Brewster on a Collection of Arizona Birds. 7S 



when compared with the ones characterizing the other tliree 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-75i and i.oSX-77. Like 

 all the specimens which have been previously reported the}- are 

 entirely unspotted, and both in size and color closelv resemble 

 eggs of the common Robin. 



yuv.. 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. rediviviis or H. lecontei, but with the exception of these, 

 H. crissalis is the only North American species in the sub-familv 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 gruv, — almost 

 white." 



27S. (J ad.. Tucson, April 25. Length. 12.10; extent, 12.50; wing. 3.S4; 

 tail, 6.20: culmen. 1.47. 



309, $ ad.. Tucson, April 30. Length, 11.70; extent. 12.70; wing. 

 4.05; tail, 5.85; culmen. 1.53. 



434, (J ad., Tucson, Ma\' 25. Length, 11.20; extent. 12.30; wing, 4.02; 

 tail. 5._S2 ; 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, (J 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 follows : H. lecontei is 

 exclusively a bird of the deserts. H. bendirei is a desert bird approaching the valleys. 

 H. palvieri occurs along the edge of deserts, occasionally appearing in valleys. H. 

 crissalis haunts vallevs and broad canons, seldom venturing into the deserts." 



