of the North American Orthoptera. 411 



and western portions of our country, — besides the New 

 England collection of Mr. A. Agassiz. To Mr. P. R. 

 Uhler, of Baltimore, — almost the only one in our coun- 

 try who studies the Orthoptera, — I am greatly indebted, 

 both for many valuable suggestions, and for some very 

 interesting insects from various parts of our Union, and 

 especially for the opportunity of examining many species 

 of Ceuthophilus, new to me. From Mr. F. G. Sanborn 

 I have received very rich collections from Massachusetts, 

 including the Orthoptera of the State Cabinet. My thanks 

 are also due to Miss A. M. Edmands, of Cambridge ; 

 Messrs. C. A. Shurtleff, of Brookline, Mass. ; Edward 

 Norton, of Farmington, Conn. ; and A. S. Packard, Jr., 

 of Brunswick, Me., who have generously placed all their 

 collections from their several vicinities in my hands, and 

 to Mr. C. Thomas, of Murphysboro', Illinois, for many 

 specimens from that State. By my own collections along 

 the route taken by Sir John Richardson in Northwest 

 America, I have been enabled to determine the few species 

 described by Kirby, as well as to add others to its fauna, 

 and by specimens collected for a number of years in the 

 New England States, to add considerably to my material 

 for this investigation. 



Such have been my opportunities for the study of our 

 Orthoptera, so far as native species are concerned ; but 

 there have also been of very material assistance to me in 

 generic determinations, — the large series of European 

 Orthoptera in the Cambridge Museum, — and a very fully 

 represented and beautiful collection of European species 

 which I have received from Herrn Brunner von Wattenwyl, 

 who has in his possession the original collection which 

 formed the basis of Fischer's elaborate work. 



I have only made mention in this paper of species 

 which I have myself seen, with but a single exception — 

 Ceuthophilus scabripes, and have endeavored to verify 



