8 



dug- by the Bank-Swallow." Finally, Mr. Agersborg states that, although rarer than 

 C. riparia, it breeds in South-western Dakota in common with that species, along the 

 Vermilion and Bi<? Sioux rivers. 



Beyond the borders of the United States it becomes more difficult to trace the range 

 of the Bough-winged Swallow. As Messrs. Salvin and Godman state, it is doubtless 

 resident in Mexico, but the evidence on this point is not satisfactory. Professor Ferrari- 

 Perez records a specimen from Jala pa in August, and from this district came the type 

 of Gotile fulvipennis of Sclater, obtained by de Oca ; this is nothing but the immature 

 bird of S. serripennis. The other localities given by Messrs. Salvin and Godman in the 

 'Biologia' are Nuevo Leon [Couch), valley of Mexico (Le Strange), Cordova (Salle). 

 The bird obtained by Botteri near Orizaba is in full nesting-plumage, and the bird 

 probably breeds in that district, but that the Plough-winged Swallow breeds within 

 Mexican limits is proved by two nestling specimens obtained by Mr. A. Forrer near 

 Presidio in June. Nor is the nesting of the species in Mexico to be wondered at, for we 

 have undoubted evidence that it breeds in Guatemala. Messrs. Salvin and Godman have 

 received specimens from Mr. Ferrari-Perez, collected in the Valley of Mexico in 

 November and May, at Jalapa in June (one specimen being a nestling), and at Huatusco 

 in August. Mr. W. B. Bichardson has sent examples from Bolahos in Jalisco (March), 

 and Mr. W. Lloyd procured one at Beltran and Zapotlan in the same province (April). 

 Trujillo has also procured the species at Sola, in Oaxaca, in April, and at Juchatengo in 

 April. Messrs. Salvin and Godman give many localities where they observed it in 

 Guatemala, and Mr. Salvin states that it was common in Jrdy on the open lands, 

 and flying about the lake of Duenas. Mr. Bobert Owen, who iound one nest and five 

 eggs near San Geionimo, writes : — 



"The nest is composed of grass and fine roots, the inside being strewn with pieces 

 of dead flag. The eggs are white, and measure, axis "7, diain. '5 inch. The nest was 

 dug out of the white sandy soil of a barranco in the Convent garden. The cave ran 

 horizontally, and was about two feet in length, terminating in a chamber of just sufficient 

 dimensions to allow the bird to turn round." 



Dr. Schott procured the present species at Merida, in Yucatan, and Mr. George 

 Cavendish Taylor believed that he saw it in Honduras, but that the evidence is not 

 considered convincing by Messrs. Salvin and Godman is proved by their having omitted 

 it from the ' Biologia.' Carmiol procured specimens at Attiro, in Costa Pica, and Mr. 

 Boucard records " several specimens from San Jose, March to May." He adds : "They 

 are principally seen flying near the streams, sometimes in large numbers. The first 

 time I had a shot at them I killed six ; there were about fifty on a small tree. Although 

 1 have killed a good many, I never found a female amongst them. I suppose the females 

 must have been in their nests somewhere, but where I was never able to find out." Two 

 specimens are recorded by Mr. Salvin from Calovevora, in the State of Banama, collected 

 by Arce, and this is the most southern limit of the range of the Bough-winged Swallow 

 yet recorded. 



