FREKACE. 



In 1892 I published in the "Transactions of the American Ento- 

 mological Society " a synopsis, catalogue and bibliography of our 

 Neuropteroid insects. During the fifteen years that have elapsed 

 since then a large number of species have been described and several 

 families have been the subject of revision. Abroad there has also 

 been an awakening in the study of both European and exotic Neu- 

 ropteroid insects ; so that now we know much better the genera, as 

 well as the species, of Europe and tropical countries. All this has 

 helped in the study of our forms, and although there are many 

 families yet to be revised, still the condition of our knowledge of 

 our Neuropteroid insects is to-day on a plane fairly comparable to 

 that of most other orders of insects. 



These additions of the last fifteen years are widely scattered in 

 our literature, and to bring them in catalogue form together with 

 the older species will, I hope, facilitate the study of these insects. 



The various groups of Neuropteroid insects are so strikingly dif- 

 ferent, one from the other, that many entomologists have regarded 

 each of the older families as an order. Extreme views are hardly 

 suitable for a catalogue, so I have here adopted five orders, which 

 are now in fairly common use. These are the Isoptera or white 

 ants, the Corrodentia, the Archiptera or Pseudoneuroptera, the 

 Neuroptera, now restricted, and the Trichoptera, or caddice-flies. 

 Under these terms I place some other groups as suborders, super- 

 families, etc. I have not included the Odonata, or dragon -flies, in 

 this catalogue, partly because I have not studied them recently, and 

 partly because those who do study them take but little interest in 

 the other groups. They will constitute another order, Odonata, 

 closely related to the mayflies. Altogether there are nearly 900 

 species listed in this catalogue, arranged under 210 genera. The 

 catalogue may be considered complete up to the summer of 1907. 



LOCALITIES. 



E. S. = Eastern States ; N. E. S. == Northeastern States ; S. 

 W. S. = Southwestern States; U. S. = United States, etc. 



