ORDER PASSERES. 225 
[B 334, part, C 1592, part, R 194, part, C 228, part.| 
Groce. Dist.— Salt marshes about San Francisco Bay, and south 
along the coast in winter to southern California. 
543. Ammodramus beldingi Rincw. 
Belding’s Marsh Sparrow. 
Passerculus beldingi Ripcw. Pr. U. S. Nat. Mus. VII. Jan. 19, 
1885, 516. 
Ammodramus beldingt Ripew. Pr. U. S. Nat. Mus. VIII. 188s, 
354: 
[B 334, part, C 159a, part, R 194, part, C 228, part. | 
Geoc. Dist.— Salt marshes of the Pacific coast, from Santa Bar- 
bara south to Todos Santos Island, Lower California. 
544. Ammodramus rostratus Cass. 
Large-billed Sparrow. 
E'mberiza rostrata Cass. Pr. Ac. Nat. Sci. Phila. 1852, 348. 
Ammodramus rostratus Cass. Illustr. B. Cal. Tex. etc. 1855, 226, 
pl. 38. 
[B 336, C 160, R 196, C 230.] 
Groc. Dist.— Coast of southern California, south in winter to 
Cape St. Lucas and northwestern Mexico. 
544 a, AMmodramus rostratus guttatus (Lawr.). 
St. Lucas Sparrow. 
Passerculus guttatus Lawr. Ann. Lyc. N. Y. VIII. 1867, 473. 
Ammodramus rostratus guttatus Ripcw. Pr. U.S. Nat. Mus. VIII. 
1885, 355. 
[B—5 C 160¢) Ri195, 'C 231.] 
Geoc. Dist.— Southern Lower California. 
SuBGENUS CENTRONYX Bairp. 
Centronyx Batrp, B. N. Am. 1858, 440. Type, Emberiza 
bairdi AuD. 
15 
