268 CALIFORNIA ACADEMY OF SCIENCES. 



58. Olor columbianus (Oid). 



Whistling Swan. — Mr. Anthony mentions a swan sliot at 

 San Eafael which he supposes to be this species. 



59. Guara alba (Linn.) 



White Ibis. — From the Cape region, noted only by Mr. 

 Belding. They were tolerably common at Magdalena Bay, 

 associated in small flocks and making long flights in line 

 from one feeding ground to another. At Santa Margarita 

 Island and along the estero they were usually seen roosting 

 upon the mangroves. A few immature plumaged birds 

 were seen. 



60. Plegadis guarauna (Linn.) 



White-faced Glossy Ibis. — A flock was seen at San Jose 

 del Cabo in April and May by Mr. Belding. 



61. Tantalus loculator Linn. 



Wood Ibis. — A pair was seen at San Jose del Cabo in 

 April and May, 1882, by Mr. Belding, and were more com- 

 mon at La Paz in winter. 



62. Botaurus lentie^inosus (Moutag.) 



American Bittern. — "Cape Saint Lucas, November 4; 

 San Jos(^ del Cabo, November 29, 30." (Ridgway in list of 

 Xantus's birds.) Mr. Belding mentions it as moderately 

 common in winter south of lat. "24P 30^ 



63. Ardea herodias Linn. 



Great Blue Heron.— Rare at Magdalena Bay . A single pale 

 specimen was taken on Santa Margarita Island. Mr. Belding 

 mentions it as rare at San Jose' del Cabo. 



64. Ardea e^retta Gmel. 



American Egret. — Tolerably common about Magdalena 

 Bay. Fed in small groups or singly along the beach. They 

 fly for a long distance from one feeding ground to another, 

 keeping but a short distance above the water. In April, 

 1888, they became more common in places along the estero 

 and were seen collected on the mangroves above the water. 



