348 CHECK-LIST OF NORTH AMERICAN BIRDS. 
b. Beolophus atricristatus sénnetti Ripcway. Sennett’s Titmouse. [732a.] 
Beolophus atricristatus sennetti Ripaway, Bull. U. 8. Nat. Mus., No. 50, 
Pt. 3, 1904, 386. (Leon Springs, Bexar Co., Texas.) 
RaNGE.— Lower Sonoran Zone of central Texas, from Tom Green and 
Concho counties east to the Brazos River, and from Young County south to 
Nueces and Bee counties. 
Beolophus inornétus (GAMBEL). 
RanceE.— Arid districts of western United States south to Lower 
California and the northern border of Mexico. 
a. Beolophus inornatus inornatus (GAMBEL). Plain Titmouse. [733.] 
Parus inornatus GAMBEL, Proc. Acad. Nat. Sci. Phila., II, 1845, 265. 
(“Upper California.” “First discovered near Monterey.’’) 
Rance.— California west of the Sierra Nevada. Breeds in Upper Sonoran 
Zone from Mendocino and Siskiyou counties to northern Lower California. 
b. Besolophus inornatus griseus (Ripaway). Gray Titmouse. [733a.] 
Lophophanes inornatus griseus Ripaway, Proc. U. S. Nat. Mus., V, 1882, 
344. (Iron City, Iron Co., Utah.) 
RanGe.— Mountains of the arid interior of western United States. Breeds 
in Upper Sonoran Zone from Nevada, Utah, and central Colorado to south- 
eastern California, southern Arizona, southeastern New Mexico, and western 
Texas. 
c. Beolophus inornatus cinerdceus (Ripaway). Ashy Titmouse. [733b.] 
Lophophanes inornatus cineraceus Ripaway, Proc. U. S. Nat. Mus., VI, 
1883, 154. (Laguna, Lower California.) 
Rance.— Breeds in Upper Sonoran Zone of the Cape Region of Lower 
California. 
Beolophus wollweberi (BoNAPARTE). Bridled Titmouse. [734.] 
Lophophanes wellwebert BONAPARTE, Comptes Rendus, XX XI, 1850, 478. 
(Zacatecas, Mexico.) 
Rance.— Breeds mainly in Upper Sonoran Zone of mountains of 
southern Arizona and southern New Mexico and south through 
Mexico to Guerrero, Oaxaca, and Vera Cruz. 
