6 Introduction 



Monotype — A unique species named by the founder in connection with 

 the description of the genus, but not explicitly named the type by 

 him. 



Logotype — A species subsequently selected as the genotype, either by 

 the founder or by another, from several species assigned to the 

 genus at its founding, no orthotype having been designated by the 

 founder of the genus. 



In accordance with the desire of the Editorial Board, the genera have 

 been arranged as nearly as possible in their true systematic order, but the 

 species are listed alphabetically under each genus. In Appendix A will 

 be found the genera which have been wrongly included in the Pyrrho- 

 coridae together with the species concerned, and in Appendix B the Pyr- 

 rhocorid species which have been described under generic names nov/ 

 assigned to other families. 



Roland F. Hussey 



New York City, New York, U.S. A. 

 April 13, 1929 



