Platyxix.e 117 



male tarsi piceous, moderately dilated. Length (cf ) 7-3-7-7 mm.; 

 width 3.0-3.1 mm. Lake Superior (Marquette and Bayfield). 



subinflatum n. sp. 

 U — Form elongate-suboval, rather convex, shining, black, the margins 

 of the prothorax feebly picescent, the elytra dark piceous; under 

 surface black, the legs dark rufous; head moderate but with notably 

 prominent eyes; antennae slender, piceous-black, the third and fourth 

 joints equal; prothorax moderate, parallel, with arcuate and finely 

 but abruptly reflexed sides, evidently more reflexed basally, the 

 angles broadly obtuse, with rounded tips; base slightly wider than 

 the rather feebly sinuate apex, arcuate laterally; impressions sub- 

 osolete, the stria very fine; surface with feeble transverse rugulae, 

 broadly deplanate and finely rugulose postero-laterally, the fovese 

 small, very feeble and at lateral fourth; elytra elongate-oval, three- 

 fifths longer than wide, about one-half wider than the prothorax, 

 parallel, with broadly arcuate sides and obtusely rounded at apex, 

 with the sinus distinct; striae rather fine but deep, smooth, deeper 

 at apex; intervals not quite flat, the three punctures all near the 

 third stria; met-episterna three-fourths longer than wide; anterior 

 male tarsi very distinctly dilated. Length (cf) 8.0 mm.; width 



3.0 mm. New Jersey. [PI. propinqiius G. & H.] piceum Lee. 



Form still narrower and the smallest of the subgenus, convex, shining, 

 black, the elytra dark piceous; under surface black, the legs and 

 epipleura rufous; head small though nearly two-thirds as wide as 

 the prothorax, with rather prominent eyes, slightly elongate, the 

 impressions narrow, arcuate and feeble; palpi piceous; antennae 

 black, with paler basal joint, slender, half as long as the body, the 

 third and fourth joints equal; prothorax a fourth or fifth wider 

 than long, the parallel sides evenly and moderately arcuate, finely 

 reflexed, only very little more so at base, the angles obtuse but with 

 the tips well defined and not rounded; base arcuate at the sides, 

 slightly wider than the rather deeply sinuate apex; both impressions 

 are easily traceable though feeble, the stria fine, impressed; surface 

 declivous to the fine reflexed margins; foveae moderate, elongate- 

 oval, rather well impressed and very feebly rugulose, the lateral 

 surface nearly flat; elytra scarcely one-half longer than wide, not 

 quite one-half wider than the prothorax, very feebly inflated behind 

 the middle, the apex gradually ogival in nearly posterior half, the 

 oblique sinus feeble; strife unusually fine and shallow, smooth, only 

 a little stronger at apex; intervals flat, the anterior puncture at the 

 third, the posterior at the second, and the middle puncture axial 

 in the type; met-episterna about twice as long as wide; anterior 

 male tarsi extremely feebly dilated. Length (cf) 6.5 mm.; width 



2.3 mm. Montana (Kalispell), — Wickham humile n. sp. 



Form somewhat as in humile but stouter and with more impressed elytral 

 strice, especially toward the suture, the head and prothorax broader, 

 shining, black, the elytra nearly black, having only the feeblest 

 piceous tinge; under surface black, the epipleura and legs piceo- 

 rufous; head elongate, two-thirds as wide as the prothorax, the 

 eyes well developed but only slightly convex; surface smooth, with 



