86 TACHTCiNETA BICOLOE— T. THALASSINA. 



fication and eggs of our Swallows. I will indicate the general character. 

 In Hirundo and Fetrochslidon the eggs are alike spotted, heavily and 

 sharply, upon a white ground, with various reddish-brown and darker 

 brown shades. In Tachycineta bicolor and tlialassina, in Gotyle and Stel- 

 gidopteryx, and in Progne purpurea, the eggs are pure white, unmarked. 



TACHYCINETA BICOLOR, (VieiU.) Cab. 



WMte-bellled Swallow. 



Eirundo hicolm; VrEOX., Ois. Am. Sept. i, 1807, 61, pi. 31.— Bp., Syn. 1828, 65.— AuD., 

 Orn. Biog. i, 1831, 491; v, 417; pi. 98; Syn. 1839, 35; B. Am. i, 1840, 175, pi. 

 46.— NuTT., Man. 1, 1832, p. — .— Gikaud, B. L. 1. 1844, 36.— Lemb., Avea CubsB, 

 1850, 46.— WOODH., Sitgr. Eep. 1853, 65.— Cass., 111. 1855,-244.— Newb., P. K. R. 

 Kep. vi, 1857, 78.— Brew., X. A. 0. i, 1857, 100, pi. 4 (egg).— Bd., B. N. A. 1858, 

 310 ; Eev. 1865, 297.— Coop. & StiCK., N. H. Wash. Ter. 1860, 185.— Jones, Nat. 

 Berm. 34.— Lord, Pr. Roy. Arty. Inst, iv, 1864, 15 (British Columbia).— Dall & 

 Bann., Tr. Chic. Acad, j, 1869, 279 (Alaska).— Coop., B. Cal. i, 1870, 106.— 

 FiNSOH, Abh. Nat. iii, 1872, 29 (Alaska).— Coues, Pr. Phila. Acad. 1871, 21 

 (North Carolina, in January).— Allen, Bull. M. C. Z. iii, 1872, 176 (up to tlm- 

 ber-line).— Trippe, Pr. Bost. Soc. xv, 1872, 235 (Iowa).— Hakt., Br. Birds, 1372, 

 125 (accidental in England).— Snow, B. Kans. 1873, 5 ; and of most writers. 



Chclidon Ucolor, Less. — Bp., List, 1838, 8. 



Tachycineta Ucolor, Cab., Mus. Hein., 1850, 48 ; J. f. 0. iv, 1856, 5 (Cuba).— Gundl., J. f. 

 0. 1861, 330 (Cuba).— SOMICH., Mem. Bost. Soc. i, 1869, 547 (plateau of Mexico).- 

 Allen, Bull. M. C. Z. ii, 1871, 269 (Florida, in winter).— CouES, Key, 1872, 113. 



JJerse bicolor, Bp. Consp. Av. i, 1850, 341. 



Petrochelidon Ucolor, ScL., P. Z. S. 1857, 201 ; 1859, 364 (Xalapa) ; Cat. 1862, 40.— ScL. &, 

 S.iLv:, Ibis, i, 1859, 13 (Guatemala). 



Hirundo viridis, Wils., Am. Om. v, 1812, 49, pi. 38. 



" Cfuilidmi viridis, Boie, 1826." (Bp.) 



Hirundo leucogaster, Stbph., Shaw's Gen. Zool, x, 1817, 105. 



Chelidon leiicoga^tra, Boie, Isis, 1844, 171. 



, Hab. — Temperate North America. North to Great Slave Lake and Alaska. Mexico, / . ,' 'i 

 .in summer. South to Guatemala. Cuba. Bermudas. Accidental in Englaud ( froHc^, .ii//- 

 Zoolog;ist, 1858, 3806; Newton, iUd. I860,' 7145 ; P. Z. S. 1860, 131). Breeds in most of ' -; 

 its United States range. Winters in Florida, Cuba, and Central America. ' 



Not noticed by the Expeditions. //•J 



The White-bellied Swallow appears to be rarer in the Missouri region 

 than the other species are, or than it is in most other parts of the United 

 States, much of the country being not well suited to its wants. It is oc- 

 casionally seen in the Southern States in midwinter, as in the instances 

 above given. 



TACHYCESTETA TSALASSHfA, (Sw.) Cab. 

 Tiolet-green Swallow. 



Hirundo thalassina, Sw., Phil. Mag. i, 1827, 365.— Bp., List, 1838, 9.— AuD., Orn. Biog. 



iv, 1838, "97, pi. 385 ; Syn. 1839, 36"; B. Am. i, 1840, 186, pi. 49.— Woodh., Sitgr. 



Eep. 1853, 64.— Cass., B. Cal. and Tex. i, 1855, 245.— Brew., N. A. 061. i, 1857, 



ia2 (not the fig. !).— Newb., P. E. E. Eep. vi, 1857, 78.— Bd., B. N. A. 1858, 311 ; 



Eev. 1865, 299.— Maxim., J. f. 0, 1858, 101.— Heerm., P. E. E. Eep. x, 1859, 36.— 



Coop. & Suck., N. H. Wash. Ter. 1859, 185.— Lord, Pr. Eov. Arty. Inst. Wool. 



iv, 1864, 115 (British Columbia).— CouES, Pr. Phila. Acad. 1866, 72 (Arizona).— 



Coop., Pr. Cal. Acad. 1870, 75 ; B. Cal. ii, 1871, 107.— Allen, Bull. M. C. Z. iii, 



1872, 149 (Colorado, up to 8,000 feet). 

 " Cecropis thalassina. Less." 

 Chelidon thalassina, Boie, Isis, 1844, 171. 

 Herse thalassina, Bp., Consp. Av. i, 1850, 341. 

 Tachycineta thalassina. Cab., Mus. Hein. 1850. 48. — Sujiich., Mem. Bost. Soc. i, 1869, 547 



(Vera Cruz, abundant, breeds). — Mbkr., U. S. Geol. Surv. Ter. 1872, 676. — 



CouES, Key, 1^72, 113. 

 PetroclwmmtmassUm^^Sc^^l^^^^^^^ Cat. 1881, 39.- 



