MCNEILL REVISION OF THE TRUXALIN^ OF NORTH AMERICA. I 79 



REVISION OF THE TRUXALINiE OF 

 NORTH AMERICA. 



(Read be/ore the Academy, November 2gth, fSgj.) 

 BY JEROME McNEILL. 



It is proper to state that this paper is based largely upon the mate- 

 rial of the United States National Museum, to whose ofificers I am 

 much indebted for the generosity with which the collection was placed 

 at my disposal for study during the three months which I was able to 

 spend in Washington. For these and other favors I am deeply in- 

 debted to Dr. C. V. Riley and Dr. L. O. Howard. Dr. S. H. Scudder 

 has placed me under great obligations by sending me many of the rare 

 and sometimes uni(iue specimens of his less-known species. I have 

 also received help in the way of types and other specimens, as well as 

 valuable 'notes, from Prof. R. S. Morse, which I gratefully acknowl- 

 edge. I am indebted to the kindness of Mr. Coquillett for valuable 

 notes on his very interesting collection of Orthoptera made in Southern 

 California and now included in the collection of the National Museum. 

 Finally, I owe to the generosity of Mr. Ashmead the possession of a 

 small but valuable collection of Orthoptera from Florida. 



My own collection of Orthoptera contains all the species of the 

 Truxalince found west of the AUeghenies, east of the great plains, and 

 north of Texas and Florida and a large portion of the other species of 

 North America outside of Mexico and Central America. I regret ex- 

 tremely that I have not been able to see more of the Mexican species 

 of Saussure and Walker, but the types are not easily accessible and 

 without them the often meagre descriptions are insufficient for the cer- 

 tain determination of their species. With the single exception of 

 Alpha, I have not accepted the genera proposed by Brunner in his ex- 

 cellent Revision du. Systlme des Orthopteres. The brief descri ptions given 

 in his key and the failure to name the species (except in the case noted 

 above) upon which his genera were founded, together with the fact 

 that many Mexican forms were unknown to him, have made it impos- 

 sible to satifactorily identify these genera. 



The Truxalince constitute a sub-family of Acrididce. They are more 

 closely related to CEdipodince than to any other group of equal rank. 



