io6 MEMOIRS ON THE COLEOPTERA 



pleura black, the legs black, the tibiae and tarsi obscure rufous; 

 antennae and trophi testaceous; head unusually large for this section 

 of the group, two-thirds as wide as the prothorax, the eyes prominent; 

 antennae slender, the foveae very minute and perforate; prothorax 

 short, more than one-half wider than long, the sides rather strongly 

 arcuate; apex broadly sinuate and nearly as wide as the base, which 

 is transverse; surface almost evenly declivous to the marginal bead 

 throughout, the foveae large, moderately deep, broadly impressed 

 and scarcely at all linear, finely punctate, the convex surface thence 

 to the sides generally with very few scattered punctules basally; 

 median stria fine; elytra less than one-half longer than wide, slightly 

 wider than the prothorax, the parallel sides broadly arcuate, the 

 apex obtuse; sinus very feeble though evident as a rule; striae rather 

 fine but deep, the scutellar long, free, the intervals feebly convex, 

 the puncture small, before apical fourth; basal joint of the hind 

 tarsi much shorter than the fifth. Length (c? 1 ) 8.5-9.1 mm.; width 

 3.0-3.25 mm. Colorado, Levette. Five of the examples are 

 mutually similar as above, the sixth has perfectly flat strial intervals 

 and is without the slightest vestige of the discal puncture on either 

 elytron but seems to be similar otherwise seclusus n. sp. 



Form broader, the size much larger, only feebly convex, shining, the 

 elytra (9) slightly alutaceous; under surface piceo-rufous, the epi- 

 pleura nearly black; femora blackish-piceous, the tibiae and tarsi 

 dusky rufous; cephalic appendages pale testaceous; head rather 

 large, more than three-fifths as wide as the prothorax, the eyes less 

 convex than usual; antennae slender, the small perforate foveae 

 lying in feeble impressions; prothorax short, more than one-half 

 wider than long, the sides rather strongly arcuate throughout, the 

 apex broadly sinuate and but little narrower than the base, which is 

 transverse; surface evenly and rather gradually sloping to the 

 marginal bead throughout the length, the setigerous puncture at 

 apical two-fifths unusually large, impressed and conspicuous; basal 

 foveae large, broadly and deeply impressed and very densely punctate, 

 the punctures and feeble rugulosity extending over the convex 

 surface thence to the sides, gradually becoming sparser; anterior 

 transverse impression distinct; between it and the anterior margin 

 there are numerous longitudinal wrinkles; elytra not quite one-half 

 longer than wide, subcircularly rounded in apical two-fifths, nearly 

 a fourth wider than the prothorax, the parallel sides unusually 

 arcuate; sinus short, very feeble but evident; striae fine, feebly im- 

 pressed, the scutellar long, uniting with the first, the puncture at 

 apical fourth; basal joint of the hind tarsi but little shorter than the 

 fifth. Length (9) 10.0 mm.; width 3.9 mm. California (Placer 

 Co.), Koebele opicus n. sp. 



33 Body oblong-suboval, moderately convex, deep black, very shining 

 throughout (c?), the elytra (9) densely sericeo-opaque; under 

 surface and epipleura rufo-piceous, the femora black, rufous basally, 

 the tibiae and tarsi obscure rufous; cephalic appendages testaceous; 

 head three-fifths as wide as the prothorax, relatively smaller than 

 in the two preceding, the eyes prominent; antennae slender; prothorax 



