Abstract
The present author, having spent the major portion of the period from 1938 to 1942 in Arizona, was privileged to devote the greater part of several summers in surveying the hot deserts in this state. In addition, special collecting trips were made to remote places which in certain mountain ranges were characterized by extreme xeric conditions. Several interesting forms, which constitute the basis of the present paper, were discovered and among these are 1) two new species, 2) two recently described (Tinkham 1944) subspecies of the Decticinae, 3) two species of Acrididae new to North America north of Mexico, and 4) a number of known species from adjacent states which can now be added to the Arizona list. The addition of new species, subspecies, and records for Arizona and the United States, brings the total number of valid species and subspecies or races for Arizona to 292. It is hoped that eventually this number can be raised to 300.
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