ORNITHOLOGY OF SAN DIEGO COUNTY. 427 



15. Trochilus alexandri. 



Black-chinned Hummingbird.— Commou. More so than 

 any other of this genns. Fresh eggs were taken, and half- 

 fledged young found April 23d. 



16. Trochilus anna. 



Anna's Hummingbird. — Eare. One male seen. 



17. Trochilus rufus. 



KuFOUS Hummingbird. — Rare. 



18. Tyrannus verticalis. 



Arkansas Kingbird. — Common. Nests were ready to re- 

 ceive eggs by the last of April. 



*19. Tyrannus vociferans. 



Cassins Kingbird. — Common. Nests about the same time 

 as the Arkansas Kingbird, but the eggs are not distinguish- 

 able from those of that species. 



20. Myiarchus cinerascens. 

 Ash-throated Flycatcher. — One pair seen. 



*21. Sayornis nigricans. 



Black Phgebe. — Common. Eggs taken April 27th. 



22. Empidonax difficilis. 



Baird's Flycatcher. — Was noticed only once, on April 

 8th. 



*23. Otocoris alpestris rubea. 



Ruddy Horned Lark. — Tolerably common. Incubated 

 eggs were found April 20th. 



24. Aphelocoma californica. 

 California Jay. — Commou. 



