44 PROCEEDINGS MANCHESTER INSTITUTE 



on the border line between this city and Bedford. It is a fact 

 worthy of investigation that, so far as is known, A. 7'ubiginosuni 

 has not been found upon this side of the river, while upon the 

 west bank it is not uncommon. 



M. atlanis and M. femitr-rjibrum, two closely allied species, are 

 the most numerous of all the Acrididse. They are probably both 

 destructive in their habits to a greater degree than is generally 

 realized, but S. H. Scudder, in his "Revision of the Melanopli," 

 says of M. atlanis : " Next to M. spretus this is our most destruc- 

 tive locust, and east of the Mississippi probably the only one ever 

 doing much damage. Its injuries, however, are not for a moment 

 to be compared to M. spretiis, for, though possessing good powers 

 of flight and on rare occasions known to migrate in swarms, its 

 injuries can only be classed as local, and they are never so serious 

 as those inflicted by M. spretiis ; nevertheless, they are by no 

 means slight, and immense destruction of grain is to be laid at 

 its door." 



And again, wndQv M. feinw-j'ubrwn, in Hayden's Report of the 

 Survey of Nebraska, 1872 : "I collected several accounts, print- 

 ed and unpublished, of the injury to crops attributed to this spec- 

 ies in the eastern United States. As up to that time M. atlanis 

 had not been distinguished from M. femnr-rnbrum, it is possible, 

 and I am now inclined to think it probable, that all the serious in- 

 jury done to the crops in the East is done by M. atlanis ; for, al- 

 though almost everywhere less numerous than M. feinnr-rubnim, 

 M. atlanis has been shown to have the capacity for immense mul- 

 tiplication, and has been directly proved to be the culprit in some 

 instances ; as it is also much more closely, and indeed very closely, 

 related to the destructive locust of the West. At least until 

 direct, provable charges are made against it, M. feinur-rubrnm 

 should be looked upon as less injurious than M. atlajiis.'" 



IV. SUB-FAMILY Tettig-inse. 



The members of this curious and interesting sub-family are 

 easily recognized by their small size, absence of pulvilli between 

 the claws, extended pronotum over the abdomen, and their re- 

 markable activity. Four local species have been collected during 

 the past season : 



