508 BULLETIN G3, UNITED STATES NATIONAL MUSEUM. 



There is scarcely any difference at all except in size and the epi- 

 pleural curve. . 



The age of the asphalt beds at Koseniar}', near Los Angeles, is 

 Quaternary. The remains of the saber-toothed tiger were also taken 

 from this deposit. The remains of the Coleoj^tera were found in the 

 neighborhood of the bones. 



My colleague, Dr. E. C Van Dyke, Avho has devoted time to the 

 study of the origin of the Californian entomological fauna, consid- 

 ers that the above data substantiate the statements that have been 

 made from time to time that a great deal of the so-called Upper 

 Sonoran or Californian fauna found its Avay into this State, from the 

 south, at a very early period, probably during early Tertiary times. 

 In this list are to be included most of the typical genera and sub- 

 genera of the most southern parts of the State. Already at the 

 time at which these deposits were made, most of the species had 

 assinned the appearance that we see in their descendants, the forms 

 living at the present day. 



