80 CALIFORNIA ACADEMY OF SCIENCES. 



mens which I have examined, from "Mount Lassen, Cal.," 

 " Genoa, Utah," and " Paget Sound;" are undoubtedly re- 

 ferable to S. m. anahelce. These, Mr. Eidgway writes 

 me, are the only ones in the National Museum collection 

 that match my specimens from Lower California. During 

 our stay of two weeks on the San Pedro Mountain, both S. 

 mexicana and S. m. aiiabelw were everywhere common; the 

 latter, however, greatly outnumbering the specific form, and 

 in a great measure flocking by itself. At a distance of one 

 hundred yards it was quite easy to identify the two forms; 

 and I do not think that either Mr. Townsend or myself were 

 guilty of shooting a male bird the identity of which we were 

 not sure of beforehand; the greater amount of blue in the 

 plumage of the adult male giving it an appearance much 

 darker than that presented by typical S. mexicana. Most 

 of the S. m. anaheloe were paired and preparing to nest by 

 May 1st; but I think S. mexicana were not yet nesting; they 

 appeared to be birds that were still moving northward, and 

 it is possible that later we would have found them all gone. 

 It is my opinion that S. m. anahelce will prove to be a south- 

 ern form of S. mexicana, wandering occasionally as far north 

 as Puget Sound. A recent trip into the mountains of the 

 eastern part of San Diego County, Cal., failed to bring to 

 light any other than the typical form of S. mexicana. 



The following tables of measurements will show the rela- 

 tive size of the two forms, and a slight though constant 

 variation will be noticed in favor of the San Pedro birds, 

 which are slightly larger than any S. mexicana which. I have 

 examined : 



