STAPHYLINID.E . 1 5 



with thick margins, to the apex of the fifth tergite, which is not quite as 

 long as the fourth, the three basal impressions large and deep; sixth 

 tergite in the type broad and feebly sinuato-truncate, almost even, the 

 sixth ventral broad and feebly arcuate at tip. Length 2.2 mm., width 

 0.77 mm. Idaho (Cceur d'Alene), Wickham. 



To be known readily from the two following by its rather stouter 

 form and finer punctures and vestiture. 



Acrimea acerba n. sp. Moderately stout, blackish-piceous, the elytra 

 slightly paler, the legs dark brown, feebly shining, the punctures rather 

 close, strongly asperate on the elytra, somewhat sparse, very feeble and 

 bilinear on the abdomen, the vestiture short, subdecumbent, somewhat 

 close and coarse, palish; head notably small, but little more than half 

 as wide as the prothorax, as long as wide, somewhat wider basally than 

 at the eyes, which are not at all convex, finely faceted and at more than 

 their own length from the base, the tempora feebly arcuate, the surface 

 evenly convex; antennae pale brown, rather short, very strongly incras- 

 sate, the third joint much elongated, not so very much shorter than the 

 first two combined, the fourth a little longer than wide, tenth not quite 

 twice as wide as long, the last ogival, rather longer than the two pre- 

 ceding, simple; prothorax very transverse and evenly convex, nearly as 

 in reseda but smaller, only a little wider than the elytral base and some- 

 what narrower than the apex; elytra transverse and short though less 

 so than in the preceding, the suture very nearly as long as the prothorax; 

 abdomen as in the preceding but more tapering from base to apex, with 

 feebly arcuate sides and very thick margins, the basal tergites, and es- 

 pecially the third, less impressed, the sixth (cf ) with a very shallow median 

 sinus at apex, the sides of the sinus with about three small acute crenules, 

 the median part slightly produced in a small rounded lobe, the sixth 

 ventral plate circularly rounded. Length 2.4 mm.; width 0.7 mm. 

 Washington State (North Yakima), Wickham. 



Distinguishable at once from reseda by its less stout form, more 

 tapering abdomen with much feebler sculpture and less impressed 

 basal tergites, smaller head and coarser vestiture. 



Acrimea fimbriata n. sp. Stout, rather pale ferruginous, the head and 

 fourth tergite blackish, the legs pale, somewhat shining, the punctures 

 rather fine and well separated, very asperate on the elytra, feeble and 

 bilinear on the abdomen; pubescence loose, subdecumbent, pale fulvous 

 and coarse, very coarse on the elytra, more hair-like and longer on the 

 abdomen, the fringe at the apical part of each tergite conspicuous; 

 head small, orbicular, as long as wide, the eyes not convex and at their 

 own length from the base; antennae blackish, gradually flavescent basally, 

 short, very strongly incrassate distally, the first three joints equal in 

 length, the fourth somewhat longer than wide, the tenth about twice 

 as wide as long, the last gradually obtusely pointed, longer than the 

 two preceding; prothorax nearly as in the two preceding but less dilated 

 and barely as wide as the elytral base, the elytra less transverse, parallel, 



