Brewster on a Collection of Arizona Birds . 
and showing other signs of anxiety respecting its contents. The 
position of the Camp Lowell nest is not mentioned. 
Juv., first plumage, $ (No. 619, Yuma. July 15). Crown pale cine- 
reous; rest of upper parts faded brown. The wings are uniform with the 
back, but all the primaries and secondaries have a broad white edging on 
their outer webs. The tail is dull black, with white areas on the outer 
rectrices corresponding in extent and purity with those of the adult. Be- 
neath, pale ashy white. 
A study of the large series of Gnatcatchers collected during the past 
season confirms the views which I lately advanced (this Bulletin, Vol. 
VI, p. 101) regarding the affinity of P. plumb ea and P. “ melanura ,” and 
also affords additional evidence of the assumed specific distinctness of P. 
calif ornica. The Yuma examples of P. plumbea are quite as typical as 
those taken at Tucson and Camp Lowell, while seven specimens of cali- 
f ornica, collected at Riverside after Mr. Stephens’ return to that place, 
still further attest the constancy of most of the characters which I assigned 
to the latter bird. That relating to the brown edging of the secondaries 
will, however, have to be abandoned, for plumbea proves to be similarly 
characterized when in worn breeding dress ; the supposed shorter tail of 
calif ornica also is now shown to be an inconstant feature. All of the three 
young males taken at Riverside have black lateral crown-stripes like those 
of immature plumbea . 
267, $ ad., Tucson, April 23. Length, 4.60; extent, 5.80; wing, 1.85; 
tail, 2.15; bill (from nostril), .25; tarsus, .67. ‘‘Iris dark brown;” lores 
ashy mixed with black; eyelids “white. 
500, $ ad., Tucson, June 7. Length, 4.60; extent, .5.80; wing, 1.81 ; 
tail, 2.12; bill (from nostril), .25; tarsus, .65. Lores ashy mixed with 
black; upper eyelid white. 
564, $ ad., Camp Lowell, June 22. Length, 4.55; extent, 5.80; wing, 
1.84; tail, 2.19; bill (from nostril), .25; tarsus, .70. Lores black; both 
eyelids white. 
567, $ ad., Camp Lowell, June 22. Length, 4.40; extent, 5.60; wing, 
1.84; tail, 2.16; bill (from nostril), .26; tarsus. .70. Lores and super- 
ciliary line white mixed with black. 
581, $ ad., Camp Lowell, June 24. Length, 4.40; extent, 5.80 ; wing, 
1.98; tail, 2.20; bill (from nostril), .28; tarsus, .70. Lores ashy. 
618, $ ad., Yuma, July 15. Length, 4.40; extent, 5.80; wing, 1.90; 
tail, 2.15; bill (from nostril), .26; tarsus, .68. ' Lores, with broad super- 
ciliary lines meeting across the forehead, white. 
621, $ juv., first plumage, Yuma, July 16. Length, 4.40; extent, 5.60; 
wing, 1.76; tail, 2.13; bill (from nostril), .26; tarsus, .72. Sides of head 
ashy white ; ill-defined, black, lateral crown-stripes partially concealed. 
272, $ ad., Tucson, April 23. Length, 4.50; extent, 5.50; wing, 1.78; 
tail, 2.21 ; bill (from nostril), .27 ; tarsus. .68. “Had just finished laying.” 
458, $ ad., Camp Lowell, May 31. Length, 4.50; extent, 5.50; wing, 
1.86; tail, 2.13; bill (from nostril), .26; tarsus, 68. 
