BIRDS OF LOWER CALIFORNIA. 289 



dashing about at an altitude of 10,000 feet; thej doubtless 

 had nests in the cliffs, but none were found. The only 

 place on the peninsula where I saw this species was at San 

 Borgia, but the occurrence of a large flock on Guadalupe 

 Island has already been recorded. 



164. Trochilus alexandri Bourc. & Mais. 



Black-chinned Hummingbird. — Has been occasionally 

 seen along the northwestern coast by Mr. Anthony. 



165. Trochilus costae (Bourc.) 



Costa's Hummingbird. — Generally distributed over the 

 peninsula and often seen in very barren regions, as reported 

 by all observers. On Santa Margarita Island I found a 

 nest far from water January 17, 1888; it was on an almost 

 leafless branch, three feet high, and contained large young. 

 Many were seen on Cerros Island in January, 1885. Mr. 

 Belding found them tolerably common between Tia Juana 

 and San Pedro Martir. Mr. Anthony has noticed them as 

 high as 9,000 feet elevation. 



166. Trochilus anna (Less ) 



Anna's Hummingbird. — Eeported by Mr. Anthony as 

 abundant about Valladares, but remaining in the vicinity of 

 water. He saw none above 3,500 feet altitude. The cap- 

 ture of three individuals on Guadalupe Island was recorded 

 by me in a previous paper. Mr. Belding and myself ob- 

 tained specimens on Cerros Island, and he found them com- 

 mon between Tia Juana and San Pedro Martir. 



167. Trochilus rufus GmeL 



Rufous Hummingbird. — Taken at San Quintin during mi- 

 gration by Mr. Anthony, who is not sure that T. alleni also 

 occurs, as none were collected. 



168. Basilinna xantusi (Lawr.) 



Xantus's Hummingbird. — At the Cape region Mr. Belding 

 found it only in mountain canons during the winter, but in 



2d See., Vol. H. ( 20 ) December 31, 1889. 



