126 MEMOIRS ON THE COLEOPTERA 



more than two-thirds as wide as the base, which is transverse, finely 

 margined and feebly bisinuate, the angles right and distinctly 

 though not broadly rounded; surface broadly convex, the reflexed 

 sides fine and nearly even from apex to base, the fovese narrow, linear, 

 feebly impressed and impunctate, the area thence to the sides almost 

 continuing the convexity of the general surface and impunctate, the 

 stria very fine and broadly biabbreviated; elytra relatively large, 

 nearly one-half longer than wide, more than a fourth wider than the 

 prothorax, parallel, with feebly arcuate sides and very obtuse apex, 

 the sinus feeble but distinct; striae fine, the scutellar unusually long, 

 free, the intervals barely more than flat, the puncture distinct and 

 at apical fourth; hind tarsi with the first two joints subequal, each 

 distinctly shorter than the fifth; accessory punctures very few in 

 number. Length (9 ) 8.0 mm.; width 3.5 mm. Utah. 



oblongus n. sp. 



24 Body more narrowly oblong-oval than in the preceding, deep black, 

 strongly shining, the under surface and legs black throughout, the 

 anterior and middle tarsi (cf) blackish-piceous; antennae slender, 

 extending well behind the thoracic base, black, the two basal joints 

 pale; palpi black with testaceous tip; head small, with rather small 

 but prominent eyes, the foveae small, perforato-punctiform ; mandibles 

 and labrum deep black, the former with a subapical rufous spot; 

 mentum tooth distinct but short and very obtuse; prothorax nearly 

 as in the preceding in general form, not quite one-half wider than 

 long, the sides parallel and barely at all arcuate, rounding and con- 

 verging moderately before the middle, the apex moderately sinuate, 

 with not very broadly rounded angles and fully three-fourths as wide 

 as the base, which is transverse, not evidently bisinuate, with the 

 angles as in oppositus; surface feebly rugulose and alutaceous latero- 

 basally but impunctate and without even a distinct trace of foveae, 

 the reflexed margins fine anteriorly, slightly dilated, bending inward, 

 smooth and feeble posteriorly and obsolete near basal third, the 

 puncture before the middle large and conspicuous, the stria very 

 fine; elytra very nearly one-half longer than wide, only about a 

 fifth wider than the prothorax, parallel, with feebly arcuate sides 

 and obtusely rounded apex, the sinus very feeble though evident, 

 the striae fine, the scutellar long, the intervals flat; puncture behind 

 apical fourth; accessory punctures small, tending to transversely 

 lineate arrangement; hind tarsi very slender, the first three joints 

 diminishing moderately, the first much shorter than the fifth. 

 Length (cf ) 7.3 mm.; width 2.75 mm. Colorado (Eldora). 



sejunctus n. sp. 



Body nearly as in the preceding but larger and broader, moderately 

 convex, very deep black throughout, the tarsi and antennae as in 

 sejunctus in form and coloration; antennae and palpi also similar, 

 slender; head scarcely more than half as wide as the prothorax, it 

 as well as the prothorax nearly as in sejunctas throughout, except 

 that the reflexed edge of the latter is not evidently broader or 

 modified posteriorly and that the foveae are distinct, broadly though 

 shallowly impressed, rugulose and finely punctulate; mentum tooth 



