BIRDS OF LOWER CALIFORNIA. 275 



Belding and Anthony; the former found the species also at 

 Santa Rosalia Bay. On the ocean side of Santa Margarita 

 Island they were common March, 1889. They are birds of 

 sand beaches rather than of mud Hats. 



100. JEgialitis wilsonia (Ord). 



Wilson's Plover. — Mr. Belding gives this bird as very 

 common, in his list from the Cape region. 



101. JEgialitis montana (Towns.) 



Mountain Plover. — Observations upon this species from 

 Lower California were furnished me by Mr. Anthony who 

 met with a large flock on the open plains above San Telmo 

 (altitude 800 ft.), in the winter of 1888-89. Mr. Belding has 

 often met with them in winter at Tia Juana. 



102. Arenaria interpres (Liun.) 



Turnstone. — No turnstones have yet been reported from the 

 Cape region. Mr. Anthony took this species in April at San 

 Ysidro, and says it is not uncommon on all rocky beaches. I 

 found small flocks on Magdalena Island in February and 

 March, 1888, and Santa Margarita Island March 6, 1889. 



103. Arenaria melanocephala (Vig.) 



Black Turnstone. — Mr. Anthony saw black turnstones 

 on San Martin Island in April. The only ones that I have 

 found were mingled witli a flock of A. interiyres and Cliara- 

 drius squatarola at Santa Margarita Island, March, 1889. 

 This being probably the soathermost limit from which 

 specimens have been obtained. 



104. Haematopus frazari Brewst. 



Frazar's Oyster-catcher. — k: single specimen was taken 

 on Los Coronados Islands, May 17, 1881, by Mr. Belding, 

 who also saw it at San Quintin Bay, Cerros Island and La 

 Paz. Has been seen on the coast in winter and summer 

 north of lat. 30° by Mr. Anthony. 



I found this oyster-catcher tolerably common at Mag- 

 dalena Bay and northward, and on Santa Margarita Island. 



