202 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



fig. 1.— CouES, Check List, 2(1 ed., 18S2, 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. 

 IPasserculusI (juttatm Coues, Key N. Am. Birds, 1872, 136. 

 P. [asserculm'] (jnttntiis Coues, Key N. Am. Birds, 2d ed., 1884, 364. 

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

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

 Passercuhis 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. 

 Ammoclramus rostratus guttatas Ridgway, Proc. IT. S. Nat. Mus., viii, sig. 23, Sept. 2, 



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

 A. {rnmodramus'\ rostratus guttatus Ridgway, Man. X. Am. Birds, 1887, 410. 

 Passerculus rostratus (not Ember iza rostrata Cassin) Sharpe, Cat. Birds Brit. 



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



PASSERCULUS ROSTRATUS HALOPHILUS (McGregor). 

 ABREOJOS SPARROW. 



Similar to 1\ r. guttatus^ bat larg'er and much darker, the upper 

 parts deep olivaceous streaked with blackish on pileum and l)ack, the 

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

 from P. heldingl 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.—Lmgth. (skins), IIJ:. 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, 15.19-17.02 (16.00).^ 



Adult femcde.—'LQngih (skins), 111.30-123.19 (119.13); wing, 63.50- 

 69.60 (61.77); tail, 15.21-51.05 (17.50); exposed culmen, 12.19-13.21 

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

 (21.31); middle toe, 11.18-16.76 (15.75).' 



Abreojos Point, Lower California (breeding), 



Ammoclramus h(tlophilus McGregor, Auk, xv, July, 1898, 265 (.salt marshes near 

 Abreojo-s Point, Lower California; coll. R. C. McGregor). 



Genus CKNTRONYX Baird. 



Centronyx Baird, Rep. Pacific R. R. Surv., ix, 1858, 440. (Type, Emheriza bairdli 

 Audubon.) 



Small conspicuousl}' streaked terrestrial Fringillidtc with the sixth 

 primary not abruptly 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. 



