654 U.S. NATIONAL MUSEUM BULLETIN 221 



to doubt the validity of the form he had intended to name from the autumn- 

 taken birds. 



Despite the author's reservations, he was nevertheless to publish the name 

 in October 1872, accompanied by a diagnosis established wholly upon the 

 autumn birds collected in 1864 and to which he had tentatively given the 

 name arizonae as early as 1865. 



In other words, the cotypes of arizonae must be found among Nos. 37145- 

 37170, some of which, wearing a striated immature plumage not mentioned 

 in the description, need not be seriously considered. The 7 listed above are 

 the only ones still in Washington; on the labels of four of them, Richmond 

 has written "Cotype!," but at no time could he decide which one had more 

 claim to typeship than another and therefore never selected any one of them 

 as the type. Of the 19 not listed above, some have disappeared from the 

 collection without trace, while others were sent long ago to various institu- 

 tions and collectors. . , 

 Spizella socialis mexicana Nelson ' 

 Auk 16 (1) : 30, January 1899. 

 =Spizella passerina mexicana Nelson. See Hellmayr, Catalogue of birds 



of the Americas 11 : 558, 1938. 

 143975. Adult male. San Cristobal Las Casas, State of Chiapas, Mexico. 

 Sept. 24, 1895. Collected by Edward W. Nelson and Edward A. Gold- 

 man. Original number 3116. Received from the U.S. Fish and Wildlife 

 Service. 

 Emberiza Shattuckii Audubon 



Birds of America 7: 347, pi. 493. 

 =Spizella pallida (Swainson). See Hellmayr, Catalogue of birds of the 



Americas 11:559, 1938. 

 1937. Adult (sex not indicated). "The country bordering the Upper 

 Missouri"=vicinity of Fort Union (near the confluence of the Yellow- 

 stone River with the Missouri), Williams or McKenzie County, North 

 Dakota. 1843. Received from Spencer F. Baird (of whose private 

 collection it once formed part), who acquired it from John J. Audubon. 

 Spizella Breweri Cassin 



Proc. Acad. Nat. Sci. Philadelphia 8 (1) : 40 (not earlier than Feb. 26), 

 1856. 

 =Spizella breweri breweri Cassin. See Hellmayr, Catalogue of birds of 



the Americas 11: 561, 1938. 

 1905. Adult female. "Rocky Mts."=Big Sandy Creek (at about lat. 

 42°00' N., long. 109°30' W.) , Sweetwater County, Wyoming. June 15, 

 1834. Collected by John K. Townsend. Received from Spencer F. 

 Baird (of whose private collection it once formed part), who acquired 

 it from John J. Audubon, who, in turn, obtained it from John K. Town- 

 send. 

 2890. Adult male. Same data as No. 1905. 



