2 
Coues on Passerculus bairdi. 
There is no occasion here to enter into its history, as all that is 
known is already published in the works below cited, — the more 
complete notices being those in the “ Birds of the Northwest” and 
the “ History of North American Birds,” especially in the Appendix 
of Vol. III. of the latter. 
At one time it was thought that Baird’s Bunting had been found 
in Massachusetts. The error was not rectified until several notices 
to such effect, including Mr. Maynard’s full account, and his plate 
of the supposed Massachusetts “ Centronyx ,” had appeared. Mr. 
Maynard made the correction in 1872, when the New England bird 
was named Passerculus princeps. 
The complete synonymy of the two species, and their nearly en- 
tire bibliography, are as follows : — 
Passerculus bairdi. 
Emberiza bairdii, Aud., B. Amer. 8vo. ed. vii, 1843, 359, pi. 500 (orig. 
description. Fort Union, Dak.). — Baird, Stansbury’s Bep. Great Salt 
Lake, 1852, 330 (mere quotation). 
Coturniculus bairdi , Bp., Consp. Av. i., 1850, 481 (mere quotation). 
Centronyx bairdii , Bd., B. N. A. 1858, 441 (type of the genus. Species 
redescribed from the type specimen). (Not of any authors referring to 
the supposed appearance of the bird in New England.) — Codes, Key, 
1872, 135 (compiled description). — Aiken, Am. Nat. vii, 1873, 236 
(comparison with the new C. ochrocephalus from Colorado). — Ridgw., 
Bull. Essex Inst, v, 1873, 182 and 190 (Colorado ; critical reference to 
Aiken’s specimens, which had been named C. ochrocephalus). — Coues, 
Am. Nat. vii, 1873, 695 (rediscovery in abundance in Dakota ; history 
and criticism). — Henshaw, Am. Nat. viii, 1874, 241 (Arizona). — Allen, 
Pr. Bost. Soc. xvii, 1874, 57 (Dakota ; nest and eggs). — Coues, B. N. W. 
1874, 125 (synonymy, redescription, general history and habits). — Hen- 
shaw, Rep. Ornith. Specs. 1874, 110 (New Mexico and Arizona, abun- 
dant). — Henshaw, Rep. Expl. W. 100 merid. Vol. v, Zoology, “ 1875” = 
1876, 253 (same). — Bd., Brew., and Ridgw., Hist. N. A. B. i, 1874, 
531, figs. pi. 25, f. 3 ; iii, 1874, 510 (general account, wood-cuts, and 
colored plate of head). — Henshaw, List B. Arizona, 1875, 158. 
Emberiza ( Centronyx ) bairdii , Gray, Hand-list, ii, 1870, 116, No. 7733. 
Ammodrom-us bairdi , Giebel, Nomencl. Av. i, 187-, 328. 
Passerculus bairdii, Codes, Am. Nat. vii, 1873, 697. 
Passerculus bairdi, McCauley, Bull. U. S. Geol. Surv. iii, No. 3, 1877, 
663 (Cahoncito Texas ; nesting). 
Centronyx ochrocephalus, “Aiken” [Ridgway], Am. Nat. vii, 1873, 237 
(El Paso, Colorado, autumnal specimens described as new species. — See 
Scott, ibid. 564; Coues, ibid. 696 ; Ridgw. Bull. Essex Inst, v, 1873, 
190 ). 
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