176 REVIEW OF AMERICAN BIRDS. [PART I. 
Med. for 1853, 1854, 82 (Greenland).—Brewer, Pf. Bost. Soc. N. H. 
VI, 1856, 4 (mest and eggs).—Helinaia rub. Aup. B. A. II, pl. 
113.—Helmitherus rub. Bon.—Scu. P. Z. 8. 1856, 291 (Cordova) 3 
1859, 363 (Xalapa).—Helminthophaga rub. Cas.—ScuaTer, P. Z. 8. 
1858, 298 (Oaxaca; Feb. and Aug.).—WMniotilta rub. REINwARDT, 
Ibis, 1861, 6 (Greenland). 
Sylvia leucogastra, Suaw, Gen. Zool. X, 1, 1817, 622. 
“Sylvia nashvillei,” ViEiLor.—Gray.—Sylvia mexicana, HoLBoLt. 
Hab. Eastern province of N. America, north to line of British America; 
Greenland ; south to Mexico; not in West Indies. Recorded from Xalapa, 
Cordova, Orizaba, and Oaxaca, Mex. 
Smith- Icottee-| Sex 
sonian| tor’s | and Locality. CG es Received from Collected by 
No. No. | Age. Mii 
26,930 se es Nova Scotia. ne W. G. Winton. W.G. Winton. 
2,150 abe of Carlisle, Pa. April 26,’45.| S. F. Baird. S. F. Baird. 
2,237 ae May 6, 1845.! ee ff 
20,261 22 g Lake of the Woods.| May 30, ’60.| R. Kennicott. R. Kennicott. 
20,293 Sy (i OG Ft. Stockton, Tex. | May 6, 1860.| P. Duffy. LP. Duffy. 
32,707 |29,935 | 2 Mexico. Soe Verreanxs.oish4 lee baie 
32,703 |29,934 | of ad ae I tee) TON er ere 
29,205 a 32 Orizaba, Mex. Hee Prof. Sumichrast..|) 4 sessne 
Helminthophaga celata. 
Sylvia celata, Say, Long’s Exp. R. Mts. I, 1823, 169.—Bon. Am. Orn. I, 
pl. v, fig. 2—Avp. Orn. Biog. II, pl. 178.—Sylvicola cel. Rica.— 
Vermivora cel. Janv.—Helinaia cel. Aup. B. A. II, pl. 112.—Helmi- 
therus cel. Bon.—Scuater, P. Z. 8. 1857, 212 (Orizaba).—Helmin- 
thophaga cel. Batrp, Birds N. Am. 1858, 257.—Scuarer, P. Z. 8. 
1858, 298 (Oaxaca ; December) ; 1859, 373; 1862, 19 (La Parada). 
—Coorer & Sucxtry, P. R. R. XII, 1, 1859, 178.—Lorp, Pr. R. Art. 
Inst. Woolwich, IV, 1864, 115 (N. W. Boundary). 
Hab. Middle and western provinces of N. America: Youkon and McKenzie 
River dist. Very rare in the eastern Province of U. 8.; Cape St. Lucas; 
western Mexico in winter. 
On comparing extensive series of specimens from the Pacific coast 
(including Cape St. Lucas), and those from the interior of North 
America, including Arizona, Utah, Rocky Mountains, Tamaulipas, 
and the Hudson Bay territories, I find that the former are of a much 
brighter and clearer yellowish beneath and olivaceous above than 
the latter. In all these there is much gray mixed with the yellow- 
ish tints, clouding and obscuring them—sometimes very considerably. 
The concealed orange-brown patch of the crown is also more re- 
stricted in extent. These differences correspond with those of ma- 
turity of plumage, but even winter and young specimens from the 
Pacific coast are more brightly colored than the others in spring. 
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