Petrels. 



98. Black-capped Petrel {/Estrelata hasitata). L. 



16. Ads. Above sooty brown; back of neck and up- 

 per tail coverts white; base of tail white. 



Range. — Tropical Atlantic; irregular in United States (Florida, Vir- 

 ginia, New York, Kentucky, Vermont, and Ontario.) 



1 03. Least Petrel [Halocyptena microsomal. L. 5. 7. 

 Ads. Sooty blackish brown, lighter below. 



Range. — "Coast of Lower California south to Panama." (A. O. U) 



105. Forked-tailed Petrel {Oceanodroma jurcata). 

 L. 8. 7. Ads. Tail forked; bluish gray, wings 

 darker; a blackish space about eye. 



Range. — North Pacific; breeds in Aleutian Islands; recorded north 

 to Bering Strait; winters south to California. 



105.1. Kaeding Petrel {Oceanodroma kaedingi). 

 W. 6. Ads. Similar to O. leucorr/ioa, but much 

 smaller with much less deeply forked tail. (Anthony.) 



Range. — Pacific Ocean; (Socorro Islands, Lower California.) 



108. Ashy Petrel (Oceanodroma homochroa). L. 8. 5. 

 Ads. No white on rump; tail forked; sooty black 

 above, browner below; wing coverts grayish. 



Range. — "Coast of California; breeds on the Santa Barbara and 

 Farallone Islands." (A. O. U.) 



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