Young. Sooty brown, lighter on the rump and upper tail-coverts ; below ashy white, the throat dark 

 brown. 



Hab. The Andes of Bolivia, Peru, Ecuador, and Colombia. 



This species appears to have been first described by Pere Peuillet, in a book which we 

 bave not seen, entitled 'Journal des Observations physiques' (p. 33), published in 1725. 

 From this work Brisson took his description of the " Hirondelle du Perou," which was 

 subsequently the origin of Latham's " Ash-coloured Swallow " and Gmelin's Hirundo 

 cinerea. 



Eifty years after, the species was described by D'Orbigny and Lafresnaye as Hirundo 

 andecola, from a sjiecimen procured by the former at La Paz in Bolivia. Tschudi next 

 met with it in Peru, where he says that it inhabits all the hot valleys of the Sierra. 

 Messrs. Sclater and Salvin have also recorded specimens obtained by Mr. Henry Whitely 

 in Western Peru, viz. at Arequipa in May, and again at Tinta in the same month. 

 Mr. Jelski obtained it in Central Peru between Cucas and Palcamayo, and Mr. Stolz- 

 mann at Tamiapampa. 



In Ecuador Mr. L. Eraser met with the species near Quito, where it was very 

 common in and about the city. In May he observed that this Swallow was building 

 under the eaves of houses, and the nest forwarded by him was, according to Dr. Sclater, 

 " a shallow structure, composed of moss and lined with a little wool. The egg is of a 

 spotless white, 0*72 inch in length by about 051 inch in breadth, and has the usual 

 character of birds of this group." The late Mr. Clarence Buckley procured specimens 

 at Sical, and these are now in the Salvin-Godman collection. Messrs. Stolzmann and 

 Siemiradski have also met with the species in Western Ecuador at Ticsan, at an 

 altitude of from 7000 to 9000 feet. Count von Berlepsch and Dr. Taczanowski, in 

 recording the above specimen, state their belief that the description of Hirundo cinerea 

 of Gmelin is not sufficiently definite to distinguish the species. In this opinion we are 

 unable to follow them, while the series in the British Museum shows that there is no 

 specific difference between birds from Peru and Ecuador. 



The species also inhabits Colombia, as there are specimens in the Sclater and Salvin- 

 Godman collections from the vicinity of Bogota. 



The descriptions are copied from the British Museum ' Catalogue,' and the figure of 

 the old bird is drawn from a specimen in the Salvin-Godman collection, while that of the 

 young one is taken from a specimen in Mr. Wyatt's collection. 



