206 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
tinge on the sides; the back paler bluish, the crown light purplish brown; the 
outer tail feathers with their outer webs ashy white to the shaft; the secondaries 
and wing coverts edged and tipped with grayish or rusty white. 
First winter plumage : — (Male, No. 14,789, Sierra de la Laguna, November 
28, 1887). Similar to the young just described, but with the crown deep 
purplish brown; the back darker or more slaty than in the adult; the wings 
and tail more bluish; the inner secondaries tipped with ashy white; the outer 
tail feathers with exceedingly narrow light margins on their outer webs. 
A moulting specimen (No. 14,828), taken on July 28, 1887, has the fore- 
head covered with fresh feathers of the same deep purplish brown as No. 14,789, 
while the worn and faded feathers on the occiput are those of the nuptial 
dress, showing that the.adult assumes a distinctive autumn plumage. Among 
the spring adults in my series, however, there is much individual variation in 
respect to the color of the crown which varies from very pale isabella to pur- 
plish brown nearly as deep and rich as that of autumnal birds. 
Like the Ashy Titmouse, Grinda’s Bush-Tit is confined to the mountains 
south of La Paz. It is represented in the northern portions of the Peninsula 
‘* from El Rosario northward ” (Bryant) by the closely-allied form, P. minimus 
californicus, the two being separated geographically by a region over four hun- 
dred miles in width, where no member of the genus is known to occur. Mr. 
Belding (who discovered both birds in 1883) draws no distinction between the 
respective vertical ranges of P. 7. cineraceus and P. grinde, but Mr. Frazar 
found that the latter has much the more extended vertical distribution of the 
two, occurring almost as numerously about San José del Rancho as on the 
Sierra de la Laguna. It is a sedentary species, of which each individual bird 
probably spends its entire life within a very limited area, for Mr. Frazar 
noticed no marked seasonal variations in the number of its representatives at 
any of the localities which he visited. 
A nest found on May 24 in the top of a small pine about eight feet above 
the ground, on the Sierra de la Laguna, is similar in shape to the nests of 
P. m. californicus and P. plumbeus. It is nine inches long, with a diameter 
varying from two to two and one half inches. The entrance hole is in one 
side near the top. The walls are composed of small, dry leaves, fern-down, 
catkins, spiders’ cocoons, yellowish usnea and grayish lichens, all these mate- 
rials being felted into a thick, tenacious fabric of a generally mixed brown and 
grayish color. There were no eggs, the nest being not quite finished when 
taken. 
Auriparus flaviceps lamprocephalus Oseru1 
Batrp’s VERDIN. 
Paroides flaviceps (not Aegithalus flaviceps SUNDEVALL) Barrp, Proc. Acad. Nat. 
Sci. Phila., 1859, 801 (Cape St. Lucas), 304 (crit.; Cape St. Lucas). 
1 Most of the differences which distinguish this subspecies from true flaviceps 
were originally pointed out by Professor Baird (Rev. Amer. Birds, pt. I. 1864, 
85, 86). 
