182 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
the specimens mentioned by Mr. Ridgway. It has the head dull chestnut, very 
pale and mixed with whitish on the throat, mottled with greenish on the crown ; 
the jugulum, sides of the neck and the middle of the breast whate with occasional 
small patches or single feathers of a pale yellow color and numerous fine, 
chestnut-rufous streaks on the breast; the remainder of the under parts pale 
primrose yellow mixed with whitish. The back, wings, and tail are nearly as 
in the adult female. The upper mandible is of the usual dusky horn color, 
but the basal half of the lower mandible of a pale flesh color. The plumage, 
generally, has a worn, and faded appearance. 
One of the females in my series (No. 15,088, La Paz, March 21, 1887) has 
the yellow of the under parts dull gimboge ; the crown and superciliary stripe 
tinged with rufous; the throat obscurely streaked with rufous chestnut. There 
are also a few nearly obsolete chestnut streaks on the breast. 
In the winter and early spring of 1881-82 Mr. Belding found this beautiful 
Warbler “common in the shrubbery around the Bay of La Paz.” It was “also 
seen at Pichalinque Bay and Espiritu Santo Island. It frequented almost ex- 
clusively the mangroves (Rhizopora mangle), and is probably resident.” During 
January, February, and a part of March, 1887, Mr. Frazar repeatedly visited all 
the mangrove thickets that he could find near La Paz, and made every effort to 
secure a good series of these Warblers, but he took only eight in all and did not 
shoot more than a pair in any one day. He notes the bird as “rare,” but adds 
that “its numbers increased slightly in March.” It cannot be very numerous 
here at any time, for the total area covered by its favorite mangroves is very 
limited. Indeed, the place where most of his specimens were obtained ‘*‘ com- 
prises only about two acres, through which winds a small creek, fordable at low 
tide; but at high water everything is submerged up to the lower branches of 
the mangroves. I always found the birds working near the surface of the water 
on the stems of the mangroves or hopping about on the mud, but the males 
resorted to the tops of the bushes to sing. Their notes are similar in general 
character to those of the Yellow Warbler.” 
Mr. Bryant heard the Mangrove Warbler singing “in the mangroves border- 
ing the long estero northward from Magdalena Bay, and in the mangroves on 
Santa Margarita Island,” where a male was seen by him on March 2, 1889. 
It is not unlikely that the localities just mentioned represent the extreme 
limit of northward distribution of this bird. Southward it is known to range 
as far as Mazatlan on the western coast of Mexico. On the Atlantic coast of 
Central America from Belize to Merida, Yucatan, it is replaced by the closely 
allied D. bryanti. 
Dendroica auduboni (Towns.). 
AUDUBON’S WARBLER. 
Dendroica audubonii Barrp, Rev. Amer. Birds, pt. I. 1865, 188, 189 (Cape St. 
Lucas). ; 
Dendroeca auduboni Betpine, Proc. U. S. Nat. Mus., V. 1883, 536 (Cape Region) ; 
VI. 1883, 547 (Victoria Mts.). 
