256 CHECK-LIST OF NORTH AMERICAN BIRDS. 
c. Passerculus rostratus sanctorum Ripaway. San Benito Sparrow. [544c.] 
Passerculus sanctorum Ripaway, Proce. U. 8. Nat. Mus., V, 1883, 538. 
(San Benito Island, Lower California.) 
RanGgE.— San Benito Island, Lower California; south in winter to the Cape 
Region. 
Y GENus AMMODRAMUS Swarnson. 
Ammodramus Swainson, Philos. Mag., N.S., I, June, 1827, 435. Type, 
by monotypy, Ammodramus bimaculatus SwAtNson. 
Suscenus CENTRONYX Bairp. 
Centronyx Batrp, Rep. Expl. & Surv. R. R. Pac., IX, 1858, 440. Type, 
by monotypy, Emberiza bairdit AupDUBON. 
Ammé6dramus bairdi (AUDUBON). Baird’s Sparrow. ([545.] 
Emberiza bairdii AupUBON, Birds Amer., VII, 1844, 359, pl. 500. (East- 
ern Montana, near Old Fort Union, North Dakota.) 
RaNnGE.— Great Plains region. Breeds mainly in Transition 
Zone from southwestern Saskatchewan and southwestern Keewatin 
to central Montana, central North Dakota, and northwestern Minne- 
sota; migrates through Arizona and New Mexico and winters from 
central Texas to Chihuahua and northern Sonora; accidental on Long 
Island, N. Y. 
Suspcenus AMMODRAMUS Swarnson. 
Ammodramus savannarum (GMELIN). 
RaNGE.— United States south to the West Indies, Central America, 
and northern South America. 
a. [Ammodramus savannarum savannarum. Extralimital.] 
b. Ammodramus savannarum austrélis Maynarp. Grasshopper Sparrow. 
[546.] 
Ammodromus australis MAYNARD, Amer. Exch. and Mart, III, 1887, 33. 
(Nassau, New Providence, Bahamas.) 
