ORDER PYGOPODES. ya 
Rance.— Western North America. Breeds from central British Columbia, 
Great Slave Lake, and Manitoba south to southern California, northern 
Arizona, northern Nebraska, and northern Iowa; winters from central Cali- 
fornia to Cape San Lucas and Guatemala; east to Kansas in migration; 
casual in Missouri, Indiana, and Ontario. 
Suscenus TACHYBAPTUS ReicHEeNnBACcH. 
Tachybaptus RricHENBACH, Avium Syst. Nat., 1849, pl. ii. Type, 
by orig. desig., Colymbus minor RetcHENBACH = C.ruficollis PAuuas. 
Colymbus dominicus LINN «vs. 
RaNnGE.— Subtropical and tropical America. 
a. [Colymbus dominicus dominicus. Extralimital.] 
b. Colymbus dominicus brachypterus CoapmMan. MexicanGrebe. [5.] 
Colymbus dominicus brachypterus CHAPMAN, Bull. Amer. Mus. N. H., XII, 
1899, 256. (Lomita Ranch, Lower Rio Grande, Texas.) 
RaNnGE.— Southern Lower California and southern Texas south to Panama. 
GENUS PODILYMBUS Lesson. 
Podilymbus Lesson, Traité d’Orn., 1831, 595. Type, by monotypy, 
Podiceps carolinensis LatHAM = Colymbus podiceps LINN&Us. 
Podilymbus pédiceps (LINNa&us). Pied-billed Grebe. [6.] 
Colymbus podiceps LINN&wS, Syst. Nat., ed. 10, I, 1758, 136. (Carolina.) 
RanGe.— North and South America. Breeds from British Colum- 
bia, southern Mackenzie, southern Keewatin, Quebec, and New 
Brunswick south to Chile and Argentina, but often rare or local; 
winters from Washington, Texas, Mississippi, and Potomac Valley 
southward. 
