230 U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
One specimen, 4469, differs in a decided tendency to white about the throat and neck; the 
feet are darker, the claws shorter, stouter, and more curved. The specimen is not in suffi- 
ciently good order to show whether this whiteness of the throat is characteristic or an indica- 
tion of a tendency to albinism. It° may be proper to remark, however, that most of the Old 
World species are characterized by the white throat. 
Skins from Fort Massachusetts differ from the others in having the bill entirely black; the 
other characters are very similar; the colors generally are purer, the feathers being less edged 
with paler. 
List of specimens, 
: Ss . Ne al\i3" |) 
6 ; a S'4| es eal reall eas : 
Zz Locality. When col- Whence ob- Collected by— ala 2 Ea leoulone 8 | & Specimen 
= lected. tained. Boss EON aS Hires 5 || & | measured. 
Sele SR | le els les] als 
& | a aja |FlelJelS (|S -)a]s 
| | | 
2841 sees] N.W. codst Oregon 2... occ.|scrccccccecces S. F. Baird..... [Ue OWNEENG sc ctllistere |\s'scina'ells.sisie| Mciatel| eis’ cfeiseil rele slele ecbll sletel sretelare eee 
QBGZ |cccleccsoues COrcieciew/aialealsiveciseters ec cecces coccce|ccccer Oc -jaacesie|lesecesie dG). .cencwees oa slloocoas sod hoc ltacel lbans| lasance secjellccs|lvenajnteton 
8121 | O | St. Mary’s R. mountains...) Oct. 13,1853 | Gov. Stevens..| Dr. Geo. Suckley.../8.50| 12.50/3.75]....]..0.|.c0.|-eeeee onan|oscd||Soge0000 c 
"099 | eels eyes Ova see ve bosac secs: 
4469 |....| Cascade mountains, O. T...). 
8120 | g | Tejon Pass ........005 Seale 
8496 | g\| Fort Mass. N.M.. + 31,1836 7.50}. 
8495* 3 wile) eses Os. cece vee + 27,1856 B50} S11 00 |e cil lerete' || <taieial||srelecall eererelere seer |coceleoee neces A 
SUU7a ears | OLE LUNGMNec ccc cslcicisicciriccies llncleelvatertetcice e's | Dr. Henry ..... Ne ARORA CSCOEEE EA | WeOClececes 3.90/2.40/1.20/1.10) 0.28/0.76)1.04) Dry..... 5 
* Eyes light brown, 
