Brewster on a Collection of Arizona Birds. 75 
when compared with the ones characterizing the other three spe- 
cies named by Dr. Coues, is sufficiently apparent.* 
A nest received from Mr. Stephens is precisely similar to those 
found by Captain Bendire. The three eggs which it contained 
measure respectively, I.I4X-76, I.I4X-75’ an< ^ i*o8X *77* Like 
all the specimens which have been previously reported they are 
entirely unspotted, and both in size and color closely resemble 
eggs of the common Robin. « 
Juv.. first plumage ($, No. 546, Camp Lowell, June 20). Above dull 
reddish-brown. Rump and a broad tipping on the tail, brownish-chestnut. 
Under parts nearly uniform brownish-fulvous. Crissum chestnut, of 
nearly the same shade as in the adult. Maxillary stripes dusky brown. 
No trace of spots or other dark markings either above or beneath. 
Five other young birds in the series are essentially similar and call for 
no special comment. I cannot find any description of the first plumage 
of either H. redivivus or H. lecontei , but with the exception of these, 
H. crissalis is the only North American species in the sub-family Mimi- 
nce whose young are entirely unmarked beneath. It is interesting to note 
that with respect to the color of the upper parts, especially that of the 
rump, they resemble the young of both H. bendirei and H. palmeri. 
The individual variation presented by the adults before me is chiefly 
confined to the relative length and curvature of the bill, the general col- 
oring of all being nearly uniform, although the breeding birds are slightly 
paler than those taken early in the season. 
166, $ ad., near Tombstone, April 5. Length, 12.10; extent, 12.30; 
“Iris light brown. Stomach contained insects^and a small lizard .” 
251, $ ad., Tucson, April 21. Length, 12.60; extent, 12.60; wing, 
4. 1 1 ; tail, 6.25; chord of culmen. 1.56. “Iris light gray. — almost 
white.” 
278, $ ad., Tucson, April 25. Length, 12.10; extent, 12.50; wing, 3.84 ; 
tail, 6.20; culmen, 1.47. 
3°9,j $ ad., Tucson, April 30. Length, 11.70; extent, 12.70; wing, 
4.05; tail, 5.85; culmen, 1.53. 
434, $ ad., Tucson, May 25. Length, 11.20; extent. 12.30; wing, 4.02; 
tail, 5.52; culmen, 1.43. 
503, $ ad., Tucson, June 8. Length, 11.40; extent, 12.10; wing, 3.85; 
tail, 5.85; culmen, 1.46. 
578, $ ad., Camp Lowell. June 23. Length, 11.60; extent, 12.60; wing, 
4.05; tail, 5.75; culmen, 1.45. 
437, $ juv., first plumage, TuCson, May 26. Length, 11.30; extent, 
12.40; wing, 3.92; tail, 5.50; culmen, 1.18. 
* In a recent letter Mr. Stephens adds: — “From my own observations, I should 
characterize the respective haunts of the Arizona Thrashers as follow’s : H. lecontei is 
exclusively a bird of the deserts. H. bendirei is a desert bird approaching the valleys. 
H. palmeri occurs along the edge of deserts, occasionally appearing in valleys. H. 
crissalis haunts valleys and broad canons, seldom venturing into the deserts.” 
