Among the 55 known species of the genus Stephanitis in the world, Stephanitis veridica Drake and S. distinctissima Esaki et Takeya, both described from Formosa, are remarkable in having the extremely long lateral carinae on pronotum. The latter of these species is also peculiar in the characteristic in having the quadriseriate sutural area of elytra. Recently I found two remarkable, apparently new, species, both from Japan, of the same characters as those mentioned above.