DENDRECA. 133 
tepec city (Sumichrast™); Guatemata (Skinner *); Panama, line of railway 
(M‘Leannan ? °), Chepo (Arcé), Turbo, Truando (A. Schott ® §).—CoLomsra 4 ®. 
Of the Bay-breasted Warbler little is known in either Mexico or Central America 
except in the Colombian State of Panama, where it would appear to be not uncommon 
during the winter months. In Mexico the sole record of its occurrence is Professor 
Sumichrast’s’; and in Guatemala it is equally rare; for though we were able to include 
it in the list of the birds of that country *, we have never since seen a single specimen 
from there amongst the thousands of bird-skins we have examined. In Costa Rica it 
has not yet been detected at all. In its migration to and from its winter quarters, 
D. castanea, like several of its congeners of the Eastern States, passes the West Indies 
without stopping, barely touches Mexico or Guatemala, but makes straight for the 
Isthmus of Panama and the north-western parts of South America. In the latter 
district it isnot uncommon; and Messrs. Wyatt and Salmon both met with it, the former 
at Naranjo, in the Magdalena valley, and the latter at Remedios, in the adjoining Cauca 
valley. 
For its summer quarters D. castanea makes for Northern New England, and thence 
spreads to the shores of Hudson’s Bay“, in which district it breeds. Southward of this 
it is known as a bird of passage as far west as the great plains. 
The nest is described by Brewer” as large for the size of the bird, and composed 
outwardly of fine twigs mingled with long hanging mosses; the lining neatly and 
smoothly made of black fibrous roots, seed-stalks of mosses, and a few hairs. The eggs 
he describes as bluish green, thickly spotted with brown, and generally with a ring of 
confluent blotches of brown and lilac round the larger end. 
d’. Gula flava aut aurantiaca. 
10. Dendreca blackburniz. 
Motacilla blackburnie, Gm. Syst. Nat. i. p. 977". 
Rhimamphus blackburnia, Scl. P. Z. S. 1855, p. 143°; 1858, p. 64°. 
Dendreca blackburnia, Scl. P. Z. S. 1859, p. 863 *; Scl. & Salv. Ibis, 1859, p.11°; Cab. J. f. Orn. 
1860, p. 828°; Lawr. Ann. Lyc. N. Y. vii. p. 4687, ix. p. 94°; Bull. U.S. Nat. Mus. no. 4. 
p. 15°; Baird, Rev. Am. B. i. p.189"; Salv. P.Z.S. 1867, p. 186; 1870, p. 183; Ibis, 
1872, p. 314°; Sumichrast, Mem. Bost. Soc. N. H. i. p. 547"; v. Frantzius, J. f. Orn. 
1869, p. 293"; Baird, Brew. & Ridgw. N. Am. B.i. p. 237%; Merrill, Pr. U.S. Nat. Mus. 
i. p. 123'7; Coues, B. Col. Vall. i. p. 284°; Tacz. P.Z. S. 1874, p. 508”. 
Sylvicola blackburnie, Sw. Phil. Mag. new ser. i. p. 434”; Bryant, Pr. Bost. Soc. N. H. vii. 
p. 110”. 
Supra nigra, uropygii plumis fusco vix limbatis; alis et cauda fusco-nigris cinereo limbatis, illis albo bifasciatis, 
hujus rectricibus tribus externis intus plaga alba gradatim latius notatis ; capite summo, superciliis, macula 
suboculari et gutture toto lete aurantiacis; loris et genis nigerrimis, abdomine et crisso albis; hypochondriis 
