DESCRIPTION OF CAMPS. 



331 



44. Biitorides virescens Abundant. 



45. Nyctiardea uaevia Common. 



46. Gallinula galeata Ahundant. 



47. Fiilica araericana Abundant. 



48. Anas boschas Abundant. 



49. Chaulelasmus streperus Abundant. 



Qiierquedula cyanoptera Ahundant. 



Aythya sp.? Abundant. 



Ijarus sp. 1 Abundant. 



50, 

 51. 

 52, 

 53, 



Sterna forsteri ? Abundant. 



54. Ilydrochelidon lariforiuis Abundant. 



Having alluded to the close similarity between the bird-fauna of tne 

 vicinity of Sacramento City and that of a locality of corresponding latitude 

 in the Mississippi Valley, we select from the above list the species not 

 belonging to the latter locality, they being as follows : — 



1. Vireo pusillus. 



2. Carpodacus frontalis. 



3. Spizella breweri. 



4. Cyanospiza amceua. 



5. Hedymeles melanocephalus. 



6. Pipilo oregonus. 



7. Agehiius tricolor. 



8. Icterus buUocki. 



9. Tyranuus verticalis. 



10. Sayornis nigricans. 



11. Contopus ricbardsoui. 



12. Calypte aunte. 



13. Trocbilus alexandri. 



14. Colaptes mexicanus. 



15. Speotyto hypogaja. 



16. Querqnedula cyanoptera. 



Twelve of the above species are repesented east of the Rocky Mount- 

 ains by species so similar in appearance or habits that, to the common 

 observer, they might readily pass for the same birds. These represent- 

 ative species are the following: — 



Watem repreientativet. E<uUm rcprttenUUiva. 



Vireo pusillus, representing Vireo belli. 



Spizella breweri, representing Spizella pallida. 



Hedymeles melanocephalus, representing Eedymeles ludovicianus. 



Cyanospiza ania'ua, representing Cyanospiza cyanea. 



Pipilo oregonus, representing Pipilo cry tlirophtbalmus. 



Icterus bullocki, representing Icterus baltiniore. 



Tyrannus verticalis, representing Tyrannus carolinensis. 



Sayornis nigricans, representing Sayornis fuscus. 



Contopus richardsoni, representing Contopus virens. 



Trocbilus alexandri, representing Trocbilus colubris. 



Colaptes moxi(;anus, representing Colaptes auratus. 



Querqucdula cyanoptera, representing Querquedula discors. 



