98. Black-capped Petrel (£strelata 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.) 
£03. Least Petrel (Halocyptena microsoma). 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 furcata). 
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. leucorrhoa, but much 
smaller with much less deeply forked tail. (Anthony.) 
Range.—Pactific 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.) 
65 
Petrels. 
