20 CALIFORNIA ACADEMY OF SCIENCES. 



DESCRIPTIONS OF THE NESTS AND EGGS OF SOME LOWER 

 CALIFORNIAN BIRDS, WITH A DESCRIPTION OF THE 

 YOUNG PLUMAGE OF GEOTHLYPIS BELDINGI. 



BY WALTER E. BRYANT. 



Geothlypis beldingi Kidgw. 



Belding's Yellow-throat. — This w^arbler was first known 

 from specimens taken at San Jose del Cabo in April, 1882, 

 by Mr. L. Belding, but the eggs have since remained un- 

 known so far as the obtaining of an authentic nest is 

 concerned. 



In the Proceedings of the U. S. National Museum (Vol. 

 Y, p. 546), Mr. Belding says: " Their habits are quite like 

 those of G. trichas, and the eggs not materially different, 

 if a nest found by my guide on the Miraflores and Todos 

 Santos trail May 6, belonged to this species, as I supposed 

 it did, having seen a fine male near the spot from which it 

 was taken." 



As these eggs were not preserved, the eleven herein de- 

 scribed are presumably the first and only ones known. 



In March and April, 1888, I found this species breeding 

 at Comondu, Lower California, the only locality in which I 

 found it that year, and the most northern point (at that 

 time) from which it 'had been obtained. No nests were 

 found during March, 1888, and by April the young were 

 flying. 



I Avas fortunate in visiting Comondu during the latter 

 part of March of this year, and made a special effort to col- 

 lect the eggs of this species, and by offering a cash reward 

 interested some Mexican boys in the search. This resulted 

 in five nests being found, from four of which eggs were 

 taken, eleven specimens in all. 



To Mr. T. S. Brandegee, the well known botanist, who 

 accompanied me, is due the ciedit of finding the first 



2d Ser.,Vol. n. Issued June 20, 1889. 



