704 
CIRCUS. 
Circus campestris , C. Acoli Vieillot, Encycl. méth. 1212. 1213. 
Falco Acoli Shaw, Gener. Zool. VII. 172. Tb. 23. — Daudin, Traité Ornith. 
II. 176. 
Falco frenatus Illiger, Mus. berol. 
Falco Jiistrionicus QuoY et Gaimard, Voy. Uranie Oiseaux 94. Tb. 15. 16. 
Circus Jiistrionicus^ C Acoli Lesson, Traité Ornith. 85. — Kaup, Oken's Isis 
1847. 97. 98. 
Circus (Strigiceps) Acoli Kaup, Wiegm. Archiv 1850. XVI. 32. 
Strigiceps Jiistrionicus Bonaparte, Conspectus Avium I. 35. 
Strigiceps cinereus Gray, Handlist Birds I. 37. 
Gavilan del campo par do Azara, Apuntam. I. 145. 151. 
Acoli. — Nuhlina J, Barril J. 
cyaneus Beckstein, Ornith. Taschb. 25. — Macgillivray, Brit. Birds III. 366. 
Falco cyaneus, F. pygargus Linne, Syst. Natur. I. 126. {Europa, 
Falco torquatus Brisson, Ornith. I. 345. 
Falco pygargus Naumann, Naturg. Vögel Deutschlds. 1. 391. Tf. 38. 39. 
Falco albanella Stor. Uccell. II. Tb. 55. 
Buteo cyaneus Jennyns, Brit. vert. anim. 89. 
Soubouce BuFFON, PI. enlum. 443. 480. 
Falco boJiemicus, F. albicans, F. griseus, F, montanus^ F. uliginosus? Gmelin, 
Syst. Natur. 1. 276 seq. 
Falco cinereus, F. rubiginosus Poseg. 
Falco strigiceps Nilsson, Ornith. suec. I. 21. 
Falco gallinarius Daudin, Traité Ornith. II. 185. — Savigny, Descr. de 
l'Egypte XXm. 264. 
Accipiter variabilis Pallas, Zoogr. ross. as. I. 364. 
Pygargus dispar Koch, Syst. baier. Zool. 
Circus (Strigiceps) cyaneus Kaup, Wiegm. Archiv 1850. XVI. 32. 
Strigiceps cyaneus Bonaparte, Conspectus Avium I. 35. 
Strigiceps cinereus, Str. nigripennis Str. pallens Brehm, Naumannia 1855. 
V. 269. 
KornweiJie. — Harrier. — HenJiarrier. — Ringtail. — KutujacJilyt. 
cyaneus hudsonius Schlegel, Mus. Pays-Bas Circi 2. = Circus Jiudsonius Vieill. 
dalmatinus Rüppell, Mus. Senkenbg. II. 177. = Circus Swainsoni Smith. 
europogistus autor. = Circus uropogistus Vieill. 
Gouldi Bonaparte, Conspectus Avium I. 39. — Circus assimilis Jard. 
hiemalis Cuvier, Règne anim. I. 338. — Buteo lineatus Vieill. 
histrionicus Kaup, Oken's Isis 1847. 98. = Circus cinereus Vieill. 
hiidsonius Vieillot, Oiseaux Amér. sept. Tb. 9. — Baird, Birds N. America 
38. {America sept. Cuba. 
Falco Jiudsonius Linne, Syst. Natur. I. 128. 
Falco uliginosus, F. variegatus^ F. Buffoni, F, albidus Gmelin, Syst. Natur. 
L 278. 
Falco europogistus Daudin, Traité Ornith. II. 160. 
Falco uliginosus Wilson, Amer. Ornith. VI. 67. Tb. 51. Fig. 2 juv. 
Falco cyaneus Audubon, Ornith. Biogr. IV. 396. 
Circus variegatus, C. uropogistus Vieillot, Ois. Amer. sept. Tb. 9. 
Circus cyaneus var. americana Swainson, Fauna bor. amer. Tb. 29. 
Circus (Strigiceps) uliginosus Kaup, Wiegm. Archiv 1850. XVT. 33. 
Strigiceps Jiudsonius Bonaparte, Conspectus Avium I. 35. 
Circus cyaneus Jiudsonius Schlegel, Mus. Pays-Bas Circi 2. 
TJie Harrier. TJie MarsJi HawJc. 
Jardinei Gould, Birds Australia I. Tb. 27. = Circus assimilis Jard. 
Lalandei Smith, S. Afr. Quart. Journ. V. 338. = Circus maurus Kaup. 
leucocephalus Vieillot, Encycl. méth. 1216. — Buteo nigricollis Vieili- 
leucophrys Vieillot, Encycl. méth. 1215. = Circus macropterus Vjeill. 
Levaillanti Smith. — Circus ranivorus Vieill. 
