46 



BULLETIN 50^ UNITED STATES NATIONAL MUSEUM. 



Turdus aonalaschJcse avduboni (not Tvrdus auduhoni Baird) Belding, Bull. Cooper 

 Orn. Club, i, 1899, 21 (nesting in Sierra Nevada; descr. nest, etc.). — Beck, 

 Condor, ii, 1900, 19 (near summit of Sierra Nevada, breeding; descr. nest). 



Turdvs nanus (not of Audubon) Baird, Rep. U. S. and Mex. Bound. Surv., ii, 

 pt. ii, 1859, 9 (Frontera, Texas, May 8). 



H[ylocichIa] g[uttata] nana (not Turdus nanus Audubon) Bailey i; Florence M.), 

 Handb. Birds W. U. S., 1902, 472, part (Sierra Nevada, breeding). 



HYLOCICHLA GUTTATA AUDUBONI (Baird). 

 ROCKY MOUNTAIN HERMIT THRUSH. 



Similar in coloration to H. g. sequoiensis, but decidedly larger." 



Adult male.— Length (skins), 162-183 (170); wing, 97-106 (102.4); 

 tail, 71.5-79 (75); exposed culmen, 14-16 (15.1); tarsus, 28.5-31 

 (30.1); middle toe, 16-19 (17.5) .« 



Adult female. —Length (skins), 153-178 (165); wing, 9 6-106 (99.4); 

 tail, 70-79.5 (73.2); exposed culmen, 13.5-15 (14.4); tarsus, 28-31 

 (29.5); middle toe,. 16-18 (17.2).'' 



Breeding in Rocky Mountain district of United States and British 

 Columbia, from New Mexico (upper Pecos River; Cloudcroft), Ari- 

 zona (Chiricahua Mountains; San Francisco Mountains; Mogollon 

 Mountains) and Lower California (Sierra de la Laguna) northward to 

 eastern British Columbia (Nelson; Lake la Hache ?), and from main 

 Rocky Mountain ranges in New Mexico, Colorado, Wyoming, and 

 Montana westward to the Toyabe Mountains, Nevada; during migra- 

 tion southward over Mexican plateau to highlands of Guatemala 

 (Coban; Volcan de Fuego, 10,000 to 12,000 feet; Hacienda Chancol), 

 and to western and central Texas (Kendall, San Angelo, Tom Green, 

 Cook, and Bexar counties). 



a Twenty specimens. 

 b Seventeen specimens. 



Specimens from different geograjjliic areas compare as follows in average measure-- 

 ments: 



Locality. 



Ten breeding males from Rocky Mountains of United States. 

 Two breeding males from Lower California (Sierra de la 1-a- 



guna) 



Six males (migrants) from Mexico 



Two males (migrants) from Guatemala (Hacienda Chancel). 



Eight females (mostly breeding) from Rocky Mountains 



One breeding female from eastern British Columbia (Nelson). 

 Two breeding females from Lower Califorma (Sierra de la 



Laguna 



Seven females (migrants) from Mexico 



Ex- 

 posed jTarsus. 

 culmen. 



