62 REVIEW OF AMERICAN BIRDS. [ PART I. 
SIALIA, Swarnson. 
oa’ Swainson, Zool. Jour. III, Sept. 1827,173. (Type Motacilla sialis, Linn.) 
Sialia sialis. 
Motacilla sialis, Linn. 8S. N. 1758, 187 (based on Caressy, I, pl. 47).— 
Sialia sialis, Bairp, Birds N. Am. 1858, 222.—-Boarpmay, Pr. Bost. 
Soc. 1862, 124 (Calais, Me. ; very rare). 
Sialia wilsonii, Swanson, Zool. Jour. III, 1827, 173.—Cas. Jour. 1858, 
120.—Gunpuacu, Cab. Jour. 1861, 324.—Jonrs, Nat. Bermuda, 
1859, 28, 66 (resident in Bermuda). 
Sylvia sialis, Lata. ; Ampelis stalis, Nurt.; Erythraca wilsonii, Sw. 
Figures: VrieiLLor, Ois. Am. Sept. II, pl. ci, cii, ciii—Wus. I, pl. iii. 
—Auvp. Orn. Biog. II, pl. exiii.—Is. B. A. I, pl. 134.—Doueury, 
Cab. I, pl. xii. 
Hab. Eastern United States ; resident in Bermuda; Cuba (rare), Gundlach. 
As far as the indications of the large number of specimens in the 
Smithsonian Museum extend, this species is confined to the eastern 
faunal region of the United States and the Provinces, not extending 
up the western tributaries of the Missouri into the region of the sterile 
plains, nor northward beyond Lake Winnipeg. It is a rare bird in 
the West Indies—Gundlach recording it as scarce in Cuba. It is 
residen Bermuda, whence the eggs have been received by the 
Institution. 
From the fact of the rarity of this species as a winter migrant in 
the West Indies, and its not occurring at all on the western plains, 
I am inclined to believe that the difference in shade of color shows 
the Mexican and the Guatemalan species to be distinct from the 
North American, and entitle it to a specific appellation. 
Smith-! Collec- sex | When ! 
| 
| 
sonian| tor’s | and | Locality. eqniectonee Received from | Collected by 
No. No. | Age.) j y Pai | 
27,015 | .. .. | Selkirk Settlement. | she ‘Donald Gunm:) | i) veieatete 
8,882 | 23 & | Loup Fork of Platte. | July 3. | Lt. Warren. Dr. Hayden. 
13,163 se g¢ |St. Joseph’s, Mo. a6 Lt. Mullan. J. Pearsall. 
6,560 ofa .- | Fort Riley, Kansas. S07 i Draw. Aw Harm 0) os ates 
PQS 5 Pete -. |Carlisle, Pa. | Mar. 9, “44.' S.F. Baird.[mond.|  —......... 
Jas. Fairie. qeshoc 
3,865 BD as | Prairie Mer Rouge L. 
Sialia azurea. 
Sialia azurea, Swatnson, Phil. Mag. I, 1827, 369. 
Sialia wilsonii, Sctarer, P. Z. 8. 1856, 293 (Cordova).—Is. 1858, 299 
(Oaxaca—high lands).—Is. 1859, 362 (Xalapa).—Scuater, Ibis, 
1859, 8 (Guatemala).—Is. Catal. 1861, 11, no. 65.—Taytor, Ibis, 
1860, 110 (Honduras).—Owen, Ibis, 1861, 60 (Guatemala), nest. 
Hab. Eastern Mexico and Guatemala. 
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