202 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



fig. 1.— CouEs, Check List, 2d ed., 1882, no. 231.— Ridgway, Proc. U. S. Nat. 



Mus., iii, 1880, 2 (crit.); v, 1883, 538, 539, in text (crit.); Norn. N. Am. 



Birds, 1881, no. 195. 

 [Passerculus'] guttatus Coues, Key X. Am. Birds, 1872, 136. 

 P. \_asserculus] guttatus Coues, Key N. Am. Birds, 2d ed., 1884, 364. 

 \_Zonotrichia\ guttata Gray, Hand-list, ii, 1870, 95, no. 4713. 

 Passerculus rostratus . . . var. guttatus Coues, Check List, 1873, no. 160a. 

 Passerculus rostratus, var. guttatus Baird, Brewer, and Ridgway, Hist. N. Am. 



Birds, i, 1874, 544, pi. 25, fig. 1. 

 Passerculus rostratus guttatus Goode, Bull. U.S. Nat. Mus. , no. 20, 1883, 333. 

 ' Ammodramus rostratus guttalas Ridgway, Proc. U. S. Nat. Mus., viii, sig. 23, Sept. 2, 



1885, 355. — American Orxitholgists' Union, Check List, 1886, no. 544a. 

 A. [mmodramus} rostratus guttatus Eidgway', Man. N. Am. Birds, 1887, 410. 

 Passerculus rostratus (not Emberiza rostrata Caasin) Sharpe, Cat. Birds Brit. 



Mus., xii, 1888, 680, part (in synonymy). 



PASSERCULUS ROSTRATUS HALOPHILUS (McGregor). 

 ABREOJOS SPARROW. 



Similar to P. r. guttatus, but larger and much darker, the upper 

 parts deep olivaceous streaked with blackish on pileum and back, the 

 streaks on chest, etc., black, with little if any brown edging; diflfering 

 from P. hddingi in much more uniform coloration of upper parts, 

 with the ground color more decidedly olivaceous and the darker streaks 

 far less distinct; in less numerous and decidedly narrower blackish 

 streaks on chest, etc., and in longer wing, tail, and tarsus. 



Adult male.— Jjength (skins), 114.30-127.00 (123.19); wing, 66.80- 

 70.61 (69.09); tail, 42.93-52.32 (50.29); exposed culmen, 12.70-12.95 

 (12.62); depth of bill at base, 6.35-7.62 (6.60); tarsus, 20.32-22.61 

 (21.59); middle toe, 15.49-17.02 (16.00).^ 



Adult female.— Length (skins), 114.30-123.19 (119.13); wing, 63.50- 

 69.60 (64.77); tail, 45.21-51.05 (47.50); exposed culmen, 12.19-13.21 

 (12.70); depth of bill at base, 6.10-6.86 (6.35); tarsus, 20.32-22.35 

 (21.34); middle toe, 14.48-16.76 (15.75).' 



Abreojos Point, Lower California (breeding). 



Ammodramus halopJnlus McGregor, Auk, xv, July, 1898, 265 (salt marshes near 

 Abreojos Point, Lower California; coll. R. C. JlcGregor). 



Genus CKNTRONYX Baird. 



C'entrony.v Baird, Rep. Pacific R. R. Surv., ix, 1858, 440. (Type, Emberiza bairdii 

 Audubon.) 



SmaU conspicuously streaked terrestrial Fringillidte with the sixth 

 primary not abrupth' shorter than the seventh; the hallux longer 

 than the outer toe, its claw longer than distance from nostril to tip of 

 maxilla; edge of wing white; adults with a black rictal streak and with 

 the chest streaked with black. 



'Nine specimens. ^Twelve specimens. 



