742 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



from cere 12-12.5 (12.1); tarsus 35-40 (3G.3); middle toe without 

 claw 21-24 (22.5 mm.). ^« 



Adult female. —Wing 170-181 (175.1); tail 118-132 (122.4); culmen 

 from cere 12-13 (12.3); tarsus 36-40 (39.1); middle toe without 

 claw 21.5-24 (22.4 mm.)." 



Range. — Resident in southern Baja California from Santana 

 southward to the Cape (San Jose del Cabo, Cape San Lucas, Carmen 

 Island, Triunfo, Santiago, San Jose del Rancho, Miraflores, Ceralvo ; 

 Esplritu Santo Islands, San Ignacio) ; also recorded from 20 miles 

 south and southwest of Pilot Knob (on the Colorado and Alamo 

 Rivers), from 5 miles east of Cerro Prieto, and from the hot lowlands 

 of Sonora and Sinaloa (breeding south to Rio Fuerte, wintering to 

 Mazatlan). 



Type locality. — San Jose del Cabo, Baja California. 



Tinnunculus sparverius (not Falco sparverius Linnaeus) Baird, Cat. North Amer. 

 Birds, 1859, No. 13, part; Proc. Acad. Nat. Sci. Philadelphia, xi, 1859, 302 

 (Cape San Lucas). — Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 193, part; 

 Norn. North Amer. Birds, 1881, No. 420, part.— Belding, Proc. U. S. Nat. 

 Mus., V, 1883, 543 (Cape San Lucas); vi, 1883, 350 (Laguna Mountains, s. 

 Lower California). 



Falco sparverius CotJEs, Key North Amer. Birds, 1872, 215, part; Check-list North 

 Amer. Birds, 1873, No. 346, part; ed. 2, 1882, No. 508, part.— American 

 Ornithologists' Union, Check-hst, 1886, No. 360, part; Man. North Amer. 

 Birds, 1887, 252, part.— Bryant, Proc. California Acad. Sci., ser. 2, ii, 1889, 

 281, 282, part (Cape San Lucas district). 



Falco {Tinmmculus) sparverius var. sparverius Ridgway, in Baird, Brewer, and 

 Ridgway, Hist. North Amer. Birds, iii, 1874, 169, part (Cape San Lucas). 



Falco sparverius a. sparverius Coues, Birds Northwest, 1874, 349, part. 



Falco sparverius peninsularis Mearns, Auk, ix, 1892, 257 (geogr. range), 267 (San 

 Jos6, Lower California; coll. U. S. Nat. Mus.). — American Ornithologists' 

 Union, Auk, x, 1893, 60 (Check-list, No. 360 b); Check-list, ed. 2, 1895, No. 

 360 b; ed. 3, 1910, p. 167; ed. 4, 1931, 77.— Brewster, Bull. Mus. Comp. 

 Zool., xli, 1902, 90 (San Jos6 del Cabo, San Jos6 del Rancho, Triunfo, and 

 Santiago; s. Lower California; April 20, July 8, Oct., Nov., Dec; Carmen 

 Island, March 2).— Townsend, Bull. Amer. Mus. Nat. Hist., xlviii, 1923, 14 

 (Cape San Lucas, March 24; Miraflores, May 2 and IS). — Grinnell, Univ. 

 California Publ. Zool., xxxii. No. 1, 1928, 112 (distr. in Lower California). — 

 Bancroft, Condor, xxxii, 1930, 27 (breeding, Santa Rosalia to Jos6 Marcia 

 Cafion, Lower California). — Peters, Check-list Birds of World, i, 1931, 303. — 

 Rowley, Condor, xxxvii, 1935, 164, in text (Lower California; 5 nest rec- 

 ords).— Bent, U. S. Nat. Mus. Bull. 170, 1938, 124 (habits).— Hargrave, 

 Condor, xU, 1939, 207, in text (size of bones). — van Rossem, Occ. Pap. Mus. 

 Zool. Louisiana State Univ., No. 21, 1945, 65 (Sonora; common res.). — Moore 

 and Bond, Condor, xlviii, 1946, 242, in text (Mexico; breeding range). 



Falco sparverius penninsularis Bond, Condor, xlv, 1943, 176 (descr.; distr.; tax.). 



Tinnunculus peninsularis Gurney, Cat. Birds Prey, 1894, 28, 



Cerchneis peninsularis Sharpe, Hand-list, i, 1899, 278. 



^' Sixteen specimens, including the type, from Lower Cahfornia. 

 '' Twelve specimens from Lower California. 



