238 CALIFORNIA ACADEMY OF SCIENCES. 



Mr. Xantus neglected to report some very common, well- 

 known residents, since they do not appear in his list." 



Mr. L. Belding has done the most extensive work, having 

 in 1882, made observations, limited often to a few hours or 

 days at the most, at Cerros Island (April 14-26), Santa Ro- 

 salia Bay (April 28), San Quintin Bay (May 2-11), Los 

 Coronados Islands (May 16 and 17), on the western coast of 

 Lower California. At La Paz (December 15, 1881, to March 

 21, 1882, and three days spent at Cape St. Lucas in March, 

 1882), San Jose del Cabo (April 1, 1882, to May 17) ; later. La 

 Paz was revisited (December 15, 1882), and explorations 

 made in the Victoria and San Francisco Mountains and the 

 vicinity of La Paz northward to about lat. 24P 30'', all on 

 the Gulf side of the peninsula, and to a point about thirty 

 miles north of Todos Santos on the Pacific coast. In the 

 northern territory he has traveled from Tia Juana to Han- 

 sen's in May, 1884, and from San Diego to San Rafael and 

 the northern base of San Pedro Martir in May, 1885, cov- 

 ering a region just north of that embraced by Mr. A. W. 

 Anthony, who has sent me a list of the species observed by 

 him at various times between San Fernando and El Rosario 

 in the south to Ensenada in the north, and from Cape Col- 

 nett on the coast (lat. 31^ N.) to an altitude of 11,000 feet 

 on the mountain San Pedro Martir. 



Mr. M. Abbott Frazar collected, in 1887 and 1888, on the 

 Gulf coast from La Paz southward, and in the mountains 

 back from the Gulf shore, and touched Loreto, and I believe 

 Muleje. Only the new forms which he obtained have thus 

 far been published, consequently some species not neces- 

 sarily new are almost certain to be added to this list when 

 the results of his energetic field work are known. 



Under the auspices of this Society an opportunity was 

 afforded the writer to visit the peninsula during the first 

 four months of 1888. Previous to this time his studies of 

 the avi-fauna of Lower California had been confined to Cer- 

 ros and Guadalupe Islands. Through the courtesy of Mr. J. 



