214 BULLETIN UNITED STATES GEOLOGICAL SURVEY. [Yol.TL 



Sitta jpygmcea Yig. — Pigmy Nuthatch. 



Also occurs iu the elevated pine regions, and appears more abundant 

 than either 8. carolinesis aculeata or ;S'. canadensis. Dr. Cooi3er notes 

 one from Lake Tahoe, in the Sierras, as larger than the specimen from 

 Monterey, Cal., the original locality of the species, though this differ- 

 ence may have been owing to age. Mr. Eidgway secured specimens at 

 Carson City from February to April. 



CERTHIID^. 



Cerl^iia familiaris rufa (Bartr.) Ridgw. — Brown Creeper. 



Is found in the pine regions during summer, and retires, according to 

 Mr. Eidgway, to the timbered valleys during the winter. Specimens of 

 what appeared to be this species were observed at Bull Eun Mountain 

 about May 25. Mr. Eidgway found it more or less common in the val- 

 leys of the Truckee and Carson Elvers during winter, the date of cap- 

 ture of his specimen being marked December 7. 



TEOGLODYTIDJE. 



Campylorliynchus hriinneicapilhis (Lafr.) Gray. — Cactus Wren. 



This species was met with only in the sandy deserts, about 30 miles 

 northwest of Fort Mojave, among the cactus and yucca. Its northern 

 limit on the Californian side is fixed at about 36°, though on the eastern 

 side of the Sierras it is noted by Mr. Henshaw as occurring at Saint 

 George, Utah. In the interior basin it is probably confined more par- 

 ticularly to the deserts of Southern llJJ^evada, west of the Colorado Eiver, 

 which abound in cactus in considerable variety and profusion. 



Salpinctes obsoletus (Say) Caban. — Eock "Wren. 



Dr. Cooper notes of this species, "Their song begins to be heard at 

 Fort Mojave in February, and continues through the spring." They 

 probably leave the valley uj^on the approach of warm weather, follow- 

 ing the mountains in their northern migration, which extends as far as 

 the upper boundary of Nevada. Mr. Henshaw states it to be very com- 

 mon throughout the eastern portions of the State, while Mr. Eidgway 

 procured specimens in March and April at Carson City, and during Sex)- 

 tember and October in the West Humboldt Mountains. 



CatJierpes mexicanus conspersus Eidgw. — White-throated Wren. 



Probably a winter resident of the State, Dr. Cooper finding it in April 

 at Fort Mojave. Mr. Eidgway states that its distribution and habits 

 are somewhat similar to the Eock Wren {S. obsoletus), although no speci- 

 mens are actually mentioned as secured either at the eastern slope of 

 the Sierras nor at any other locality favorable to its occurrence. 



