368 U. 8S. P. R. R. EXP. AND SURVEYS—-ZOOLOGY—-GENERAL REPORT. 
under parts being little if at allappreciable. There is, perhaps, astronger 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 7’. parkmanni with JT. hyemalis. The differences are, however, very 
great, and the comparison should be made much rather with aedon. 
List of specimens. 
Cat. Sex & Locality. When col- | whence obtained. orig’! Collected by— | Length. | Stretch | Wing. Remarks. 
No. | age. | | _ lected. | No. | | of wings 
| | | 
DOT Di lectesisle Blacktoot country...) July —,1855 | Lt. Warren,..... aeiererels | Dr. Hayden. «..\|ssecere|vocesces | Selneicaes! sie . 
5274). 2.5 Wess dOmsccarsieceses |:July, —-s(1805!|'.0+c0+dOl-.c-c+-cullcencss|vossesOsseesesi |evesignss|tecwoees ener 
A734 Q Upper Missouri ...... May 11,1856)....., 6.50 | 2.00 
ZUR Gh cllescers dO...seseeeceees| May 15,1856 6.87 | 2.12 
5276 @ | Fort Lookout, Neb...| July —,1856|.. 6.00 | 2.00 
4739 | @ | Near Council Blufts..| April 29 .....] . see Brel Nactere 
4740 | ..c00e Bald island, Neb......- Ap: il 25, 1856 |...... 6.50 2.12 | Eye brown.. 
AT35 | eeacee Upper Missouri...... | May 14,1856 |..... 6.75 | 2.25 | Iris hazel.... 
4741 «| May 15,1856 i 6.50 | 2.50 escccccsce 
4738 -| May 15,1856 |...... 3 6.75 2.25 | Iris light brown 
4742 oe| May 12,1856 )...... . . ceeees rit 6.75 | 2.12 |...eees. Ov. cer cvecseccccece . 
4736 | GQ | North Platte......... | April 26, 1856 |...... \4s05" | gro5iall| To.obralece: dase rececscouse me eseees 
B211 | .eeee Fort Laramie........ | Sept. 18, 1857 | W.M. Magraw...| 193 | Dr. Cooper wees] 5.00 6.87 | 2.12 | Iris brown, bill flesh, feet light 
| } | brown. 
4743 | ceceee Upper Missouri,.....| April 24,1856 | Lt. Warren....+.|.sceee | Dr. Hayden,...| 4.75 6.50 | 2.00 | Eye light brown. ...0. cesses 
5646 3 South Platte......... July 7,1856| Lt. Bryan........ soecee| We Se WO0d 22.) 2000 ceesloccccccs(eoe eecscleceeencesce ee teccccece ereeees 
7139 SO | Charco Escondido, Mx).... 
7135 O | Fort Steilacoom.. | 
LOGIN Pra elle. dene DOsearece ce 
TIBT | cocces| scccee MOss: cjesies ecccccecccccselecce . 
5517 of Petaluma, Cal.... | May 25,1856) E. Samuels 
7138 rh Sacramento Valley 
.TROGLODYTES AMERICANUS, Aud. 
Wood Wren. 
Troglodytes americanus, Aup. Orn. Biog. II, 1834, 452: V, 1839, 469; pl. 179.—Is. Birds Amer. II, 1841, 123; pl. 119. 
Troglodytes sylvestris, GamBeL, Pr. A. N. Sc. UI, 1846, 113, (actually refers to T. paikmanni,;though quoting Audu- 
bon as above.) 
Spe. Cu.—Similar in size and color to the JT. 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. 
Hab.—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 7’. 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. ¢ 
