276 CALIFORNIA ACADEMY OF SCIENCES. 



They were mated in January. They were rather shy, run- 

 ning rapidly on the beach, and if approached, taking wing 

 with loud, clear, whistling notes, and after flying some 

 distance, alighting again at the water's edge. Their food 

 was chiefly small bivalves found in the gravelly beach. Two 

 birds were obtained, of one fragments only were saved. 



105. Hgematopus bachmani Aud. 



Black Oyster-catcher. — A few were seen on Los Coro- 

 nados Islands by Mr. Belding, also at San Quintin Bay and 

 La Paz. Mr. Anthony has found them more common on the 

 northwest coast than the preceding species. 



106. Oreortyx pictus plumiferus (Gould). 



Plumed Partridge. — ' ' Not at present a bird of Cape St. 

 Lucas." (Belding). This is one of the species collected at 

 the Cape region by Mr. Xantus. I neither heard nor saw this 

 partridge in Lower California. Mr. Anthony has collected 

 Oreortyx on San Pedro Martir which he describes as a new 

 subspecies. Mr. Belding found them common between 

 Campo (San Diego county) and Hansen's; a male which he 

 shot near Campo, was identified by Mr. Eidgway as 0. p. 

 IDlumiferus. Mr. Belding says he doubts if it was ever 

 collected in the Cape region. 



107. Oreortyx pictus confinis Anthony. 



San Pedro Partridge. — Kanges from an altitude of 1,000 

 feet in winter to the pines on the top of San Pedro Martir, 

 nesting from 2,500 to 9,000 feet altitude. 



108. Callipepla californica vallicola Eidgw. 



Valley Partridge. — According to Mr. Belding they are 

 common at the Cape region. At Pichalinque Bay he shot 

 a young bird as early as January 25, and found it moder- 

 ately common at San Quintin. Mr. Anthony has met with 

 large flocks on San Pedro Martir at an altitude of 8,200 feet. 

 At the times of my travels in the peninsula, the birds were 

 mated, and hence fewer were seen. At Calmalli a nest 



