Mr. C. Buckley, agrees with the latter; but a specimen from "Bolivia" in the Sclater 

 collection is of the H. patagoitica type, with the basal under tail-coverts white. D'Orbigny 

 met with it in the province of Moxos. 



From the Upper Amazons we have not seen many specimens, and young birds were 

 procured by Mr. E. Bartlett on the Ucayali River, as well as at Nauta, Chyavetas, and 

 Yurimaguas. Mr. Bartlett states that it does not breed on the Upper Amazon. 



In Brazil it is apparently widely distributed, and the birds all have entirely black 

 under tail-coverts. We have seen both young and old birds from this country, so that the 

 species probably breeds there. Mr. Graham met with it at Para ; and in his notes from 

 Pernambuco the late Mr. W. A. Forbes writes : — " I did not bring home any specimens of 

 this Swallow, the only one I shot having been too much damaged to skin ; I have, how- 

 ever, little doubt that this is the species I met with, as I continually saw it in numbers, 

 and was able to examine it often through my field-glasses. It was very abundant at 

 Cabo, and might be seen there sitting in numbers, particularly in the morning, on the 

 telegraph-wires of the railway opposite Mr. Hood's house; I also saw it at Parahyba 

 and Garanhuns, perched on the roofs and eaves of the churches, and therefore not to be 

 shot at with impunity. In Recife, on the other hand, I never saw it at all, though 

 H. leucorrhoa abounded there." 



Natterer met with the species at Rio de Janeiro in August and September, and at 

 Ypanema in June, July, and December. He says that it frequents houses, and nests 

 under the eaves, affecting buildings in towns as well as isolated houses in the country. 

 It stays at Ypanema throughout the year, but was not seen in Cuyaba. Dr. Lund 

 found it in Minas Geraes, and procured a young specimen at Lagoa Santa on the 12th 

 of January, which was beginning to put on its full plumage. 



Prince Xeuwied writes : — " This dainty Swallow I have only encountered in the 

 southern parts of Brazil. In Rio de Janeiro it is particularly common, and frequently 

 nests in the buildings. It also flies over the meadows, pasturages, and woods, and is 

 found in abundance in the towns and dwellings, where it takes the place of our Martin 

 (Hirundo urbica). In the month of August it begins to nest in Rio de Janeiro. The 

 nest is simple, and consists merely of a few straws thrown together on a beam under the 

 roof; two eggs are found in it." 



It was originally found by Azara in Paraguay ; and in Mr. Barrows' notes from 

 Uruguay he writes as follows : — 



" This species was first seen at Concepcion on the 4th of September, 1880, when it 

 was observed in considerable numbers, associated with R. leucorrhoa, from which it was 

 easily distinguished by its smaller size and the absence of the white rump. For nearly 

 six weeks it was observed here from time to time, but after October 20th it was not 

 noted, until at Azul it was found in large flocks on the 27th of January, 1SS1, seemingly 

 ready to migrate northward. It was seen, however, at Bahia Blanca, a few days later, 

 and then almost daily until March 28th at Puan, after which it was not again observed. 

 Of its breeding-habits I know nothing." 



