Blackish, spotted with cinereous; thorax with an impressed line, an obtuse tubercle on each side. Body covered with short robust hairs or scales, brownish-black, spotted and varied with cinereous, imbricate: head, when at rest, completely retracted within the thorax, somewhat retuse between the eyes: thorax, anterior margin abruptly contracted into a collar; posterior edge minutely dentate; an impressed longitudinal line becoming canaliculate towards the scutel; an obsolete, obtuse tubercle each side of the middle: elytra striate; striae with scales concealing the punctures; interstitial lines with elevated and acute points partially concealed by the scales; tip rounded and piceous on the edge: anal segment black: feet rufous: thighs mutic. Var[iety]. a: A common double abbreviated white line at the base of the suture. Length more than one-tenth of an inch. The variety occurs in Pennsylvania.