Coleopterological Notices, V. 549 



wider ; inflexed flanks feebly concave, sparsely, finely punctate, unevenly 

 bistriate; lateral series of punctures feeble, present in apical half only ; outer 

 subhumeral completely wanting ; inner represented by a feeble row of scarcely 

 perceptible punctures ; outer humeral feeble, subtransverse ; inner very short 

 and feeble, longitudinal and coarse at base ; dorsal strise moderately coarse, 

 feebly crenulate within, the first three entire ; fourth and fifth subequal, not 

 extending to the middle ; sutural but little longer ; all the strise ending 

 abruptly at a considerable distance from the posterior margin. Propygidium 

 rather coarsely, extremely densely punctate, the punctures contiguous, a 

 small area at each side near the base impunctate ; pygidium but slightly less 

 coarsely, very densely punctate, subimpunctate at tip. Prosternal lobe 

 finely, sparsely punctate, broadly rounded, scarcely at all margined at apex ; 

 mesosternal sinus deep, the stria entire. Anterior tibise with five or six small 

 external denticles formed by the robust spinules. Length 5.5 mm. ; width 

 3.7 mm. 



Wasbing-ton State. 



The coloration will distinguish electus from any other species 

 except the following, but in the complete absence of the subhumeral 

 stria it is allied to civilis ; the latter is much less convex. 



H. oregonus n. sp. — Narrowly oblong, convex ; minute punctules obso- 

 lete, the pronotum punctate along the base as in electus. Head impunctulate, 

 broadly, feebly concave anteriorly, the stria entire, the apical part Y^drj long 

 and nearly straight. Prothorax notably less than twice as wide as long ; sides 

 parallel and nearly straight in basal half, gradually rounded and convergent 

 anteriorly ; fine marginal stria distinct, entire, slightly incurved at base ; 

 three marginal punctures almost completely obsolete ; outer lateral stria 

 slightly hooked at apex, extending nearly to the middle ; inner subentire, 

 distant from, but nearly parallel to, the sides, sinuate in the middle ; surface 

 between the two strise distinctly but finely, unevenly punctate. Elytra not 

 more than one-third longer than the prothorax, and, near basal fourth, where 

 the sides are a little more strongly rounded, only slightly wider ; inflexed 

 flanks with a broad dilated sulcus, which is coarsely and rugulosely sculp- 

 tured, the second stria not distinct ; inner humeral stria Yerj feeble, short, 

 with a fine detached basal appendix ; strise otherwise as in electus, except that 

 the dorsals are finer and not crenulate, and the sutural extending to basal 

 third. Propygidium not very coarsely but deeply, vqyj densely punctate, with 

 two distant impunctate spots near the base ; pygidium scarcely, more finely, 

 equally densely punctate, gradually becoming subimpunctate behind basal 

 two-fifths, especially along the middle. Anterior tibise triangular, with a 

 prolonged outwardly oblique bifid terminal tooth, but without trace of further 

 serration, except a minute isolated denticuliform spinule near basal third ; 

 posterior tibise rather narrow but strongly, closely, biseriately spinulose. 

 Length 4.4 mm. ; width 2.7 mm. 



Oregon. 



