308 



University of California Publications. 



[Geology 



such as to indicate that Aquila chrysaetos was abundant and 

 probably the dominant eagle of the region during the Pleisto- 

 cene, and that it has remained till the present time practically 

 unchanged. 



Pigs. 1« to 5b. The anterior faces and the proximal articular surfaces 

 of the tarsometatarsi. All figures natural size. From the Pleistocene of 

 Rancho La Brea. 



Figs, la-lb. Aquila chrymetos (Linnaeus). No. 12788. 



Figs. 2a-26. Haliaetus leueocephalus (Linnaeus). No. 12789. 



Fig. 3</. Morphnus woodwardi, n. sp. No. 12787. 



Fig. 4a. Geranoaetus grinnelli, n. sp. No. 12175. 



Fig. 5a. Geranoaetus fragilis, n. sp. No. 12757. 



