BIRDS FROM THE FARALLON ISLANDS. 49 



on the mainland. It measures, wing, 59.5 mm.; tail feath- 

 ers, 49 mm.; bill from nostril, 7 mm.; tarsus, 18 mm. 



71. Dendroica townsendi. 



Townsend's Waebler. — Two males were seen on Maj 

 22d, 1887. 



72. Sylvania pusilla pileolata. 



PiLEOLATED Warbler. — Immature male taken September 

 12th, 1886. A female seen May 22d, 1887. 



73. Galeoscoptes carolinensis. 



Catbird. — The occurrence of this bird on the South 

 Farallon has been noted by Mr. 0. H. Townsend, who 

 secured a specimen on September 4, 1884. 



74. Salpinctes obsoletus. 



EocK Wren. — Mr. Emerson found this species to be quite 

 common on the island, and it is the only land bird which is 

 resident. They were found all over the South Farallon, 

 but more numerous about the southern exposure of the light- 

 house hill. They build in suitable crevices a nest of Faral- 

 lon weed, lining it with chicken feathers and hair shed 

 from the island mule. About the entrance they accumulate 

 small bits of rock, coal , mussel shells, and small bones from 

 dead sea-birds and rabbits. Nests containing eggs were 

 found on the 5th of April, 1886, and on June 16th, 1885. 

 Five and six eggs constitute an average set, but one nest 

 was found with ten eggs, two of which were fresh, and the 

 others in various stages of incubation. 



As well as can be Judged from the specimens at hand, 

 which are in worn plumage, the island rock wrens are iden- 

 tically the same as those from various localities in Califor- 

 nia. The average measurements of five males, taken in 

 May, 1887, give the following results: 



2d Ser., Vol. I. Issued January 19, 1888. 



