162 BULLETIN OF THE 



SYLVICOLID^J. 



11. Dendrceca Auduboni. Common up to the limit of trees. 



12. Wilsonia pusilla. Abundant. Most numerous among the low 

 willows above the limit of trees. 



HIRUNDINIDjE. 



13. Hirundo horreorum. Common at Montgomery. In clear weather 

 flies to the tops of the mountains. 



14. Hirundo bicolor. Common about Montgomery, and seen far 

 above timber-line. 



15. Hirundo lunifrons. A few seen in company with the preceding. 



FRINGILLID^. 



1G. Leucosticte tephrocotis.* Common above timber line on Mount 

 Lincoln, breeding among the snow-fields. The common form of L. 

 tephrocotis appears to be abundant in winter throughout the mountains 

 of Colorado, whence I have seen specimens collected near Denver. I 

 also met with it in December on the plains of Wyoming Territory, near 

 the Medicine Bow Mountains. 



17. Carpodacus purpureus. Common at Montgomery. 



18. Chrysomitris pinus. Common up to the limit of trees. 



19. Passerculus savanna. Common in the valley of the Platte, and 

 also numerous on the mountains above timber line. 



20. Pocecetes gramineus. Common, ranging considerably above 

 timber line. 



* The specimens (4 d 2 ? ) of Leucosticte obtained on Mount Lincoln differ very much in 

 color from winter specimens of Leucosticte tephrocotis, as well as from any figure or 

 description of any form of Leucosticte I have seen. Whether they represent more than 

 the breeding plumage of L. tephrocotis or a well-marked southern form of that species I 

 am at present uncertain, being without summer specimens of that species. The follow- 

 ing is a description of the Mount Lincoln specimens : Male. Bill entirely black, or in some 

 specimens with a faint trace of yellow at the base of the lower mandible. Nasal feathers 

 whitish ; front of head black, fading to sooty brown on the mentum; no ashy nuchal 

 collar as in winter specimens of L. tejjhrocotis; above umber brown, each feather 

 broadly edged with bright red, fading to rosaceous on the rump and upper tail-coverts; 

 throat sooty brown, tinged slightly with red ; breast umber brown ; rest of under parts 

 crimson, fading to bright rosaceous posteriorly; wings and tail dusky, tinged with crim- 

 son, especially on the basal portions; lesser wing-coverts bright rosaceous. Length 

 6.25 to 6.75; alar extent, 11.75 to 12.60; wing, 4.05 to 4.20; tail, 2. GO to 2.87. Female 

 similar, but duller colored and smaller. Different specimens vary considerably in the 

 intensity and amount of red. Besides wanting the gray nuchal collar, these specimens 

 have the rosaceous of winter specimens replaced by bright red, and the bill black 

 instead of yellow. 



Since writing the above, I have had an opportunity of examining several specimens 

 of Leucosticte killed at Central City, Colorado, in March, 1S69, by Mr. F. E. Everett, and 



