 

 Union, Check List, 1886, no. 580, part ("Cape St. Lucas") . 



Aimophila ruficeps sororia Ridgway, Auk, xv, July, 1898 (pub. May 14, 1898), 226 

 (Victoria Mts., Lower California; U. S. Nat. Mus.). — Ajieric^n Ornitholo- 

 gists' Union Committee, Auk, xvi, 1899, 120. 



AIMOPHILA RUFICEPS SCOTTII (Sennett). 

 SCOTT'S SPARROW. 



Similar to A. r. sororia but larger, with more slender bill, the back 

 more broadly streaked with chestnut-brown, rump and edgings of 

 scapulars and interscapulars much grayer, and under parts less strongly 

 suffused with buff. 



AdMlt male.— liength (skins), 134.62-154.94 (143.51); wings, 63.50- 

 70.36 (66.04); tail, 66.04-74.17 (70.87); exposed culmen, 11.43-13.97 



^ Three specimens, only one of them with sex determined. 



