ORDER PASSERES. 347 
RanGe.— Western United States and Mexico. Breeds in Transition Zone 
from southern British Columbia, Montana, and southeastern Wyoming to 
Jalisco, Michoacan, Puebla, and Vera Cruz, Mexico, and from the Pacific coast 
to the Rocky Mountains (Colorado and eastern New Mexico); casual in South 
Dakota and Nebraska. 
b. Sitta pygmeea leuconticha ANTHONY. White-naped Nuthatch. [730a.] 
Sitta pygmea leuconucha ANTHONY, Proc. Cal. Acad. Sci., ser. 2, IT, 
Oct. 11, 1889, 77. (San Pedro Martir Mountains, Lower California.) 
Ranace.— Breeds in Transition Zone from San Diego County, California, 
south to San Pedro Martir Mountains, Lower California. 
Famity PARIDA. Tirmice. 
GENUS BHOLOPHUS Casanis. 
Beolophus CaBanis, Mus. Hein., I, 1851, 91. Type, by monotypy, Parus 
bicolor LiNNEUS. 
Bezoloéphus bicolor (Linnxus). Tufted Titmouse. [731.] 
Parus bicolor Linnzus, Syst. Nat., ed. 12, I, 1766, 340. (Carolina.) 
RanGeE.— Carolinian and Austroriparian zones of eastern United 
States from Nebraska, Iowa, Illinois, Indiana, Ohio, Pennsylvania, 
and New Jersey south to central Texas, the Gulf coast, and Florida; 
casual in southern parts of Wisconsin, Michigan, New York, and 
Connecticut. 
Beolophus atricristatus (CassIn). 
RANGE.— Central and southern Texas south in eastern Mexico to 
Vera Cruz. 
a  Beolophus atricristatus atricristatus (Cassin). Black-crested Titmouse. 
[732.] 
Parus atricristatus Cassin, Proc. Acad. Nat. Sei. Phila., V, 1850, 103, 
pl. 2. (Rio Grande, Texas.) 
Rancr.— Lower Sonoran and Arid Tropical zones from the Rio Grande 
Valley south through eastern Mexico to Coahuila, San Luis Potosi, and 
northern Vera Cruz. 
