122 



ORNITHOLOGY. 



in the Rocky Mountains, but a short distance further east, may take 

 its place in the lower lands during the winter season, when the yellow- 

 billed is said to remove further south." 



3. Genus CYANOCORAX, Boie, Isis, 1826, p. 977. 

 1. Cyanocoeax stelleri {GmeUn). — Steller's Jay. 



Corvus stelleri, Gm. Syst. Nat. I, p. 370 (1788). 



Bonap. Am. Orn. II, Plate XIII, fig. 1 ; Aud B. of Am. Plate 

 CCCLXII, fig. 2 ; oct. ed. IV, Plate CCXXX. 



This species is represented by the naturalists of the Expedition, as 

 having been observed in abundance in Oregon. It appears to be 

 strictly a Western species, and less an inhabitant of the mountains 

 than Cijanocorax macrolo^jhus, Baird, which is the bird figured in 

 Fauna Boreali Americana, Birds, Plate LIV. The latter is nearly 

 related, but quite a distinct species. 



Specimens of this species and many others that we have seen, are 

 remarkably uniform in their characters, even at various ages. Nume- 

 rous specimens are in the collection of the Expedition. 



4, Genus CYANOCITTA, Strickland, Ann. and Mag. Nat. Hist. XV, p. 260 (1845). 

 1. Cyanocitta califoknica {Yirjors). — The California Jay. 



Garrulus cali/ornicus, ViG. Zool. Voj. Blossom, Orn. p. 21 (1839). 



Voy. Blossom, Orn. Plate V ; Aud. B. of Am. Plate CCCLXII, fig. 

 3 ; oct. ed. IV, Plate CCXXXII. 



This species, according to Mr. Peale, " was seen on the Columbia 

 River, and was common in all the country south, to California. It is 

 most partial to mountainous districts." It is also frequently mentioned 

 by Dr. Pickering. 



