182 KANSAS UNIVERSITY SCIENCE BULLETIN. 



The Larridse are accorded different values by different 

 authors. By some they are treated as a family; by others 

 they are given subfamily rank. All are not agreed upon what 

 genera should be included and w^hat excluded from the group. 

 While this state of things may in part be the resultant of in- 

 sufficient study and faulty interpretation, it can also follow 

 from the continuity of Nature, in that it does not always permit 

 of well-defined divisions to be made in its realm. 



