Before describing these interesting little crickets which have been neglected or overlooked so long in this country, it becomes necessary to enter somewhat into details. The group being one not often written upon, or the specimens often met with, they are therefore rare to collections. Prior to this account but two authentic notices of their capture in the United States have appeared, viz., the one referring to a specimen taken in Georgia by H. K. Morrison, and the other a reference to the present described species, one from the vicinity of Washington D. C., and the other from the Pacific coast, at Portland, Oregon, the former of which is herewith figured (fig. 4), a representing the female, and b the male. This is undoubtedly the largest Myrmecophila known, being fully 4 m. m. in length, while the largest European species measures nearly one fourth less.