191 



this species along the northern border of Dakota, in the neighborhood 

 of the head waters of the Souris River. For a very interesting article 

 in this connection the reader is referred to the "American Naturalist," 

 vol. vii, Nov., 1873, p. G95. 



I am also informed by letter from Mr. H. W. Henshaw, the natural- 

 ist of the government exploring expedition in New Mexico and Ari- 

 zona, in charge of Lieutenant George M. Wheeler, U. S. Engineer 

 Corps, that he has collected about thirty specimens during the course 

 of their summer's explorations, in southeastern Arizona and western 

 New Mexico. This species cannot, therefore, be longer considered 

 one of the rare birds of North America. 



71. COTURNICULUS PASSERINUS, var. PEHPALLIDUS Ridg- 

 way. See Coues' Key, p. 137. 



79. JUNCO HYEMALIS, var. AIKENI Ridgway. See Am. Nat., 

 vol. vii, No. 10, p. 615; Oct., 1873. 



84. POOSPIZA BELLII, var. NEVADENSIS Ridgway. 



CH. Like P. Bellii, but much larger and all the colors paler ; purer 

 ashy above, with very distinct streaks on the back. Wing, 3-20 (in- 

 stead of 2-50) ; tail, 3*20 (instead of 2-50) ; culmen, -35 ; tarsus, -76. 



Hab. Entire area of the Middle Province of the U. S. ; cast to 

 Green River, Wyoming; northward resident to-beyond the parallel of 

 40. 



87. SPIZELLA PALLIDA. The possibility of S. pallida Swain, 

 and S. Breweri Cass. being regional modifications of the same species 

 is reuueied very doubtful by two facts, viz. : (1), that they have been 

 taken together at the same locality, and (2) that intermediate speci- 

 mens have not been seen. Mr. Allen collected numerous typical ex- 

 amples of both forms at Cheyenne, yet his collections did not contain 

 a single specimen which could not be referred immediately to one or 

 the other. S. pallida replaces 8. Breweri in Lower California, thus 

 having a somewhat remarkable range, exactly paralleled, however, by 

 that of Zonotrichia leucophrys, which is abundant at the cape to the 

 exclusion of var. gambelii. 



91. PASSERELLA ILIACA (L.), var. SCHISTACEABaird. Though 

 no specimens intermediate between iliaca and schistacea have yet been 

 found, Dr. Cooper has recently (Nov., 1872) collected, at Saticoy, 

 California, a specimen which combines about equally the characters 

 of iliaca and Townsendii. The latter grades into schistacea through 

 Fort Tejon specimens. 



98. For a synopsis of the genus Cardinalis, see Am. Nat., vol. vii, 

 No. 10, p. 618; Oct., 1873. 



