CHARACTERS OF MYIODIOCTES PUSILLUS 327 



vii. 1873, e03.—Merr. U. S. Geol. Surv. Terr, for 1872, 1873, 675, 113.— Coop. Am. Nat. 



viii. 1874, \6.—Coues, BNW. 1874, 79, 232.— B. B. <£: R. NAB. i. 1874, 317, pi. 16, f. 3, 4.— 



Tarr. <& Hensh. Eep. Orn. Specs. 1874, 10.— Hensh. ibid. 42, IQZ.—Hensh. List B. Ariz. 



1875, \bG.— Nelson, Pr. Bost. Soc. xvii. 1875, 343, ZSl.—Brew. ibid. iiO.— Hensh. Zool. 



Expl. W. 100 Merid. 1876, ^Qt.— Gentry, Life-Hist. i. 1876, 167.-ilfino«, B. N. Engl. 



1877, 129. 

 Myildioctes pnsillus, Scl. PZS. 1858, 299 (Parada). 

 Motacilla pileolata, Pall. ZKA. i. 1831, 497. 

 MyiodiOCtes pusillUS var. pileoIatUS, Ridgw. Am. Joum. Sci. 1872, i^l.—Ridgw. Am. Nat. 



vii. 1873, 608.— Cottes, Am. Nat. vii. 1873, 417.— B. B. & R. NAB. i. 1874, 319. 

 Sylvia Wilsonii, £p. Journ. Phila. Acad. iv. 1824, 179.— iJp. Ann. Lye. N. Y. ii. 1826, 86.— 



Nutt. Man. i. 1832, 438.— Towns. Journ. Phila. Acad. viii. 1839, 153. 

 Setophaga wilsonii, Jard. "ed. Wils. 1832 ".-Cafeot, Naum. ii. Heft iiL 1852, 60.— ZTot/, 



Pr. Phila. Acad. vi. 18.53, -im.-Hoy, Smiths. Eep. for 1864, 1865, 437. 

 Musclcapa wilsonii, Aud. OB. ii. 1834, 148, pi. 124.— Pea&. Rep. Orn. Mass. 1839, 297. 

 MyiodiOCtes wilsonii, Aud. Syn. 1839, 50.— Awd. BA. ii. 1841, 21, pi. 75.— Patn. Pr. Ess. Inst. 



i. 1856, 206.— TFi7h"s, Smiths. Eep. for 1858, 1859, 282. 

 Sylvania wilsonii, Vfoodh. Sitgr. Eep. Zuui E. 1853, 69. 



Abrornis atricapilla !, Blyth., Ibis, 1870, 169, from " China " (see Finsch, PZS. Dec. 7, 1875). 

 Sylvia petasodes, f Licht. " Preis-Verz. 1830 " (others quote /S. petesoda). 

 Green Black-capt Warbler, Nutt. 1. c. 



Wilson's Green Black-capped Flycatching Warbler, Coues, 1. c. 1874. 

 Green Black-capped Flycatcher, or Flycatcbing Warbler, Wilson's Flycatching War- 

 bler, Authors. 



Hab. — The whole of North America, Mexico, and Ceutral America, iu suit- 

 able localities. No West Indian record. Breeds probably from the latitude 

 of Massachusetts northward, and in the higher mountains of the West as far 

 south at least as Colorado, if not farther. Winters extralimital. 



Var. pileolatus from the moist Paciiic slopes, and quotations of " pusillus " 

 from this region are referable to it. Bonaparte first noticed the brighter 

 coloration of the western race (Compt. Rend. 1854, — ). 



Ch. sp. — $ Olivaceus, infra JIavus ; f route siiperciliisque cum 

 lateribus capitis JlaviSy pileo nitente-atro ; 2 pileo dor so concolore. 



i , adult: Upper parts, including exposed edgings of the wings and tail, 

 bright yellowish-olive ; under parts, including front aud sides of the head 

 and superciliary line, rich yellow, somewhat shaded with olive. A squarish, 

 glossy blue-black patch on the crown. Wings and tail plain fuscous, with 

 greenish edgings, unmarked with other color. Upper mandible dark; 

 under mandible and feet pale. Length, 4| ; extent, 7 ; wing, 2-2J : tail, 2. 



9 , and young : Exactly like the male, except in lacking the black cap, the 

 crown being colored like the back. 



There is very little variation in this species, according to age or season, 

 though the adult summer birds are the more richly colored. Western speci- 

 mens are frequently of a brighter yellow, almost orange, on the fore parts 

 below and on the head, constituting var. pileolatus. This latter is not con- 

 fined to the Pacific coast region ; the brightest specimen before me, in the 

 large series examined, among which are Mr. Ridgway's types oi pileolatus, 

 being from New Mexico. My Arizona specimens are precisely like Pennsyl- 

 vania ones. 



SO far as my knowledge of the record enables me to say, this 

 pretty bird was discovered iu the extreme northwestern 

 corner of America by the celebrated traveller and naturalist 

 Pallas, whose description was printed in the "Zoographia" in 



