214 NORTH AMERICAN BIRDS. 



Tail and socondnrios witli a siibterminal band of dusky ; lower parts 

 with rufous markings. 



Wing, 12.1)0-10.00; tail, 9.00 - 10.50 ; culmcn, .05-. Tf); tarsus, 

 2.'M - :i.'2'> ; middle! too, 1.20-1.55. Lower parts with seal lured 

 irregular speeks, or small cordate .opots, ol' reddish-rufous. Ilab. 



North an<l Middle America var. h iidxo n ius . 



Wing, 12.40 - 14.50 ; tail, 8.50 - 10.50 ; culmen, .02 - .81 ; tarsus, 

 2.42-3.00; middle toe, 1.20-1.50. Lower parts with numerous 

 regular transverse bars of reddish-rufous. Ilab. South America. 



var. cinereus.* 



Circus cyaneus, var. hudsonius (Linn.). 



MAB8H HAWK; AUEBICAN WAHB TBR, 



Falco hudsonius, Li\x. Syst. Xat. p. 12S, 17()«. — G.meu Syst. Xat. p. 277, 1789. —Lath. 



Syn. I, 91, sp. 70, 1781 ; Gm. Hist. I, p. 97, sp. C. 1821. — Uaid. Tr. Orn. II, 173, 



1800. — Shaw, Zoiil. VII, 10.^ 1809. C'ircun hwlsmiiiw, Vikim.. Ois. Am. Sept. pi. 



ix, 1807. — Ca.ss. is. (.'ul. & Tex. p. 108, 18.';4 ; Minis N. Am. Isr.S, p. 38. — IIekum. 



P. R, K. Rcp't, II, 33, ISir.. — KKNNEiiLY, V. 1{. K. Itcp't, III, 19, 18.^)6. — New b. 



P. U. I?. licp't, VI, 74, 1857. -Coor. & Suck. P. K. I{. K„p't, XII, ii, 150, 18(iO.— 



SriiiCKl,. Orn. Syn. I, 150, 1855. — CouE.s Prod. B. Ariz. 13, ISfiti. — Hlakist. Ibis, 



1861, 319. — Loiil), Pr. R. A. I. IV, 1864, 110 (Brit. Coll.). Circus qjancus hmlsonius, 



ScilLEc. Mus. Pays-Hns, Circi, 2, 18G2. Cimis ci/nncus, viir. hudsonius, (Kidgway) 



CouEs, Key, 1872, 210. — Ciiay, Hand List, I, 37, 1869. Strirjiccps hudsonius, Bonai'. 



Cousp. Av. p. 35, 1850. Fulm spndicois, Gmel. Syst. Nat. p. 273, 1789. — FoitsT. 



Phil. Trans. LXll, 383, 1772. Falm bufoni, O.mel." Syst. Nat. p. 277, 17S9. — Lath. 



Gen. Hist. I, 98, D, 1821. Fulco nliijinosus, Gmei,. Syst. Nat. p. 278, 1789. — Lath. 



Ind. Orn. p. 40, 179 ; Syn. I, 90, 1781 ; Gen. Hist. I, 271, 1821. — DAri>. Tr. Orn. 



II, 173, 1800. — WiLs. Am. Orn. pi. li, f. 2, 1808. —Sail Apj). Frankl. Exp. p. 671. 



Circus uliginosus, Vieii.l. Ois. Am. .Sept. I, 37, 1807. — DeKay, Zoiil. N. V. II, 20, 



pi. iii, figs. 5, 6, 1841. —.Tames. (Wii.s.) Am. Oni. I, 88, 1831. —Max. Cab. ,Umr\i. 



VI, 1858, 20. i>lritiicq>s uliginosus, IloxAi'. Kur. & N. Am. B. p. 5, 1838. — KAfi', 



Monog. Fale. Cent. Orn. 1850, p. 58. Fa!co cyaneus & jj. Lath. Ind. Oiu. p. 40, 1790 '; 



Syn. 1, 91, 7sp. 6 A. — Shaw, Zoiil. VII, 164, 1809. Fako ci/mtcus, Ari). B. Am. pi.' 



ccelvi, 1831. —.Tames. (Wii.s.) Am. Orn. IV, 21, 1831. — Boxai'. Am. Orn. pi. 12 ; 



Ann. Lye. N. Y. II, 33 ; Isis, 1832, p. 1538. — Peab. B. Mass. p. 82, 1841. Circus 



ci/ancus, Bonap. Ann. Lye. N. Y. p. 33. - .Iaud. (Wils.) Am. Orn. II, 391. — Rich. 



Mcasurc/ncnts. ~ J. Wing, 12.50-13.25; tail, 9.00-9.30; culmen, .60-. 70; tar.sus, 2.75- 

 2.90 ; middle toe, 1.10-1.25. Specimens, 8. ?. Wing, 13..50- 15.00 ; tail, 9.50-10.70 ; cul- 

 men, .75 ; tarsus, 2.70-2.85 ; middle toe, 1.25-1.35. Specimens, 4. 



Obscrvalinns. — T\\ii adult female of c,!/rtjic)« is distinguishable from t\\nt o( hudsonius by lighter 

 eoloi's and less distinct ochraceoiis blotches on the shoulders. 



1 Circm ci/aneus, var. cinereus (VlEll.l,.l Circus cincrcus, VlEII.1,. Nouv. Diet. H. N. IV, 

 1816, 454. — Darwin, Zoiil. Beag. pt. iii, 30. — D'Oiin. Synop. Av. Mag. Zool. 1837. — Sti!Ickl! 

 Orn. Syn. I, 156. — Giiay, Hand List, I, 37, No. 368. Circus cnrnpcs/ris, Vieii.l. Knc. Meth. 

 Ill, 1823, 1213. Circus frenntus, Licht. Verz. Doubl. 1823, p. 62. Circus histrionicus, QuoY, 

 Zoiil. .lourn. Ill, 1826, 271. 



Specimens examined. — National Museum, 7 ; Philadelphia Academy, 5 ; Boston Society, 3 ; 

 Jluseuin Cambridge, 1 ; Cab. G. N. Lawrence, 1. Total, 17. ' 



Measurements. — $. Wing, 12.40-13.25 ; tail, 8.50-9.00 ; culmen, .62-. 63 ; t.irsu.s, 2.42- 

 2.60; middle toe, 1.20-1.25. Specimens, 11. ?. Wing, 13.75-14.50; tail, 9.30-10.50; 

 culmen, .75-. 80 ; tarsus, 2.80-3.00 ; middle toe, 1.40-1.50. Specimens, 5. 



