MYIODIOpXES PUSILLUS, GREEN BLACK-CAPPED WAEBLER. 79 



MYIODIOCTES PUSILLUS, (Wils.) Bp. ■> 

 Wilson's Green Black-capped Fly-catcliiiig Warbler. 



Muscicapa jmsilhi, Wils.. Am. Orn. iii, 1811, 103, pi. 26. f. 4. 



WUsonia pusilla, Bp., List, 1838, 23 — Alixn, Pr. Ess. lust. i v, 18B4, 64 (Ma.ssaclinsetts, May 

 and Aug., rare; "probably bretds").— Allkn', Bull. M. C. Z. iii, IfJ/i, 175 (Col- 

 orado, to above tiruber-line ; Utab ; Wyomiug). 



Siih-aiiia pusilla. Nurr., Mau. i, 2d uA. 1840, 335. 



Myiodioctcs jm^iUns. Bp., Conap. Av. i, 1850, 315.— Bd., B. N. A. ie."8, 293 (United States, 

 from Atlantic to Pacific; south to Guatemala).— SCL., P. Z. S. 1856, 291 (Cor- 

 dova) ; 1858, 299 (mountaius of Oaxaca, in winter) ; 1859, IVj:! (Xalapa). — SCL. 

 & Salv., Ibis, 1859, 11 (Guatemala).— Coop. & Suck., N. H. Wash. Ter. IKiO, 

 182 (Fort Steilacoom, abundant). — Wheat., Obio Agrio. Eup. I860.— Corns & 

 Prent., Smiths. Eop. for 1861 (1862), 409 (migratory).— Verk., Pr. Bost. Soo. 

 1832. 125 ; Pr. Ess. Inst, iii (Maine, summer visitant, uot common). — Bd., Rev. 

 18D4, 240 (various parts of British America, &e.). — Lord, Pr. Roy. Art'y Inst. 

 Wool, iv, 1864, 115 (British Columbia).— CoUE.s, Pr. Pbila. Acad. 18G6 (Arizona, 

 summer resident in mountains). — COUES, Pr. Ess. lust, v, 1838, 274 (New En- 

 gland, migratory, summer, and probably breeding). — Codes, Pr. Bost. Soc. N. 

 H. 1868, 111 (South Carolina, migratory). — Lawk., Ann. Lye. N. Y. viii, 1866, 

 285 (New York); is, 1868, 95 (Costa Rica).— TuuNB., B. E. Pa. 1869, 19 (mi- 

 gratorv). — Sumich., Mem. Bost. Soc. i, 1869, 547 (Vera Cruz, migratory, "every- 

 where'").— Stev., U. S. Geol. Surv. Ter. 1870, 464.— Mej!R., ibid. 1872, 675.— Daix 

 & Bann., Tr. Chic. Acad. 1, 1869, 278 (Alaska, breeding at Sitka).— Coop., Pr. 

 Cal. Acad. 1870, 75; B. Cal. 101.— Aike.n', Pr. Bost. Soc. 1872, 197 (Colorado).— 

 CouES, Kev, 1872, 109, fig. 50 (North America, at large). 



Mnioctonus pusiUnx". Cab., Mus. Hein. 1851, 18.— Cab., .J. f. O. 1860, 325 (Costa Rica). 



MotuciUa pileolata, Pall., Zoog. R.-A. i, 1811, 497. (Pacific variety.) 



Mijiodioctes p7i.sillus var. pileolata, Ridgw., Am. Journ. Sci. 1872, 457. (A variety.) 



Si/hia ii'ilsonii, Bp., Obs. Wils. 1826, No. 127.— Ndtt., Mau. i, 1832, 408. 



Miiscicapa wilsonii, AuD., Orn. Biog. ii, 1834, 148, pi. 124. 



Setophaga wilsonii, Jaed., ed. Wils. Am. Orn. 1832. 



Myiodioctes loilsonii, AuD., Syn. i, 1839, 50. — Acid., B. Am. ii, 1841, 21, pi. 75 (Labrador, 

 Newfoiiudlaud). — Putn., Pr. Ess. Inst, i, 1850, 203 (Massachusetts, summer, rare). 



Sylvania wilsonii, AVooDH., Sitgr. Jiep. 1853, 69 (Texas and Indian Territory). 



Hab. — Nor|-h America. Mexico. Central America. No West Indian record. 



Later Expeditions. — 60704-10, Fort Bridger and Henry's Fork ; 62347-8, Lower Geyser 

 Basin and T6ton Lakes. 



Brighter colored examples, from the humid Pacific regions, constitute Mr. Ridgway's 

 "var. pileolata" (Am. Journ. Sci. 1872, 457), to which the various Pacific coast refer- 

 ences, given above, pertain. 



Not obtained by either of the earlier Expeditions, but beyond a doubt overlooked. "■ 

 ■ The foregoing quotations illustrate very fully the distribution of the species. It doubt- ' 

 less breeds in New England, but I have no authentic advices that such is the case. I 

 have found no record of its wintering in the United States. 



Mr. Allen cominiuiicates the following interesting note: 

 ''The Black- capped W nvhler {Wilsonia imsilla) is acomtaon inhabitant 

 of the subalpiue and alpine districts in the Colorado Moantaius, breed- 

 ing from about 8,000 feet up to about timber-line. In the dwarfed wil- 

 lows and other low shrubs that grow for some distance above the limit 

 of trees, we found it by far the most numerous of all the iusectiTerous 

 birds. It was here more plentiful even than at lower points, and may 

 hence be regarded as an eminently alpine species. Although evidently 

 breeding, we failed to discover its nests. It manifests great anxiety 

 when its chosen haunts are invaded, and during our excursions at the 

 above-described locality, we were almost constantly scolded by one or 

 more pairs of these birds. Later in the season we met with this species 

 at Cheyenne, and near Colorado City and Denver, and also found it 

 common in the vicinity of Ogden, Utah, in September." 



I have met with the species in various parts of the East, where, how- 

 ever, it appears to be less abundant than it is in many western regions. 

 In the mountainous districts of Arizona it is a common summer resident 

 from May to September, and doubtless breeds, though I have no infor- 

 mation of its nest and e^jfized by Microsoft® 



