CIECUS. 43 



smaller bird, and, in the adult dress, of a bluish-grey colour above. The body is 

 slender, the wings and tail long. The legs are long and the tarsi slight. The middle 

 toe is considerably longer than the others, the inner toe being longer than the outer. 



1. Circus hudsonius. 



The Ring-tailed Hawh, Edw. Birds, iii, t. 107 '. 



The Marsh Hawk, Edw. Glean. Nat. Hist. ii. t. 291. f. 2\ 



Falco hudsonius, Linn. Syst. Nat. i. p. 128 \ 



Circus hudsonius, Vieill. Ois. Am. Sept. t, 9'; Scl. P. Z. S. 1857, p. 211 '; 1859, p. 390°; 1864, 



p. 178"; Scl. & Salv. Ibis, 1859, p. 220°; P. Z. S. 1864, p, 349"; Lawr. Ann. Lye. N. Y, 



vii. p. 317"; ix. p. 134"; Diigt;s, La Nat. i. p. 138 '^ v. Frantz. J. f. Orn. 1869, p. 370"; 



Salv. P. Z. S. 1870, p. 216"; Cat. Strickl. Coll. p. 483'°; Sharpe, Cat. Birds Brit. Mus. 



i. p. 55"; Gundl. Orn. Cub. p. 45"; Sumichrast, La Nat. v. p. 235''; Boucard, P. Z. S. 



1883, p. 456"; Eerrari-Perez, Pr. U.S.Nat. Mus. ix. p. 166'°; Herrera, La Nat. (2) i. 



pp. 176, 320"; Cherrie, Auk, 1892, p. 328 '^ Eisher, Bull. U.S. Dep. Agr. no. 3, p. 26, 



t. 3 "; Bendire, Life Hist. N. Am. Birds, i. p. 183 '" ; Richmond, Pr. U. S. Nat. Mus. xvi. 



p. 521^'; Allen, Bull. U. S. Nat. Mus. v. p. 34'=; Jouy, Pr. U. S. Nat. Mus. xvi. 



p. 787 ". 

 Circus cyaneus, var. hudsonius, Ridgw. in Baird, Brew., & Ridgw. N. Am. Birds, iii. p. 214 ''; 



Lavcr. Mem. Bost. Soc. N. H. ii. p. 298'° ; Bull. U. S. Nat.- Mus. no. 4, p. 43'°. 



Supra cserulescenti-cinereus, uropygio albo : subtus alb us, pectore griseo, abdomine toto maculis sparsis sagitti- 

 formibus rufis notato ; tibiis aut albis atit plus minusve rufo fasciatis ; remigibus nigrioantibus, subtus ad 

 basin albis ; teotrioibus et axillaribus vix griseo fasciatis ; cauda cinerea, nigrioante subterminata, fasciisque 

 sex incomplefcis transnotata : rostro corneo,.pedibus flavis. Long, tota circa 19'0, alee 13'5, caudae 9'0, 

 tarsi 3-0. (Descr. maris ex Chapuloo, Puebla, Mexico. Mus. nostr.) 



<3 juv. 5 similis, sed minor et subtus pallidior. 



$ brunnea, uropygio albo ; pileo, cervice postico, scapularibus et tectricibus alarum minoribus fulvo notatis ; 

 superciliis et macula infra oculos cervino-albis, faciei disco fusco et fulvo intermixto : subtus fulva, 

 pectore fusco striato ; remigibus subtus albidis, cervino tinctis fusco transfasciatis ; subalaribus cervinis, 

 fusco maculatis ; cauda fusca, rectricibus mediis fasciis pallidis notatis, rectricibus reliquis fasciis latis 

 fulvis et fulvo terminatis : rostro eorneo, pedibus flavis. Long, tota circa 20'0, alte 15-0, caudae 10-0, 

 tarsi 3'3. (Descr. feminae ex Dueiias, Guatemala. Mus. nostr.) 



5 jiw. Subtus omnino fusco striata. 



Hab. N. Ameeica generally ^s. — Mkxico {T. Mann^^, Sumichrast '^^), Eancheria de 

 los Apaches (Bobinette^^), Hermosillo in Sonora (Ferrari-Perez), Carichic in 

 Chihuahua ( W. Lloyd), Mazatlan [Grayson ^% Soledad in San Luis Potosi {Jouy ^''), 

 Zacatecas {W. £. Eichardson), Valley of Mexico {Whits'^, Eerrera^^), Chapulco, 

 Puebla 20, San Baltazar, La Noria, Coapam {Ferrari-Perez), Guanajuato {Duges^^), 

 Santana near Zapotlan ( TT. Lloyd), Volcan de Colima {W. £. Eichardson), Orizaba 

 {Botteri s), Jalapa {de Oca), Oaxaca {Boucard ^), Cacoprieto, Tehuantepec city ^o 

 {Sumichrast), Izalam in Yucatan {G. F. Gaumer'^% Progreso {Bevis) ; Guatemala 

 {Constancia ^% Duenas «, Quezaltenangd, San Geronimo {0.S.& F. B. G.), Atitlan^ 

 Panajachel {W. B. Eichardson); Nicaeagua, Rio Escondido (Eichmond^^); 

 Costarica, San Jose {Carmiol^\ Cherrie^^), Candelaria Mts. {v. Frantzius^^) ; 



6* 



