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 284
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