1S2 BULLETIN': MUSEUM OF COMPARATIVE ZOOLOGY. 



the specimens mentioned by Mr. Ridgway. It haa 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 ivhite with occasional 

 small patches or single feathers of a pale j-ellow color and numerous fine, 

 chestnut-rufous streaks on the breast ; the remainder of the under parts pale 

 primrose yeHow 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 (Xo. 15,088, La Paz, March 21, 1887) has 

 the yellow of the under parts dull gtuuboge ; 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 (Rhizapora viangle), 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 acre.s, 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 aliout 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 (Towxs.). 

 Audubon's Warbler. 



Dendroica anduhonii Baird, Rev. Amer. Birds, pt. I. 1865, 188, 189 (Cape St. 



Lucas). 

 Dendroern andnhoni Belding, Proc. U. S. Nat. Mas., V. 1883, 536 (Cape Region) ; 



Yl. 1883, 3-47 (Victoria Mts.). 



