HELMINTHOPHAGA. 
177 
Specimens from the Youkon seem to show traces of hybridity with 
peregrina, one skin especially (27,326) in which the cheeks and 
forehead are as pure gray as in peregrina, while all the other char- 
acters are those of celata. 
This same apparent tendency to hybrid- 
ism in Youkon specimens is seen in other species, as between Junco 
hyemalis and oregonus, etc., and may be explained by the fact of this 
region being in the boundary line of the breeding grounds of these 
closely allied representative species. 
A specimen of celata, from Georgia, shows no trace of orange in 
the crown, and is much darker in color, and with larger bill than in 
western ones. 
Mr. Audubon speaks of the H. celata as being common and gener- 
ally distributed through the Hastern States, and breeding abundantly 
I have myself never seen or heard 
of any specimens from east of the Mississippi Valley, excepting a 
few taken in Georgia and Florida, and near Philadelphia, and these 
in Maine, New Brunswick, ete. 
may belong to a different species. 
specimen from Dane Co., Wisconsin. 
Specimens are in the collection from many localities in the Pacific 
region of the United States up to the northern boundary, and east 
to the Rocky Mts. 
Smith- Collec-) Sex 
sonian| tor’s | and 
No. No. | Age. 
7 7-7 ad an 2 Se a 
DYE BREF |) SSS TN NM | ete) 
19,241 | 507] Q 
27,228 | 1,301 Q 
7,925 vs 2 
12,852 is ot 
20,442 | 3,408} .. 
32,706 40,774 | @ 
Locality. 
Ft. Youkon. 
ac 
Ft. Resolution. 
Fort Simpson. 
Dane County, Wis. 
[Lucas. 
Georgia. 
San Jose, Cape St. 
Mexico. 
When 
Collected. 
| June 10, ’61. 
June 15, ’61. 
May 22, ’60. 
Nov. 25, ’59. 
Received from 
R. Kennicott. 
“ce 
“ce 
B. R. Ross. 
Th. Kumlien. 
J. Ackhurst. 
J. Xantus. 
Verreaux. 
The Institution possesses one 
Collected by 
| 8. Kennicott. 
(27,325.) With eggs. 
east of the Missouri River. 
Helminthophaga virgimniae. 
(12,852.) This and the last the only specimens in the collection from 
‘Helminthophaga virginiz, Barrp, Birds N. Am. under explanation of 
plates, 1860, xi, pl. 79, fig. 1 (Fort Burgwyn, N. M.). 
Hab. Southern Rocky Mts. (middle province U. S.). 
Similar to H. ruficapilla. 
Top and sides of head, back, and wings light 
ashy plumbeous, with an almost imperceptible wash of olivaceous green; 
quills and tail feathers brown, edged with pure ashy plumbeous, the latter 
indistinctly and narrowly margined with whitish internally and at the end. 
Rump, with upper and lower tail covert bright yellow, in vivid contrast with 
the rest of the body. Crown with a concealed patch of orange-brown. 
Rest 
of under parts brownish-white, with indications of yellow from chin to breast, 
12 April, 1865, 
