166 PROCEEDINGS OF THE ACADEMY OF [1883. 



generically, from all others hitherto described from the West. 

 Leidy observes/ that mammalian remains received from Gapt. 

 King's expedition include portions of Mastodon and Equus 

 excelsus. Mr. Wortman obtained teeth and bones of the latter, 

 and a cannon-bone of an undetermined ruminant of the size of 

 the Cervus elaphus. The ungual phalange of an edentate allied 

 to Megalonyx was obtained from the same horizon and locality. 

 The map of the adjacent parts of Oregon, Nevada and California, 

 showing the lakes, is copied from the map issued by the War 

 Departn;ent of the United States, Brig. Gen. A. A. Humphreys, 

 Chief of Engineers. 



' L. c, 1870, 67. On Cretaceous and Tertiary Reptilia and Fishes, by 

 Prof. E, D. Cope, November, 1870. 



