232 Annals Entomological Society of America [Vol. VI, 



The elemental combinations of genera must thus constitute 

 the units of group formations and values. It is proposed that 

 the name of the group-unit be formed by adding i(B to the 

 root of the name of its typic genus. This does not conflict 

 with any of the group endings established by the International 

 Code and by general usage. 



The group-unit permits us to arrange with phylogenetic 

 fidelity the components of stocks whose transition als are largely 

 present, fitting all into a natural taxonomic system. There 

 can be not the slightest doubt that this category is an absolute 

 necessity to the clear and concise taxonomic handling of the 

 forms that comprise the youngest stocks. The further details 

 of the new application of taxonomic principles here outlined 

 largely remain to be worked out. This must be done by 

 applying the principles to the youfig stocks themselves as they 

 exist today. 



