. Review of American birds in the Museum of the Smithsonian Instution. [microform]. Birds; Oiseaux. 'mh'tj PETROCHELIDON. 289 (lulness of tho frontal band. There is no appreciable difference in the sexes?. A specimen in Mr. Lawrence's collection, from Panama, I cannot , except in being sm,Her. Length, ; wing, ; tail, The forehead is nearly white, as usual in lunifrons.* Summer specimens from the souther". Rocky Mts. (Los Pines, N. M.) and Carlisle are considerably smaller than those from Fort Bridger. Specimens in the collection from throughout the whole United
. Review of American birds in the Museum of the Smithsonian Instution. [microform]. Birds; Oiseaux. 'mh'tj PETROCHELIDON. 289 (lulness of tho frontal band. There is no appreciable difference in the sexes?. A specimen in Mr. Lawrence's collection, from Panama, I cannot , except in being sm,Her. Length, ; wing, ; tail, The forehead is nearly white, as usual in lunifrons.* Summer specimens from the souther". Rocky Mts. (Los Pines, N. M.) and Carlisle are considerably smaller than those from Fort Bridger. Specimens in the collection from throughout the whole United States to northern border, as alsoâ ' Petrochelidon . fHirumlo americann, Gmbun, S. N. I, 1788, 10i7 (from Baffon, VI, 65^8, La Plata).âPetrochelidon americann, Cab. Mus. Hein. 1850-1, 47. fHirundo pyrrhonota, Vieill. Encycl, Meth. II, 524 (Azara, Apuiit. II, 511, no. 305, Paraguay).â Cuiyle p. Buum. Reiae La Plata, II, 1861, 477 (Tucuman). Hah. Brazil ? Paraguay f - In Mr. Lawrence's collection is an immature bird (No. 148, from Brazil), much like corresponding stages of P. lunifrons, but differing in considerably smaller bill, and in the lower tail coverts being much shorter (falling three- quarters of an inch short of the tip). The rufous of the rump extends further up the back, and there is a decided wash of reddish over the bre&at and belly, sides and crissum, leaving only the abdominal region pure white. The frontal band is not fully developed, but seems as if it might be whitish ; there is a blackish spot on the lower throat, and a few whitish feathers in the chin. The chestnut of the throat is lighter than in lunifrons, or of about the same shade as that of rump. I think there is no doubt of its being quite distinct from luiiifroui or swaimoni, but in its still immature condition cannot venture to identify it. There are two names to which it might be referred, the //. ameri- cana, of GmelinâP. americann. Cab. M. Hein. I, 47â(based on Ilirondelle a cmtplon roii
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbirds, bookyear1872
