298 REVIEW OF AMERICAN BIRDS. [PART I. 
Ool. I, 1857, 100, pl. iv, fig. 47 (eggs).—LremBryz, Aves de Cuba, 
1850, 46, lam. vii, fig. 2.—Barrp, Birds N. Am. 1858, 310.—Lorp, 
Pr. R. A. Inst. Woolwich, IV 1864, 15 (Br. Columbia ; nesting).— 
Jones, Bermudas, 34 (Sept. 22, 1849).—Cooper & Suckuey, P. R. 
R. Rep. XII, 1, 184.—Petrochelidon bicolor, Scuater, P. Z. S. 1857, 
201.—In. 1859, 364 (Xalapa).—Is. Catal. 1861, 40.—Scrater & 
Satvin, Ibis, 1859, 13 (Guatemala).—Tachycineta bicolor, Cas. 
Mus. Hein. 1850, 48; Jour. Orn. 1856, 4 (Cuba).—Gunp.acu, Jour. 
Orn. 1861, 330 (common in Cuba). 
Hirundo viridis, Wits. Am. Orn. V, 1812, pl. 38. 
Hirundo leucogaster, SrEPHENS, Shaw, Gen. Zool. X, 1817, 105. 
Hab. Whole United States, and north to Slave Lake, south to Guatemala; 
Bermudas; Cuba, common in winter. In summer on table-lands of Mexico. 
I find no essential difference in coloration in a large series from 
different parts of North America, Mexico, and Guatemala. <A skin 
from Fort Rae is larger than the rest, measuring—wing, 4.90; tail, 
2.65. Carlisle specimens measure 4.75 and 2.50, respectively. In 
a single specimen in the museum of the Philadelphia Academy of 
Natural Sciences, from California, the back and rump have a steel 
blue gloss, rather than green—seen to less extent in some Smith; 
sonian skins from the West Coast—while others exhibit nothing of 
the kind, and I cannot think that there is any good reason for sup- 
posing that there may be a western species as distinguished from 
an eastern. Western and Mexican skins have perhaps a rather 
smaller bill, and the feathers of the tarsus appear to extend farther ~ 
along the inner side. 
The occurrence of this species in the high region between Orizaba 
and City of Mexico, in June, as recorded below, is a fact of great 
interest. 
Specimens from the whole United States from east to west, and 
north to boundary ; also— 
Smith-|Collec-} Sex fwiltent 
sonian} tor’s | and Locality. Gollected Received from Collected by 
No. No. | Age. | ‘ 
20,640 | .. | Q | Moose Factory, H.B.| May 26,’60.| C. Drexler. | ...... 
32,342 an Ae se a3 J; MiKenzie:) ss) ||| 2" Seeeeee 
27,299 | 1,298 | .. | Big Island, S. Lake. send J; Reed: +! "ssh eee 
31,225 ie a “ tes Hg Ale AR ce ee 
23,134 ae .. | Fort Simpson. vee iB. R. Roks.0 7) oi Se eee 
27,300 | 1,331 2 Fort Youkon. June, RiKen nicott. 15 csi bh ckeceeee 
4,663 ate od | Matamoras, Mex. a5 Lt. Couch. Dr. Berlandier. 
29,203 3G .. | Ovizaba, Mex. lsh Prof) Sumichrast.| ~~ 222528 , 
30,711 386 | .. | Vera Paz, Guat. O. Salvin. Salvin & Godm. 
35,134 185 | .. | Pine region above June, 1864. Dri Sarborinsy ©) °°) eee 
35,135 195 | .» “‘( Mirador, Mex. asthe 
