In the summer of 1897 I devoted several weeks to a rapid Orthopterological reconnaissance of the Pacific Coast, collecting material at various points from Yuma to Victoria, B. C., and the following paper is based upon the specimens secured at that time. At the request of Mr. Scudder, to whose collection and mine the types belong, I have studied the material, with the results given below.

So far as I am aware, no species of this group has hitherto been recorded from west of the Rocky Monntains, although it is exceedingly improbable that specimens are not to be found in entomological collections from that region. In the following paper, four well-defined species are noted, one of them extending entirely across the continent. Two others are of especial interest, from the great variation presented by them according to locality, and students of the group will do well to collect material in considerable series.