BREWSTER: BIRDS OF THE CAPE REGION, LOWER CALIFORNIA. 211 



with rusty ochraceous, the buffy of the jugulum exceptionally rich, and the 

 rufous tinge ou the ilanks, wings, tail, and upper parts generally, deeper and 

 more pronounced than in any of the specimens in my collection from British 

 Columbia or Washington. If Mr. Frazar's birtls were, as both he and I believe, 

 breeding or about to breed in the region where they were obtained, they furnish 

 an interesting case of interrupted distribution, for true ustulata is not known to 

 occur in summer in the southern or central portions of California, where it is 

 replaced by the slightly paler, grayer form H. u. oedica. 



The Russet-backed Thrushes found by Mr. Frazar on the Sierra de la 

 Laguna in May were all met with in rather open oak and pine woods near 

 water, where they were apparently settled and preparing to breed. None were 

 seen elsewhere save at Triunfo, where a single female was shot on June 13 in 

 a shaded arroyo. This bird was unmistakably incubating, and must have had 

 a nest and eggs somewhere in the neighborhood. These are the only known 

 instances of the occurrence of the Russet-baqked Thrush in the southern part 

 of Lower California, but near the northern boundary it was " seen at Hansen's 

 as late as May 14, 1884, bj" Mr. Belding, and after the middle of May southeast 

 of San Rafael." ^ Mr. Anthony found it as late as May 25 on San Pedro 

 Martir, where, he thinks, "it is possibly a resident of the pines, but those 

 taken showed little enlargement of the ovaries, and it is more probable that 

 they were belated migrants." ^ 



Hylocichla guttata (Pall.). 

 Alaska Hermit Thrush. 



(?) Hylocichla unalascae Ridgwat, Proc. U. S. Nat. Mus., V. 1883, 633, footnote, 



part (Cape St. Lucas). 

 Hylocichla unalascae Belding, Ibid., VI. 1883, 346, part (Casa Pintada, Victoria 



Mts., Feb. 17, 1883). 

 Turdus aonalaschkae Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 319, part 



(Victoria Mts.). 



Soon after concluding a study of the smaller western forms of the Hermit 

 Thrash, some of the results of which are given in this paper under Hylocichla 

 guttata nana, I asked Mr. Oberholser, who had seen my specimens and was 

 aware of the changes which I had decided to make in the names of two of the 

 forms, to carefully examine all the skins in the National Museum from the 

 Cape Region, and let me know his opinion regarding them. In reply to this 

 request, he wrote me, under date of April 30, 1902, as follows : " I have been 

 unable to find any of Xantus's specimens, . . . but discovered three collected 

 by Belding, as follows : — 



"One from Casa Pintada, Lower California, February 17, 1883, is unques- 

 tionably guttata. 



1 Bryant, Proc Calif. Acad. Sci., 2d ser., IL 1889, 319. 



2 Zoe, IV. 1893, 246. 



