218 U. S. r. R. R. EXP. AND SXIKVETS — ZOOLOGY — GENERAL REPORT. 



TUEDUS (PLANESTICUSi) MIGEATORIUS, Linn. 



Robin. 



Tuidus niigra/oHiis, LiNNAtus, Syst. Nat. I, 17C6, 292.— Forster, Pliilos. Trans. LXII, 1772, 382.— Vieillot, Ois. 

 Am. Sept. II, 1807, 5; pi. Ix, l.xi.— Wilson, Am. Dm. I, 1808, 35 -, pi. ii.— DonGiixy, Cab. 

 Nat. Hist. I, 1830, 133 ; pi. xii.— Brehm, Handbuch Vbg. Deutsch. 1831, 388, (European 

 spec.)— AuDnBON,Orn. Biog. II, 1834, 190 ; pi. 131 —Ib. Birds Amer. Ill, 1841, 14 ; pi. 142 — 

 Bonaparte, Conspectus, 1850, 272. — Newberry, Zool. Cal. and Or. Route, 81 ; Rep. P. R. 

 R. Surv. VI, 1857. 



Merula migratoria, Sw. &. Rich, Fauna Bor. Amer. II, 1831, 176. 



Planeslicus viigralorius , Bonaparte. (?) 



Turdus canadensis, Brisson, Orn. II, 1760,225. 



Sp. On. — Third and fourth quills about equal ; fifth a little shorter ; second longer than si.xth. Tail slightly rounded. Above 

 olive gray ; top and sides of the head black. Chin and throat white, streaked with black. Eyelids, and a spot above the eyo 

 anteriorly, white. Under parts and inside of the wings, chestnut brown. The under tail coverts and anal region, with tibiae 

 white, showing the plumbeous inner portions of the feathers. Wings dark brown, the feathers all edged more or less with pale 

 ash. Tail still darker, the extreme feathers tipped with white. Bill yellow, dusky along the ridge and at the tip. Length, 

 9 75 ; wing, 5.43 ; tail, 4.75 ; tarsus, 1.25. 



Ilab. — Continent of North America to Mexico. 



It is very seldom that specimens exhibit the colors exactly as described. Nearly always in 

 winter, and in most cases at other times, the rufous feathers are margined with whitish, some- 

 times quite obscuring the color. The black feathers of the head, too, have brownish edgings. 

 The white spot above the eye sometimes extends forwards towards the nostrils, but is usually 

 quite restricted. The white patches on the two eyelids are separated from each other, anteriorly 

 and posteriorly. 



Tlie young bird differs in having the back with transverse blackish bars, the underparta 

 thickly marked with black in transversely elongated blackish spots. The chin and throat are 

 white, with a maxillary brown streak only. The shafts of the lesser coverts are streaked with 

 brownish yellow, and the back feathers with white. 



Sometimes, especially in winter specimens, the olive gray of the back is much glossed with 

 yellowish brown. The shade of rufous beneath varies from light cinnamon to dark chestnut. 



I have never seen any approach in any of the many west coast specimens before me to the 

 Turdus rufojmlliatus of Lafresnaye, said to have been collected at Monterey, California, and 

 Buspect that this locality is erroneou.s, as many of those given for the collections of the " "Voyage 

 de la Venus" certainly are. It probably was really taken at Acapulco or elsewhere, on the 

 southern Mexican coast. 



■ PlaruaiUv,s, Bonaparte, Comptes Rcndus, 1854, Notes Orn. Uclattrc, 27. According to Gr.iy «jnonymou8 with CkUofsis, 

 CabaniB, 18.5(1. (.') 



