31533) ADDITIONS AND CORRECTIONS. 
P. 130. Gray-crowned Finch. It is hardly necessary to recognize by name more than one 
variety of this bird—‘‘campestris” being referred to tephrocotis proper, and ‘‘littoralis” to 
var. griseinucha. 9 
P. 135. Baird’s Bunting. As very strongly hinted in the text, the supposed specimens of 
Centronyx bairdii from Massachusetts are not this species at all, but a Passerculus, apparently 
new. (P. princeps Maynarp, Am. Nat. vi, 1872, p. 637). Although perfectly aware of this at 
time of writing, I refrained from anticipating publication of the fact. I venture to foretell, 
that a second specimen of ‘‘ Centronyx” will never be found. 
P. 136. St. Lucas Sparrow. Doubtless only a variety of P. rostratus. 
P. 140. Good authority contends for the specific validity of Peucea cassinii, but I am not 
prepared to yield my position. 
P. 147. It may be as well to allow Passerella townsendii to stand as a species, until its 
intergradation with tliaca is proven. P. schistacea goes with townsendii as a slight variety. 
P. 174, first line. For features read feathers. 
P. 183. Vauex’s Swift. Iam more inclined to doubt its validity. 
P. 186. Linné Hummingbird. The implication is, that the specimen accredited to Massa- 
chusetts came from a dealer’s stock, in exchange for a specimen of 7. colubris spoilt in stuffing. 
P. 207. Ferrugineous Owl. To the extralimital specimens described, add :—No. 61585, 
Mus. Smiths. Inst., from Tucson, Arizona, since transmitted to me by Lt. C. Bendire, U.S. A. 
It is the specimen of which some fragments furnished my note in the American Naturalist, as 
quoted in the text. 
P. 213. Gyrfaleon. The specimens from the Mackenzie's river region, noticed by Baird 
(i. c.) under name of F. sacer, have since been determined by Prof. Newton to be indistin- 
guishable from ordinary var. islandicus. I omitted to state, that var. gyrfalco is a N. European 
form, not recognized, I believe, from this country. The name sacer has priority over all the 
others as the specific designation. 
P. 222. Cathartes burrovianus, there is, reason to believe, may be a valid species; it does 
not, however, occur within our limits. 
P. 248. After Genus PHALAROPUS insert Brisson. 
P. 270. Before Gruiwx insert: — SuBorDER ALECTORIDES. Cranes, Rams anp 
OTHER ALLIES. SEE p. 241. 
