90 "Mv. C. H. B. Grant on Birds collected in Argentina, 



weeks with P. domesticn, which was breeding in the out- 

 buildings, and, fearing that it would leave, I at last shot it. 



19. Progne domestica. 



Proyne domestica Sharpe, Cat. B. x. p. 177. 

 Progne chalyhea Arg. Orn. i. p. 25. 



a. $ young. Los Ynglases, Ajo. Jan. 14, 1909. 



b. ? young. „ „ Feb. 7, 1909. 



c. ? ad. „ „ March 2, 1909. 



d. S ad. Colonia Mihanovitch, N. Argentine. Aug. 13, 

 1909. 



The March bird is moulting. 



A summer visitor to the Ajo district, and breeding in 

 the ontbuikliugs, the nest being placed on a horizontal 

 rafter or support. It is composed of mud and grass and 

 lined with feathers : five or six eggs form the complete 

 clutch. 



The young differ from the adult, as in P. chalyhea. 



20. Progne tapera. 



Progne tnpera Sharpe, Cat. B. x. p. 180 ; Arg. Orn. i. 

 p. 26. 



a. $ ad. Los Ynglases, Ajo. Oct. 20, 1908. 



h. ? ad. „ „ Jan. 25, 1909. 



c, d, e. ? ad. „ „ Feb. 4-16, 1909. 



f,g. S ad. Rabiclio, Brazil. Oct. 8, 1909. 



h, i. ^ $ ad. Nr. Villa Pihar, Paraguay. Nov. 7, 1909. 



k. S • Nr.Esquina, N.Argentine. Nov. 14, 1909. 



Irides hazel ; bill, legs, and toes sooty brown. 



The February specimens are rather worn, but are not 

 moulting, and all appear to be fully adult. 



This arrives later than any of the other Swallows in 

 the Ajo district, and does not leave till winter is well in. 

 It occupies the nests of Furnariiis rvfus after the latter 

 has left them, and its own nest is composed of grass and 

 feathers. 



On the river expedition a few were seen between Puerto 

 Pinasco and Puerto ]\Iaria on the 7th of September, and a pair 



