104 



BULLETIN 114, UNITED STATES NATIONAL MUSEUM. 



SUMMARY. 



From the preceding descriptions it appears that this group is 

 represented by a series of forms arranged in linear order across the 

 United States and northern Mexico (fig. 24), and that each member 



Fig, 24. — Map showing the distribution of the various forms of the getulus group. 



of the group is most closely related to the form inhabiting the con- 

 tiguous region. Californiae offers the ojAj exception, and this is 

 discussed separately in the section devoted to it. 



