116 University of California Pu'blications in Zoology [Vol. 21 



rather than any other subspecies, but differs from the mode of that race in 

 certain details of markings and color. Dorsally this bird has hardly a trace of 

 streaking, the back being almost uniformly reddish, with a suggestion of under- 

 lying gray about the head and neck. The ventral streakings, though of a brighter, 

 more ' ' foxy ' ' red than in the Unalaschcensis group, are not so red as in typical 

 iliaca. Wing bars are but faintly indicated. 



No. 4630, collection of J. and J. W. Mailliard; male; San Geronimo, Marin 

 County; January 26, 1901. (See Mailliard, 1901, p. 72.) Close to typical iliaca, 

 differing from eastern birds mainly in less contrasted streaking above, and in more 

 blackish markings below. Bill as in typical ilinoa, and wing bars conspicuous. 



No. 4208, collection of J. and J. W. Mailliard; female; Plumas County, "alt. 

 4000"; September 27, 1898. Differing from eastern birds only in being less 

 streaked dorsally. The general appearance of the back is reddish brown, mottled 

 rathern than longitudinally streaked. Wing bars conspicuous. 



No. 750, collection of A. B. Howell; female; Santa Barbara; January 1, 1911; 

 collected by J. H. Bowles. (See Bowles, 1911, p. 175.) Ventrally indistinguishable 

 from selected eastern specimens. Back and top of head almost uniformly dull 

 grayish brown, back obscurely mottled with somewhat darker brown. Eeddish 

 coloration on rump and upper surface of tail feathers rather paler than in typical 

 iliaca. Wing bars fairly well defined. 



No. 2003, collection of W. Otto Emerson; male; Hayward, Alameda County; 

 December 12, 1898 ; collected by W. Otto Emerson. Differs from average eastern 

 examples of iliaca in the darker, less reddish, coloration of the spots below, and 

 in the almost uniformly brown back. The dorsal region is dull brown, faintly 

 mottled with darker brown, and on the head and neck there is a dull brown wash 

 over an underlying grayish color. Wing bars faintly indicated. 



No. 1811, collection of W. M. Pierce; male; Palmer's Canon, Los Angeles 

 County; February 2, 1919; collected by W. M. Pierce. Differs from eastern birds 

 in its generally darker coloration and heavier ventral markings. Upper parts 

 dark grayish brown, washed Avith reddish; back obscurely streaked with dark 

 reddish. Breast streakings of a brighter reddish color than the back. Wing 

 bars faintly indicated. This bird is fairly intermediate between typical iliaca 

 and unalaschcensis. 



No. 1810, collection of W. M. Pierce; male; Palmer's Caiion, Los Angeles 

 County; February 1, 1919; collected by W. M. Pierce. To all appearances this 

 specimen lies between typical ilinca and altivagans. It is larger than average 

 examples of the latter, darker colored and more heavily marked below. Upper 

 parts nearly uniform grayish brovni, more grayish on the head, more brownish on 

 dorsum. No dorsal streakings and no wing bars. In color and markings this 

 bird is close to altivagans, in dimensions it is nearer iliaca. 



No. 2805, collection of F. S. Daggett; male; Nicasio, Marin County; Febru- 

 ary 6, 1906; collected by C. A. Allen. Spotting beneath of a darker brown than 

 in any eastern specimen ; top of head and back almost uniform dull brown ; dorsal 

 region faintly spotted. Wing bars faintly indicated. This bird is about inter- 

 mediate in color and markings between typical iliaca and insularis. The bill is 

 as in iliaca, and on the whole the specimen seems best referred to that subspecies. 



No. 1180, collection of L. E. Wyman; female; Santa Monica Mountains, Los 

 Angeles County; January 31, 1917. Collected by L. E. Wyman. This bird can 

 be considered an example of iliaca only by reason of the manner in Avhich the 

 series of variants just detailed connects this extreme with the mode of the 

 subspecies. It is in a slight degree further from the type than the specimen last 

 described. Under parts are rather heavily streaked, and with a dark shade of 



