302 REVIEW OF AMERICAN BIRDS. [PART I. 
Smith-|Collec- Sex w 
sonian| tor’s | and Locality. Coll 
No. No. | Age. © 
34,026? os aS Mazatlan. Bete GolkiGrayson, ’ 4) 7 iseeees 
35,049 | 393 J San Jose, Guat. Jan. 1863. O. Salvin. Salvin & Godman. 
135 dg Panama R. R. 5c Cab. Lawrence. M’Lean. & Galb, 
hen 
ected. Received from Collected by 
(34,0262) Albino, (35,049.) Type of Petrochelidon littorea. (155.) Type of species. 
Hirundo albiventris. 
Hirundo albiventris, Bopp. 1782 (Burr. Pl. enl. 546, 2, Cayenne).—Petro- 
chelidon alb. Scuater, Catal. 1861, 41, no. 247. 
Hirundo leucoptera, Go. 8. N. II, 1788, 1022 (based on Pl. enl, as above). 
—Cas. Schomb. Guiana, III, 672.— Petrochelidon leuc. Cas. Mus. 
Hein. I, 48.—Cotyle /euc. Burm. Uebers. III, 1856, 143 (Brazil).— 
In. Reise La Plata, I, 1861, 478 (Banda Oriental). 
Bill very large; tail much emarginated. Above glossy metallic greenish- 
blue on the head, more bluish-green on the back. Rump white (but not tail 
coverts, which are like the back) all round, as also entire under parts, in- 
cluding inside of wings. Outer edges of the inner secondaries, and inner 
great coverts, most of inner webs of lateral tail feathers and basal portion 
of feathers of whole back, hind neck, and forehead also white. No trace of an 
interrupted pectoral collar, except concealed basal gray across the breast, 
darkest in a median spot. Only occasional and almost inappreciable dusky 
shaft streaks. Feathers of chin and throat entirely white, those of the crissum 
with the extreme root only plumbeous. 
Young birds appear to have more white on the wings. 
(No. 35,056.) Total length, 5.40; wing, 4.20; tail, 2.25; fork, .34; difference 
between quills, 2.10; length of bill from forehead, .50, from nostril, .27, along 
gape, .68; width of gape, .50; tarsus, .44; middle toe and claw, .60, claw 
alone, .19; hind toe and claw, .36, claw alone, .19. 
P. meyent' (leucopyga, Meyen, nec Licht.) I have not seen, though 
it is said to be closely allied, but to differ in a steel blue back, a 
grayish band across the breast, and the absence of white edges to 
the wing feathers, thus probably more like lewcorrhoa, but without 
the white loral line, and with a decided grayish pectoral band. 
1 Hirundo meyeni (leucopyga). 
Hirundo leucopyga, Mrven, Nova acta Ac. L. C. XVI, II, 1834, suppl. 
73, pl. x (Chile). —Cotyle leu. Burm. Uebers. III, 1856, 144, — 
Hirundo leucopygia, Gouup, Birds Beagle, 1841, 40 (Valparaiso and 
Tierra del Fuego). 
Petrochelidon meyeni, Cas. Mus. Hein. I, 1850, 48.—Scuarer, Catal. 
1861, 40, no. 246.—Cassin, Catal. Hir. 1853. 
Hab. Coast of Chile and Patagonia. 
Norse.—If leucopyga, as used by Lichtenstein for . leucorrhoa, be merely a 
museum name, as appears probable, it should stand for the present species. 
——— 
P 
; 
