HIEUNDO HORREORUM, BARN SWALLOW. 85 



Eidgway, are noticeably different from those of the other species of 

 this genus, being a much clearer green, and more sparingly dotted with 

 mere points of very dark purplish-brown. A few specks are sprinkled over 

 the whole surface, but the tendency is to aggregate just at the larger end, 

 where the spots, though so numerous, preserve their distinctness. In 

 size and shape the eggs are not very different from those of P. rubra, 

 though perhaps averaging a little larger and especially thicker. The 

 nidification is essentially the same. 



Family HIRUNDINID JE : Swallows. 



HIRUNDO HORREORUM, Barton. 

 Americau Barn Swallow. 



a. erythrogaster. 



Eirundo eryfhrogasler, Bodd., P. E. 1783, pi. 724.— ScL., Cat. Am. Birds, 18G2, 39; 



P. "Z. 8. 1867, 340. 

 Hirundo rufa, Gm., Syst. Nat. i, 1788, 1018.— Bp., Cousp. i, 1850, 339 (in part). — Burm., 



Syst. Ueb. iii, 148. 

 Hirundo cijanopyrrlia, Vieill., Nouv. Diet. 1817, 510 ; Eucy. Meth. ii, 1823, 528. 



b. liorreorum. 



Hirundo rufa, Vieill., Ois. Am. Sept. i, 1807, 60, pi. 30.— Bp., Syn. 1828, 64 ; List, 1838> 

 9.— NUTT., Man. i, 1832, 601.— Woodh., Sitgr. Rep. 1853, 64.— Cass., 111. 1855, 

 243.— Cab., J. f. O. iv, 1856, 3 (Cuba).— Brew., N. A. O. i, 1857, 91, pi. 5, figs- 

 63-67.— Reinii., Ibis, iii, 1861, 5 (Greenland).— Guxdl., J. f. 0. 1861, 328 (Cuba). 



Hirundo liorreorum, Bart., Frag. N. II. Pa. 1799, 17.— Bd., B. N. A. 1858, 308; Rev. 1865, 

 294.— ScL. & Salv., Ibis, i, 1859, 13 (Guatemala).- Newt., Ibis, i, 1859, 63 

 (Santa Cruz, migratory). — Lawr., Ann. Lye. N. Y. 1861, 310 (Panama) ; 1864, 

 98 (Sombrero). — Sumich., Mem. Bost. Soc. i, 1869, 547 (Vera Crnz). — Guxdl., 

 OtV. 1869, 584 (St. Bartholomew).— Salv., P. Z. S. 1870, 184 (Veragua).— Hayd., 

 Rep. 1862, 161.— Coop. & Suck., N. H. Wash. Ter. 1860, 184.— Coues, Pr. Phila. 

 Acad. 1866, 72 (Arizona).— Coop., Am. Nat. iii, 1869, 33 (Montana).— Dall &, 

 Bann., Tr. Chic. Acad, i, 1869, 279 (Alaska).— Coop., B. Cal. i, 1870, 103.— 

 FiNSCn, Abh. Nat. iii, 1872, 28 (Alaska).— Merr., U. S. Gcol. Surv. Ter. 1872, 

 676. — Allen, Bull. M. C. Z. iii, 1872, 176 (Colorado, up to timber-line). — Coues, 

 Key, 1872, 113, fig. 54.— Snow, B. Kaus. 1873, 5 ; and of late United States writers. 



Hirundo americana, Wils., Am. Orn. v, 1812, 34, pi. 8, f. 1, 2.— Sw. & Rich., F. B. A. ii, 

 1831, 329.— Lemb., Aves Cubai, 1850, 44, pi. 7, f. 2. 



Hirundo ruxiica, AVD., Orn. Biog. ii, 1834, 413, pi. 173; Syn. 1839, 35; B. Am. i, 1840, 

 181, pi. 48.— GiRAUD, B. L. I. 1844, 35.— Jones, Nat. Berm. 34. 



Hal). — Var. liorreorum ; North and Middle America. North to Alaska. Greenland. 

 West Indies. H. erj/throf/astcr is the South American form. 



Lieutenant Tl'arren^s Expedition. — 520f)-8, Yellowstone River. 



Later ExpeditiouH. — 62295-6, Lower Geyser Basin, Wyoming. 



Not obtained by Captain Rayuolds' Expedition. 



In the above heading this species is retained under the name given in the Key, and 

 used by nearly all later Americau writers, although tlune is no probability that it is 

 specifically distinct from the South Americau form, H. eri/throtjaster. The synonymy is 

 distinguished above, for convenience, and (uir species may stand as //. erythrogaster var. 

 horrevruni, though even the varietal distinctions are very slight. 



The Barn Swallow occurs throughout the Missouri region, especinlly 

 during the migrations, and breeds in suitable localities, jilthough it is 

 much less numerous than it is in most wooded and settled parts of tlu» 

 country. It appears to withdVaw altogether liom the United states in 

 winter, though a few Swallows are usually among the earliest arrivals^ 

 in south(>rn portions, even in February. Their great jtowers of ilight 

 enable them to pass rai)idly from one country to another, according to 

 the exigencies of the weather. -''^ 



There is uo occasion hero to enter into details of the well-known nidi- 



