302 



REVIEW OP AMERICAN BIRDS. 



[part I. 



(34,026?) Albino. (35,049.) TjfeolPetrochelidanlittorea. (135.) Type of species. 



Hirundo alliiTentris. 



Hirundo albiventris, Bodd. 1782 (Bdff. PI. e;>il. 546, 2, Cayenne). — Petro- 



chelidon alb. Sclatee, Catal. 1861, 41, no. 247. 

 Hirundo leucopiera, Gtm. S. N. II, 1788, 1022 (based on PI. enl. as above). 



— Cab. Sohomb. Guiana, III, 672. — Petrochelidon hue. Cab. Mus. 



Hein. I, 4S.— Cotyle hue. Bdkm. Uebers. Ill, 1856, 143 (Brazil).— 



Ib. Reise La Plata, II, 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. meyeni^ (leucopyga, Meyen, nee LicM.) 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 leucorrhoa, but without 

 the white loral line, and with a decided grayish pectoral band. 



' Hirundo meyeni (leucopyga). 



Hirundo hucopyga, Meyen, Nova acta Ac. L. C. XVI, II, 1834, suppl. 

 73, pi. X (Chile). — Co(^/e hu. Bukm. Uebers. Ill, 1856, 144.— 

 Hirundo hucopygia, Gould, Birds Beagle, 1841, 40 (Valparaiso and 

 Tierra del Fuego). 

 Petrochelidon meyeni, Cab. Mus. Hein. I, 1850, 48.— Sclatee, Catal. 

 1861, 40, no. 246.— Cassin, Catal. Hir. 1853. 

 Hah. Coast of Chile and Patagonia. 



Note.— If leucopyga, as used by Liohtenstein for H. leucorrhoa, be merely a 

 museum name, as appears probable, it should stand for the present species. 



