498 BULLETIN 5 0, UNITED STATES NATIONAL MUSEUM 



Haliaetus aibicilla subspecies a. hypoleucusi Gurnet, List Diurn. Birds Prey 

 1884, 58. 



Haliaeetus hypoleucus Strjneger, U. S. Nat. Mus. Bull. 29, 1885, 213 (Bering 

 Island; crit.). 



Haliaetus hypoleucus Reichenow and Schalow, Journ. fiir Orn., 1885, 457 (re- 

 print of original description). — Gurney, Cat. Birds Prey, 1894, 23. — Shahpe, 

 Hand-list, i, 1899, 267. 



Thrasaetus harpyia (not Vultur harpy ia Linnaeus) Lowe, Auk, xxxiv, 1917, 454, 

 (Pueblo County, Colo.; see Lincoln, Auk, xxxv, 1918, 78, 79). 



Subfamily Circinae: Harriers 



Circinae Bonaparte, Rev. Mag. Zool., 1850, 491. — Ridgway, Proc. Acad. Nat. 



Sci. Philadelphia, 1870, 141. — Sclater and Salvin, Nom. Av. Neotr., 



1873, 118.— CoTJES, Key North Amer. Birds, ed. 5, 1903, 651.— Peters, 



Check-list Birds of World, i, 1931, 264. 

 Circeae Ridgway, Proc. Boston Soc.Nat. Hist., 1873, 55. 

 Asturinae limbo fasciali instructae Sundevall, Ofv. Svenska. Vet.-Akad. Forh., 



1872, 22. 



Coracoids not overlapping at sternum; nasal septum not completely 

 ossified; upper portion of anterior face of tarsometatarsus with no 

 bony ring; outer (fourth) toe not reversible; claws graduated in size 

 from that of the hallux (largest) to that of the outer (fourth) toe 

 (smallest), not contracted to their under surface; deep plantar tendons 

 of type III; tendons of biceps not split; tensores patagii not peculiar; 

 cervical vertebrae L3-14; caeca minute; palate desmognathous; 

 sides of head densely feathered except around the eyes, which are 

 overhung by a bare superciliary plate of the lachrymal, and have a 

 bare space beneath the lower lid; lores sparsely feathered; sides of 

 head with a postauricular transverse line of short, stiff, differently 

 formed feathers (as in Striges) forming an incomplete ruff; orifice 

 of the ear about as large as eye, and in some cases, at least, with a 

 decided conch; bristlelilie feathers of lores very long and slender, their 

 tips extending much above the upper outline of the cere, and strongly 

 recurved; bill rather weak, not toothed or notched; legs long, the 

 tarsus approximately equaling tibia in length (as in Accipitrinae; 

 wings and tail long. 



Genus CIRCUS Lacepede 



Circus Lacepede, Tableau Ois., 1799, 4. (Type, as designated by Lesson, 1828, 



Falco aeruginosus Linnaeus.) 

 Pygargus Koch, Syst. Baier. Zool., 1816, xxxii, 127. (Type, by monotypy, P. 



dispar I^och = Falco cyaneus Linnaeus.) 

 Strigiceps Bonaparte, Geogr. and Comp. List., 1838, 5. (Type, as designated 



by Gray, 1840, Falco pygargus Linnaeus, here = i^. cyaneus Linnaeus. Name 



first published as a nomen nudum, in Gior. Arcadico, xlix", 1831, 36.) 

 Glaucopierix Kaup, Classif. Saugcth. und Vogel, 1844, 113. (Type, by monotypy, 



Falco cineraceus Temminck = /^. pygargus Linnaeus.) 

 Glaucopteryx (emendation) Kaup, Classif. Stiugeth. und Vogel, 1844, 113; Mus. 



Senckenb., iii, 1845, 258. 



