PREFACE. 



The following Tables and Bibliographies are published, not as 

 a finality, but for temporary use by students of Orthoptera in this 

 country, who have few means for working up their collections. 

 The author contemplates a general work on the classification of our 

 Orthoptera, of which this is merely a Prodromus and wliich may 

 serve its pm*pose until the material at hand has been more thor- 

 oughly studied. The frequent demands made for information 

 have prompted it. The greater number of the tables are based 

 upon those of Stal, Brunner and de Saussure, but these authors 

 are in no way responsible for the form in which they here appear. 



A great deal of work has yet to be done, especially in the 

 Saltatorial families, before even the genera of our fauna are 

 fairly known. What is given below includes only data already 

 published or about to be published. Nearly two hundred genera 

 are included in the tables. 



Cambridge, Mass., April 13, 1897. 



