XVIII. NOTES ON TROPICAL AMERICAN 

 TETTIGONOIDEA (LOCUSTODEA). 



By Lawrence Bruner. 



The present paper is based on several rather extensive collections 

 of Orthopteroid insects belonging to the Carnegie Museum, which 

 were placed at my disposal for study. These collections were made 

 by different persons and at various times. The majority of the 

 material, however, comes from Brazil, hence this report may be 

 considered a continuation of the series of three reports previously 

 prepared by me and already published. There are still many forms 

 of both Locustoidea and Tettigonoidea that have been put aside for 

 further study, as well as all of the Grylloidea which will be reported 

 upon in future numbers of the Annals. 



The present paper, as was the case with the series already published, 

 contains descriptions of a number of new genera and species. The 

 types referred to in connection with these descriptions are practically 

 all deposited in the collection of the Carnegie Museum. 



Suborder TETTIGONOIDEA (Locustodea). 



Next in numbers and importance to the locusts, or short-horned, 

 are the long-horned grasshoppers. In some of the recent litera- 

 ture dealing with orthopteroid insects the authors have shown a 

 tendency toward considering the group of more than ordinal value, 

 some of them even going so far as to suggest a sub-class comprising 

 several distinct orders and suborders. Two of these writers, Karny 

 and Handlirsch, agree in calling each of the three so-called families, 

 which taken together have been termed the "saltatorial orthoptera, " 

 as sub-orders, and the subfamilies, families. To this latter view I 

 myself am inclined to agree, since by so considering them the con- 

 fusion which has heretofore existed as to their affinities is partially 

 remedied. 



The different members of this group vary among themselves to a 

 much greater degree than do the Locustoidea (Acridoidea), although 

 the latter suborder contains a considerably larger number of forms. 

 Possibly this greater variation among the forms is due to the fact that 



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