48 Memoirs on the Coleoptera 



impressions flexed outwardly behind; palpi slender, with feebly 

 pallescent tip; antennae barely half as long as the body, the pubes- 

 cence dark, the third joint a little longer than the fourth; prothorax 

 short and strongly transverse, nearly two-fifths wider than long, 

 the sides inflated and strongly rounded before the middle, oblique 

 but barely at all sinuate posteriad, the margins less finely reflexed 

 and rather widely so basally, forming the outer wall of the large 

 and broadly concave, rugose, anteriorly attenuate foveae; surface 

 with conspicuous transverse rugulae and fine deep anterior im- 

 pression; base wider than the apex, with very sharp angles, the 

 apex deeply sinuate, with well marked prominent angles; elytra 

 less than one-half longer than wide and not one-half wider than the 

 prothorax, the broadly arcuate sides but little more rounded basally, 

 the subapical sinus rather broad and shallow; strise acutely grooved, 

 not so fine as in funebris, not coarser at apex; the intervals not 

 quite so perfectly flat; three punctures small; legs slender. Length 

 (9) 8.3 mm.; width 3.25 mm. California (Redwood Creek, Hum- 

 boldt Co.) morbillosus n. sp. 



5 — Third and fourth antennal joints equal; prothorax most strongly 

 rounded at the sides near anterior third; strial intervals feebly con- 

 vex in the female. Deep black and shining throughout; head 

 rather more than three-fourths as wide as the prothorax, with large 

 and rather prominent eyes, the slender black palpi with the extreme 

 tip barely pallescent; anterior impressions parallel, deep; antennae 

 slender, nearly half as long as the body, black as usual, faintly 

 picescent distally; prothorax as long as wide, the sides strongly 

 rounded anteriorly, oblique behind the middle, then sinuate, becom- 

 ing parallel in about basal fourth, the angles very sharp and out- 

 wardly somewhat prominent; margins finely, sharply reflexed, only 

 . a trifle more so basally; surface with fine strigilation, stronger in 

 the anterior foveal region, the foveae large, rather deeply concave, 

 rugose, disappearing beyond the middle; base somewhat wider 

 than the deeply sinuate apex, having the prominent angles rather 

 sharp; anterior impression very faint; elytra one-half longer than 

 wide, twice as wide as the prothorax, obtusely ogival behind, the 

 sides more rounded at base, the subapical sinus extremely feeble; 

 striae fine, extremely finely, closely and obscurely punctulate; in- 

 tervals feebly but distinctly convex; punctures fine, the two pos- 

 terior near the second stria as usual in this section; met-episterna 

 twice as long as wide. Length (9) 9-0 mm.; width 3.3 mm. 

 Nevada (Reno) nevadensis n. sp. 



Third antennal joint longer than the fourth — this character always 

 being independent of sex; prothorax not quite as long as wide, 

 widest and most rounded at the sides slightly before the middle; 

 strial intervals perfectly flat (9 ), slightly convex (cf) 6 



6 — Body relating somewhat stouter than in nevadensis, distinctly convex, 

 deep and slightly bluish black, polished throughout in the male, 

 the female elytra only slightly alutaceous; head four-fifths as wide 

 as the prothorax, with large and prominent eyes; antennae black, 

 moderately slender, nearly half as long as the body; prothorax a 



