474 BIRDS OF THE GALAPAGOS ARCHIPELAGO— RIDGW AY. vol.xi> 



List of birch ascertained to occur on Indefatigable Island. 



a Off pass between Indefatigable and James islands and between Barrington and Indefatigable 

 islands. 



Doctor Habel saw in the Puerta de la Aguada ou ludefatigable Island 

 "two species of swallows. One, a large kind, kept to the perpendicn- 

 lar rocks which lined the estnary, and did not tiy inland; the other, 

 smaller, Hew about the island, but too rapidly to be shot by me." The 

 first-mentioned species is with scarcely any doubt Progne modesta; but 

 the second has not yet been seen by other explorers, and therefore 

 remains unidentified. It may possibly be a species of swift, perhai)s 

 of the aenus Vltivtaru. 



