188 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Miraflores and Santiago Peaks; Agua Caliente). Snanrpr, Cat. Birds Brit. 
Mus., X. 1885, 356, 357 (descr. ad. male from San José del Cabo). A. O. U., 
Check List, 1886, 815, no. 682. Cours, Key N. Amer. Birds, 4th ed., 1894, 
870 (descr. ; Lower Calif.). Bryant, Proc. Calif. Acad. Sci. 2d ser., II. 
1889, 20-22 (descr. nest, eggs, and immature plumage from Comondu), 810- 
312 (quotes Belding as to locality; Comondu; n. to San Ignacio; descr. 
song; measurements). ALLEN, Auk, X. 1895, 142 (tropical type). 
G.[eothlypis] beldingi Bryant, Zoe, I. 1891, 192 (San José del Cabo). Ripewar, 
Man. N. Amer. Birds, 2d ed., 1896, 524 (descr. ; s. portion of Lower Calif.). 
[ Geothlypis] beldingi DuBois, Synop. Avium, fasc. VI, 1901, 487 (Basse-Californie). 
The large series of specimens obtained by Mr. Frazar probably illustrates 
every stage of plumage through which this beautiful species regularly passes. 
Three males, collected in April, agree closely with Mr. Ridgway’s description 
of the specimens taken by Mr. Belding. A fourth, shot on June 20, at 
Triunfo, disagrees in having a poorly defined but nevertheless rather con- 
spicuous yellow band across the fore part of the back. A female, taken on 
April 21, differs slightly from Mr. Ridgway’s type in having a narrow but 
‘perfectly distinct yellowish superciliary stripe and a few dusky feathers in 
the malar region. The five birds just mentioned are all that Mr. Frazar 
secured in spring. 
Age and seasonal variations: — Young in juvenal plumage. Female (No. 
15,275, San José del Cabo, September 5, 1887). Above du]l brownish drab, 
the wings faintly, the tail distinctly, tinged with olive; greater and middle 
wing coverts edged and tipped with rusty, forming obscure wing bands; below 
pale brownish buff, deepest on the sides, abdomen, and upper portion of the 
breast, unmixed with yellow save on the chin, where there are a few bright 
yellow feathers, evidently those of the first winter plumage; bend of wing 
slightly yellowish ; under surface of wing ashy white; lores with a faint 
yellowish tinge. 
Another specimen, apparently of about the same age, taken on September 12, 
is generally similar but rather browner above and on the breast and throat. 
A young male, obtained on.August 23, differs from both of the specimens just 
described in having a few dark olive feathers on the back, a patch of bright 
yellow on the chin and upper part of the throat, a good many yellow feathers 
sprinkled over the breast, some black feathers in the lores, and a short black 
malar stripe. A careful examination of its plumage shows that all these olive, 
yellow, and black feathers belong to the first winter plumage, which was evi- 
dently just beginning to start when the bird was killed. Some of the feathers 
of the under parts, which appear to belong to the juvenal plumage, are, how- 
ever, distinctly yellowish buff, as in the young bird described by Mr. Bryant. 
Adult male in autumn. Differing from the spring male only in having the 
yellow of the crown paler and tinged with grayish white; the upper parts of a 
deeper, browner olive, tinged slightly on the occiput and nape with purplish 
brown ; the yellow of the under parts richer with more decided brownish on 
the sides and flanks; the base of the lower mandible flesh colored ; the remainder 
