MYIODIOCTES PUSILLUS, GREEN BLACK-CAPPED WAEELER. 79 



MYIOUIOCTES PUSILLUS, (Wils.) Bp. 



Wilson's Green Black-eappeil FIy-«UcIiing- Warbler, 



Muscicapa pimlla, Wils.. Am. Oru. iii, 1811, 103, pi. 2G. f. 4. 



JVilsouia pufiiUa, Bp., List, 1838, 23 — Allen, Pr. Ess. Inst. iv, 1864, 64 (Massachusetts, May 

 aud Aug., rare; "probably breeds"). — Allkx, Ball. M. C. Z. iii, 1872, 175 (Col- 

 orado, to above tiuiber-liue ; Utah ; Wjoiuiug). 



Siilvania pusilla. Nutt., Mau. i, 2d ed. 1840, 335. 



Mylodioctcs pusiUxs, Bp., Cousp. Av. i, 1850, 315.— Bn., B. N. A. 18.58, 293 (United States, 

 from Atlantic to Pacific; south to Guatemala). — Scl., P. Z. S. 18.56, 291 (Cor- 

 dova); 1858, 299 (monutaius of Oaxaca, in winter); 18,59, 363 (Xalapa). — SCL. 

 & Salv., Ibis, 1859, 11 (Guatemala).— Coop. & Suck., N. H. Wash. Ter. 1860, 

 182 (Fort Steilacoom, abundant). — Wheat., Ohio Agric. Rep. 1860. — Coues & 

 Prext., Smiths. Rep. for 1861 (1862), 409 (migratory).— Veuh., Pr. Bust. Soc. 

 1862, 125 ; Pr. Ess. Inst, iii (Maine, sunniier visitant, not common). — Bd., Rev. 

 1864, 240 (various parts of British America, tfcc). — Lohd, Pr. Roy. Art'y Inst. 

 Wool, iv, 1864, 115 (British Columbia).— CouES. Pr. Phila. Acad. 1866 (Arizona, 

 summer resident in mountains). — CouES, Pr. Ess. Inst, v, 1868, 274 (New En- 

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

 H. 1868, 111 (South Carolina, migratory).- Lawi;., Ann. Lye. N. Y. viii, 1866, 

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

 gratorv). — Sumicil, Mem. Bost. Soc. i, 1839, 547 (Vera Cruz, migratorv, "every- 

 where'").— Stev., U. S. Geol. Surv. Ter. 1870, 464.— Meiui., ibid. 1872, 675.— Dall 

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

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

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



Mnioctonus pusilhts, Cab., Mus. Heiu. 1851, 18. — Cab., J. f. O."l860, 325 (Costa Rica). 



AlotdciUa pUcolata, Pall., Zong. R.-A. i, IHU, 497. (Pacific variety.) 



Ali/iodiocf('>s 2»''^i^^iis var. pUcolata, Ridgvv'., Am. Jouru. Sci. 1872, 457. (A variety.) 



S>iMa wihouVu Bp., Obs. Wils. 1826, No. 127.— Nutt., Mau. i, 1832, 408. 



Muitcicapa tcilsonii, Aui>., Oru. Biog. ii, 1834, 148, pi. 124. 



Si'tophaaa mUonii, Jard., ed. Wils. Am. Orn. 1832. 



AJijiodtoctfs witfionii, Aud., Syn. i, 1839, 50. — Aud., B. Am. ii, 1841, 21, pi. 75 (Labrador, 

 Newfoundland). — PuTX., Pr. Ess. Inst, i, 1856, 208 (Massachusetts, summer, rare). 



Stflvania wihionii, Woodil, Sitgr. Rep. 1853, 69 (Texas aud Indian Territory). 



Hab. — North Anun-ica. Mexico. Central America. No West Indian record. 



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

 Basin and T(^ton Lakes. 



Brighter cohjn-d examples, from the humid Pacific legions, constitute Mr. Ridgway's 

 "var. j>(7fe/a/«" (Am. Journ. Sci. 1872, 457), to which the various Pacific coast refer- 

 ences, given ab()V(!, pertain. 



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

 The foregoing ([notations 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 conimniiicates the f'ollowiug interesting note: 



''The Black-capped Warbler ( Wilnonia pusiUa) is a common inhabitant 

 of the subalpiiie and al[)ine districts in the Colorado Mountains, breed- 

 ing from about 8,()()0 feet n[) to about timber-line. In the dwarfed wil- 

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

 of trees, we found it by fitr the most numerous of all the insectiverous 

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

 hence l)e regarded as an eminently alpine sj[)ecies. Although evidently 

 breeding, we lailed to discover its nests. It manitests great an.xiety 

 when its chosen haunts are invaded, and during our e.xcursions 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 speci«'s 

 at Cheyenne, and near Colorado (.lity and Denver, and also found it 

 common in the vicinity of Ogden, Utah, in Septend)er." 



1 have met with the species in various i)arts of thi^ I'^ast, 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 I\Iay to Sei)tember, and doubtless breeds, though 1 have no infor- 

 mation of its nest and eggs. 



