1851.] 215 



long periods covered with deep snows, I have never had an opportunity to 

 observe in winter. 



Caprimtjlgi's, TAvn. 



4. C. Carolinensis, Brisa. Chuck-Wills-Widow. 



A few were met with in New Mexico, in June and July. 



Chordeiles, Swains. 



5. C. ViRGiNiANT-s, Briss. Night Hawk. 



Numerous about Santa Fe, and generally throughout N. Mexico, during the 

 summer months. 



Chelidon, Boie. 



6. C. BicoLOR, Vieill. White Bellied Swallow. 



Appeared at Santa Fe in May, and nested there, but was not numerous. 



CoTYLE, Boie. 



7. C. RiPARiA, Bote. Bank Swallow. 



Was more numerous than the last ; nesting also near Santa Fe. 



HiRUNDO, Linn. 



8. H. RUFA, Linn. Barn Swallow. 



This species was rather common at Santa Fe, nesting there. 



SiTTA, Linn. 



9. S. Carolinensis, Briss. Carolina or White Breasted Nuthatch. 



A few were seen in the mountains west of Santa Fe ; where they nested. 



10. S. Canadensis, Linu. Canada, or Red Bellied Nuthatch, 

 Not more than three or four were seen in N. Mexico. 



Anthus, Briss. 



11. A. LuDOviciANUs, Licht. Brown, or American Titlark. 



This little wanderer I saw in N. Mexico, in small flocks, late in autumn. 



Sialia, Swains. 



12. S. ARCTiCA, Swains. Arctic Blue Bird. 



Was first seen on the Rio Grande, about 60 miles below El Paso del Norte. 

 Here they were abundant in the month of March, and were usually collected near 

 the river bank, before sunset, in search of inserls ; when they proved themselves 

 expert in the pursuit, darting from the tops of tall bushes to seize their prey upon 

 the wing, and returning again, in the manner of true fly-catchers. In May, they 

 made their appearance at Santa Fe but were not numerous. Immediately on 

 their arrival, they prepared their nests ; one of these, built in the gravel bank of 

 an arroyo seco or dry creek, I examined. It was composed entirely of dry grass ; 

 but it was well formed, having high walls of considerable thickness, and con- 

 tained six eggs of a marine-blue color. The hole in which the nest was found, 

 and which was in the side of a perpendicular bank, about five feet from the bot- 

 tom, was four inches in diameter and ten in depth. Each brood, (generally seven 

 or eight, including the old birds,) seemed to keep united during the summer. 

 About the first of September, they began to move off". 



