22 THE ENTOMOLOGICAL CODE. 



CATEGORY III. 



(Superfamily, Family, and Subfamily Names.) 



108. The name of a family shall be formed by changing the last 

 syllable of the genitive case of an included generic name (preferably 

 the oldest) into idse. 



109. The name of a subfamily shall be formed by using "inx" in 

 place of the idse. One of the subfamily names shall be based on the 

 same generic name as that of the family of which the subfamily is a 

 part. 



110. The name of a superfamily shall be formed by replacing the 

 "idse" of one of the included family names with "oidea." 



111. The name of a tribe (a prime division under the subfamily) 

 shall be based on that of an included genus, and shall end in "ini." 

 One of the tribes under a subfamily shall be based on the same 

 generic name as that on which the subfamily is based. 



112. The name of a subtribe (a prime division under the tribe) 

 shall be based on an included genus and end in "ina." One of the 

 subtribes shall be based on the same genus as that of the tribe of 

 which it is a part. 



Note. — The term "group," formed by adding "set' to the stem of 

 a genus, is used by many under the -tribe, subtribe or subfamily, but 

 the term is used also for other grades and is inadvisable owing to 

 this confusion. 



113. The name of a family or subfamily is to be changed when 

 the basic generic name is a homonym, or is removed from the family 

 or subfamily, or becomes a synonym. 



114. If there are two or more names proposed for the same family 

 or subfamily ending in idse or insc, the earlier name shall be adopted. 



115. If there are two family or subfamily names of the same 

 spelling, the more recent shall be replaced, or so modified as not to 

 conflict. 



CATEGORY IV. 



(Superordinal, Ordinal, and Suborddnal Names.) 



116. The names of superorders, orders, and suborders have no 

 relation in formation to names of lower rank. 



117. No change in the commonly accepted names in this category 

 should be made for any cause, but when two or more names are in 



