Abstract
To this group belong the largest carabids in the State, distinctive in appearance, active in habits, and widespread in occurrence. Many are of importance in working out problems of speciation, distribution, and probable ports of entry of special groups. Species now" isolated on montane islands throughout the State throw considerable light on the significance and effect of Pleistocene glaciation on animals of the western Great Basin, information which is more directly traceable to its antecedent factors than such data usually sought in more conspicuous but less significant groups such as birds and mammals.
