576 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



VIKEO SOLITAEIUS, {Wils.) Vieill. 

 Solitary Vieeo. 



One specimen of this rather rare species was secured at Pembina, 

 which is probably about its northern limit. It was taken in the timber 

 of the river- bottom, frequented by three other species of the same genus. 



A fifth species of Yireo, the White-eyed, probably also occurs in the 

 same locality, since it has been found in Minnesota. It was not, how- 

 ever, observed. 



List of specimens. 



COLLURIO LUDOVIGIANUS EXCUBIT0BIDE3, {8w.) Goues. 



White-rumped Shrike. 



This is the characteristic species of the whole region explored, — the lar- 

 ger kind, C. horealts, probably only occurring during its migration to or 

 from the north, and in winter; at any rate, it was uotobserved. TheWhite- 

 rumped Shrike is common in suitable localities, and numerous specimens 

 were secured at different points. At Turtle Mountain, during the last 

 week in July, I found a iaraily of these birds in an isolated clump of 

 bashes. The young, four in number, had just left the nest, which was 

 discovered in the crotch of a bush, live or six feet from the ground. It 

 was one of the dirtiest nests I have ever handled, being fouled with ex- 

 crement, and with a great deal of a scurfy or scaly substance, apparently 

 cast from the feathers of the young during their growth. The nest 

 proper rested upon a bulky mass of interlaced twigs ; it was composed 

 of some white weed that grew abundantly in the vicinity, matted to- 

 gether with strips of fibrous bark. 



List of specimens. 



