476 PROCEEDINGS OF THE AMERICAN ACADEMY. 



It has also been reported from Tennessee, Saussure ; Indiana, "Walker ; 

 southern Illinois, Thomas ; and even from Quebec, Canada, Provancher. 

 I have myself seen Provancher's specimen, but must confess to some 

 doubt whether it was actually taken in that part of Canada. 



The following described species I have not been able to determine. 



Acridium carneipes Serv., Orth., G65 (1839). Berg regards this as a synonym of 

 <S. peregrina. 



Cyrtacanthacris concolor Walk., Cat. Derm. Salt. Brit. Mus., IV. 610 (1870). 



Cyrtacanihacris diversifera Walk., Log. cit., IV. 611 (1870). Probably a Melano- 

 plus. 



Acridium emortuale Sauss., Orth. Nov. Amer., II. 13 (1861). This appears to ap- 

 proach S. desiliens Scudd., but the eyes of the latter species are not " maxime 

 appropinquati." 



Acridium luridescens Walk., Loc. cit., III. 583 (1870). 



Acridium panthennum Walk., Loc. cit., IV. 623 (1870). Pretty certainly not a 

 Schistocerca. 



Acridium picei/rons Walk., Loc. cit.. III. 578 (1870). 



Acridium proprium Walk., Loc. cit., IV. 621 (1870). 



Acridium strenuum Walk., Loc. cit.. III. 580 (1870). 



Acridium toltecum Sauss., Loc. cit., II. 14 (1861). Probably not a Schistocerca. 



Acridium varipes Walk., Loc. cit.. III. 681 (1870). Very doubtful if it be a Schis- 

 tocerca. 



Acridium vicarium Walk., Loc. cit, III. 580 (1870). 



Acridium vitticeps Walk., Loc. cit., III. 579 (1870). 



