Introduction 7 



tribe Delphacini may be included in the family Araeopidae, in the sub- 

 family Araeopinae or in the tribe Araeopini, depending on the implica- 

 tion of the author with reference to the classification adopted in the present 

 catalogue. All categories of less than specific value are included under the 

 designation variety. Varieties which have been given alphabetic designa- 

 tions are here given latinized names for convenience in determining their 

 true status. 



Z. P. Metcalf 

 Raleigh, North Carolina 

 November, 1941 



