144 MNTOTILTID.^. 



SIUEUS. 



Seiurus, Swainson^ Zool. Joum. iii. p. 171 (1827). (Type Motacilla aurocapilla, Linn). 

 Enicocichla (rectius Henicocichla) , Gray, List Gen. B. p. 31 (1841). 



This genus has much in common with Bendrceca, differing chiefly in the style of the- 

 coloration of its members, their habits and actions. The rictal bristles are short, 

 the wings long and pointed, and the tail nearly even, its undercoverts being fully 

 developed. 



Three species constitute the genus, all well-known birds; in addition to these a large 

 race has recently been described from the Black Hills, Wyoming, as Siurus ncevius 

 notahilis *. The others are regular migrants, spending their winters in Mexico, Central 

 America, the Antilles, and the northern parts of South America, and their summers in 

 North America, where they breed. 



A. Vertex fusGO-aurantiacus, supercilia alba nulla. 



1. Siurus auricapillus. 



Motacilla aurocapilla, Linn. Syst. Nat. i. p. 334 \ 



Seiurus aurocapillus, Sw. Phil. Mag. new ser. i. p. 369''; Lawr. Ann. Lye. N. Y. ix. pp. 94', 200*> 



Baird, Kev. Am. B. i. p. 214'; Sumichrast, Mem. Bost. Soc. N. H. i. p. 547"; Frantz. J. 



f. Orn. 1869, p. 293 ' ; Baird, Brew. & Ridgw. N. Am. B. i. p. 280 " ; Gundl. Orn. Cub. 



p. 68°; Lawr. Mem. Bost. Soc. N. H. ii. p. 269"; BuU. U.S. Nat. Mus. no. 4, p. 14". 

 Siurus auricapillus, Scl. & Salv. Ibis, 1859, p. 9"; Moore, P. Z. S. 1859, p. 55"; Coues, BuU. 



Nutt. Orn. Club, ii. p. 31 » ; B. Col. Vail. i. p. 297 "- 

 Henicocichla aurocapilla, Scl. P.Z.S. 1856, p. 293'"; Cab. J. f. Orn. 1861, p. 84'?; Lawr. Ann. 



Lye. N. Y. viii. p. 180 '«; Scl. & Salv. P. Z. S. 1870, p. 836 "; Salv. P. Z. S. 1870, p. 183'". 

 Turdus auricapillus, Licht. Preis-Verz. max. Vogel, p. 2 (cf. J. f. Orn. 1863, p. 5721). 



Supra olivaceus, alis et cauda concoloribus, pileo fusco-aurantiaco nigro circumcinoto; subtus albus, pectore toto 

 et bypochondriis nigro guttatis, stria rictali nigra ; octilorum ambitu albido ; rostri maxiUa cornea, mandi- 

 bula albicante ; pedibus carneis. Long, tota 5-1, alae 2-9, caudss 2-1, rostri a rictu 0-6, tarsi 0-8. ' (Descr, 

 maris ex Choctum, Guatemala. Mus. nostr.) ' ^ 



$ mari omnino similis. 



Hob. NoETH America, eastwards of the Eocky Mountains, Alaska^ i^.— Mexico {Beppe 20, 

 Salle 15), Mazatlan {Grayson 1°), Tableland] {Bullock 2), Orizaba &c. {Sumichrast ^ % 

 Guichicovi, Tehuantepec {Sumichrast ^^), Merida, Yucatan {Schott^); Guatemala, 

 Escuintla, Savana Grande, Duenas ^^, Tactic, Coban, Choctum {0. S. & F. B. G.) ; 

 HoNDOEAS, Omoa {Lei/land i^), San Pedro {G. M. Whitely^^); Nicaeagua, Greytown 

 {Holland ^^) ; Costa Rica, San Jose {v. Frantzius''),Barranc{i{CarmioP); Panama,. 

 Volcan de Chiriqui {Arce 2°),— Beemuda ^ ; Antilles ^ ^. 



* Eidgway, Proo. U.S. Nat. Mus. 1880, p. 12. 



