SYNOPSIS OF THE GENUS CHLOROTETTIX 3 



especially where they occur abundantly. Some feed on sedges 

 and swamp grasses, while others are numerous in pastures and 

 meadows, often occurring more abundantly on areas shaded by 

 trees and shrubs. This is no doubt due to the fact that the group 

 as a whole live in moist locations and especially in low, swampy 

 fields. One species however, C. suturalis DeLong, is an exception 

 as regards its food plant, living entirely upon Canebrake 

 (Arundinaria tecta) where it is abundant, but has not been found 

 on any other plant. 



In the preparation of this paper I have examined specimens of 

 all the described species except those from Brazil and Jamaica, 

 which are not included in the key. In making the drawings type 

 material was used so far as possible. I have specimens collected 

 at the type locality and compared with Mr. Crumb's types, also 

 have had at hand specimens collected by Prof. Osborn at Fitch's 

 home and compared with his types of tergat-us and uni color. I 

 have used material from the Ohio State University collection and 

 the private collections of Dr. Herbert Osborn, Mr. E. P. Van 

 Duzee, Dr. E. D. Ball and Mr. F. H. Lathrop. Dr. Osborn's 

 collection containing many types and records of all parts of the 

 United States and Guatemala, Mr. Lathrop's collection of South 

 Carolina and Oregon material, and specimens and records from 

 Dr. Ball and Mr. Van Duzee have been a valuable assistance: 

 these together with my own collection containing type specimens 

 from Wisconsin and Tennessee, and representatives of all the 

 described nearctic species except three, have furnished an abun- 

 dance of material. 



To those who have assisted with the loan of material and 

 records for distribution, I wish to express my sincere thanks, 

 and especially to Dr. Osborn who has given me access not only 

 to his type material, but also to his private library, and has 

 offered valuable suggestions and assistance in the preparation 

 of this paper. 



The following pages are concerned only with the systematic 

 study of this group, but a further study has already been under- 

 taken and it is planned to publish as soon as possible the results, 

 dealing exclusively with the biological and ecological phases of 

 this subject. 



