OCEANODROMA HOMOCHROA. 



therefore in less worn plumage, which may account for the greater amount of hoary- 

 white on the greater wing-coverts. 



The specimen from San Miguel Island in the Henshaw Collection is in faded 

 plumage, and is of a more chocolate-hrown throughout. 



The descriptions of the male and female are taken from a pair of birds received 

 by Mr. C. K. Worthen from Point Reyes, California, in our own collection. The 

 specimen figured is the one from San Miguel Island, also in our collection, and now 

 in the British Museum. 



31 



