lMKTj Oberholser, A New Agelaius. 333 



clove brown, the light and dark colors here being about equal in extent; 

 abdomen and crissum clove brown, all the feathers edged with white; 

 lining of wing sepia brown, the coverts with buffy and whitish edgings. 



This new form is much like Agelaius phamiceus pkoeniceus in 

 color, the male in this respect being practically indistinguishable, 

 and the female barely less blackish above and below; but in size 

 A. p. arctolegus is much greater, as the subjoined measurements 

 will show. It differs from Agelaius phamiceus neutralis in larger 

 size; in more blackish upper parts, broader and darker streaks 

 on the lower surface of the female; and paler buff on the shoulder 

 of the male. 



Breeding females from Fort Snelling, Minnesota, near Minneapo- 

 lis, are rather smaller and occasionally paler below, thus verging 

 toward Agelaius p. fort is; but males from the same locality show 

 little or no intergradation. A specimen from Fort Keogh, Mon- 

 tana, taken May 12, 1889, probably represents the summer form 

 of that locality, even though this individual may not have been 

 on its breeding ground. True Agelaius p. fortis has not been 

 detected east of the Mississippi River, and all records of this form 

 from the east belong probably under A . p. arctolegus. The ranges 

 of these two giant subspecies, in so far as indicated by the speci- 

 mens at present examined, are as follows: 



Agelaius phamiceus arctolegus. 



Alberta. — Slave River, 25 miles below Peace River; : Outlet of Atha- 

 baska Lake; ' Rocher River, 20 miles above mouth of Peace 

 River. 1 



Keewatin. — Painted Stone Portage, head of Echimamish River (north- 

 east of Norway House) ; ' Robinson Portage, Franklin River 

 (east of Painted Stone Portage). 1 



Mackenzie. — Fort Smith; 1 Fort Simpson; 1 Fort Resolution; 1 Big 

 Island, Great Slave Lake; l Fort Rae. 1 



Manitoba. — Red River Settlement. 1 



Saskatchewan. — St. Louis. 



Colorado. — Semper. 



Illinois. — Jacksonville; Bloomington. 



Michigan. — Isle Royale; ' Porcupine Mts., Ontonagon County. 1 



Minnesota. — Fort Snelling. 1 



Montana. — Fort Keogh. 



North Dakota. — Pembina. 1 



Texas. — Seguin. 



1 Breeding. 



