BIRDS OF LOWJER CALIFORNIA. 251 



10. Brachyramphus craveri (Salvad.) 



Craveei's Murrelet. — From Cape St. Lucas by Mr. 

 Xantus. Also given from Natividad Island, which is on 

 the west coast near lat. 28^ N. 



11. Larus occidentalis And. 



Western Gull. — Tolerably common at Magdalena Bay 

 in winter, and northward along the western coast. Said to 

 breed upon the Todos Santos Islands off Ensenada, and also 

 upon the Island of San Pedro Martir (Goss). Noted from 

 the Cape region also. 



12. Larus argentatus smithsonianus Couos. 



American Herring Gull. — Kecorded by myself from 

 Cerros Island. 



13. Larus californicus Lawr. 



California Gull. — Said by Mr. Belding to be moderately 

 common at San Jose del Cabo. I obtained immature birds 

 at Magdalena Bay in the winter. 



14. Larus delawarensis Ord. 



Ring-billed Gull. — Recorded from the Cape region by 

 Mr. Belding, and from San Quintin Bay by Mr, Anthon}^ 

 in winter. 



15. Larus heermanni Cass. 



Heermann's Gull. — The most common species of Laridce 

 met with at Magdalena Bay, nearly all being -in immature 

 plumage. They attend in large numbers the flocks of 

 pelicans and cormorants when fishing. They occur com- 

 monly along both coasts, breeding on the islands. 



16. Larus Philadelphia (Ord). 



Bonaparte's Gull. — Observed only by Mr. Belding from 

 the Cape region. 



17. Sterna maxima Bodd. 



Royal Tern. — Reported from Cape region by early 

 observers and from northwest coast in winter, by Mr. 

 Anthony. Mr. Belding found it common at Cerros Island 

 in April, rare in May. 



