368 
U. S. P. R. E. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 
under parts being little if at all appreciable. There is, perhaps, a stronger tendency to bars on 
the upper parts and sides. Whether these features should be considered as establishing a dis- 
tinct species I am not prepared fully to admit, but adopt Audubon's name as a provisional one 
for the western form. 
Audubon compares his T, parlcmanni with T. hyemalis. The differences are, however, very 
great, and the comparison should be made much rather with aedon. 
List of specimens. 
Cat. 
No. 
Sex & 
Locality. 
When col- 
lected. 
Orig'l 
No. 
Collected bv — 1 Length. 
" 1 
Stretch 
Win". 
Remarks 
4731 
4737 
5278 
4739 
4710 
4735 
4741 
4742 
4736 
8211 
4743 
5646 
7139 
7135 
7136 
7137 
5517 
713S 
Blackfoot country 
July 1855 
July —,1855 
May 11,1856 
May 15,1856 
July —,1856 
An 
9 
3 
3 
3 
4.50 
4.75 
4.50 
6.50 
6.87 
6.00 
2.00 
2.12 
2.00 
Fort Lookout, Neb. . . 
Near Council Bluffs.-. 
do 
Ap il 25,1856 
May 14,1856 
May 15,1856 
May 15,1656 
May 12,1856 
April 26, 1856 
Sept. 18, 1857 
April 24,1856 
July 7,1856 
do 
4.87 
5.12 
5.00 
4.37 
4.75 
4.25 
5.00 
4.75 
6.50 
6.50 
6.75 
6.75 
6.25 
6.87 
6.50 
2.12 
2.25 
2 50 
2.25 
2.12 
2.25 
2.12 
2.00 
iln 
3 
[ do 
An 
Fort Laramie 
Upper Missouri 
W. M. Magraw. .. 
Lt. Warren 
193 
Dr. Cooper .... 
Dr. Haydcn.... 
W. S. Wood . . . 
Iris brown, bill flesh, feet light 
brown. 
3 
3 
o 
3 
CharcoEscondido, M.x 
76 
127 
363 
380 
887 
4.50 
6.00 

2.00 
Bill slate, ryes dark brown.. 
Dr. Suckley 
May 3, 1856 
do 

3 
3 
Petaluma, Cal 
May 25,1856 

Lt. Williamson.. . 
Dr. Ileermann. 
.TROGLODYTES AMERICANUS, Aud. 
Wood Wren. 
Troglodytes cane ricanus, AuD.Oni. Biog. II, 1834, 452 : V, 1839, 469 ; pi. 179.— Ib. Birds Amer. II, 1841, 123;pl. 119- 
Troglodytes sylveslris, Gambel, Pr. A. N. Sc. Ill, 184b, 113, (actually refers to T. pmkmanni, .[though quoting Audu- 
bon as above.) 
Sp. Ch. — Similar in size and color to the T. aedon; the bill shorter, the tail more graduated. Colors throughout much 
darker ; no light line over the eye, but the sides of the head and neck much like the crown. The lores and ear coverts with 
the shafts of the feathers scarcely lighter. Length, 4.50 ; wing, 2.00 ; tail, 1.85. 
Hah— Eastern United States. 
If I am correct in the reference of No. 2951 to this supposed species of Mr. Audubon, it is 
very similar to T. aedon, but appears to have a shorter and stouter bill. The size and propor- 
tions are very nearly the same, though given by Audubon as considerably larger. The colors 
generally are considerably darker, with very little reddish : most distinct on the rump. There 
is no light line over the eye ; in fact the sides of the head and neck are almost uniform brown, 
with their upper parts being slightly relieved only by pale shafts to the ear coverts, and perhaps 
to the loral feathers. The under parts are considerably darker, the throat and breast almost 
brownish ash, the middle of the belly only whitish. 
