Coleopterological Notices, V. 547 



angles, margined prosternal lobe, more strongly emarginate meso- 

 sternum, shorter sutural stria, more coarsely punctured propygidium 

 and several other characters. 



H. IllllbrosilS. — Oblong, convex, the minute punctules invisible on the 

 elytra but distinct and moderately close over the entire surface of the prono- 

 tum, with a few stronger punctures near the middle of, and behind, the inner 

 stria. Head minutely punctulate, unimpressed, the frontal stria entire, 

 transverse at apex. Prothorax twice as wide as long, the sides rather strongly 

 convergent and evenly arcuate from base to apex ; fine marginal stria abbre- 

 viated at the middle, the two marginal punctures visible ; outer lateral stria 

 straight, extending to the middle but scarcely at all hooked at apex ; inner 

 sabentire, coarse, nearly straight ; ante-scutellar stria short, strong. Elijtra 

 two-thirds longer than the prothorax and but little wider, the sides evenly, 

 feebly arcuate; inflexed flanks minutely, strongly punctulate and convex 

 anteriorly, abruptly, longitudinally excavated, smooth, more coarsely but 

 sparsely punctate behind, unistriate throughout ; lateral series of punctures 

 only visible toward apex ; outer humeral stria feeble, subtransverse ; inner 

 rather long, continued to apex by the interstrial series of punctures which 

 are feeble ; subhumeral subentire, inwardly hooked at base, the inferior 

 oblique appendage feeble ; dorsals rather coarse, the first three entire ; fourth 

 abbreviated at base ; fifth and sutural equal, apical. Propygidium not v^xy 

 coarsely, densely and evenly punctate, the pygidium scarcely more finely, 

 extremely densely so. Prosternal lobe rounded, feebly margined ; meso- 

 sternum broadly truncate, the median emargination rather shallow ; stria 

 entire. Anterior tibiae arcuate externally, pluridentate, the teeth small, 

 serriform, formed principally by the stout spinules ; posterior with an outer 

 series of spinules and an inner row of rather long, stifl", close-set setse. Length 

 4.4-5.4 mm. ; width 3.3-3.7 mm. 



Oregon, 



May be distinguished from foedatus by its more elongate and 

 oblong form, more strongly punctulate entire disk of the pronotum, 

 shorter sutural stria, more strongly emarginate mesosternum and 

 less transverse elytra. It is however closely allied io feed atvs, the 

 principal differential character being the obviously narrower and 

 oblong outline. Three specimens. 



H. imicus. — Broadly oval, rather strongly convex, the punetulation 

 completely obsolete on the elytra and nearly so on the pronotum, the latter 

 strongly closely and rather coarsely punctate in a broad area along the lateral 

 stria, equally broadly from apex to base, the convex surface thence to the 

 lateral edge minutely but distinctly punctulate. Head subimpunctate, un- 

 impressed, the stria strong, entire, the transverse apical part feebly sinuate 

 throughout. Prothorax rather small, fully twice as wide as long, the sides 

 strongly convergent and evenly arcuate from base to apex; fine marginal stria 



