STAPHYLINID^E. 23 



pointed at tip; prothorax nearly one-half wider than long, the sides but 

 feebly converging and broadly arcuate from the obtuse and rather blunt 

 basal angles to the subtruncate apex, the base strongly arcuate; elytra 

 large, about as wide as the prothorax and subparallel, only just visibly 

 shorter than wide, the suture much longer than the pronotum, the apical 

 sinuses rather deep; abdomen parallel, barely at all narrowing apically, 

 with the sides nearly straight, slightly narrower than the elytra, the fifth 

 tergite slightly longer than the fourth; hind tarsi moderately long, the 

 first joint not quite as long as the next three. Length 2.2 mm.; width 

 0.62 mm. Canada (probably southern Ontario). 



Much smaller than the preceding and with a very different 

 prothorax. 



Oxypoda cruda n. sp. Subparallel, slender, moderately convex, 

 alutaceous, very finely and closely, asperulately punctate throughout, 

 the vestiture fine, abundant and decumbent; color pale castaneous, the 

 head and the abdomen, except apically and feebly at the apices of the 

 basal segments, blackish, the legs pale; head orbicular, slightly wider 

 than long, three-fifths as wide as the prothorax, the eyes well developed, 

 at about their own length from the base; antennae pale throughout, long, 

 stout, gradually and strongly incrassate, the third joint much shorter 

 and relatively stouter than the second, fourth evidently wider than long, 

 the outer joints gradually much larger, the tenth less transverse, about 

 two-fifths wider than long, the last scarcely longer than the two preceding, 

 with the constriction beyond the middle distinct; prothorax two-fifths 

 wider than long, subparallel, the sides broadly arcuate, converging 

 somewhat more apically, the base broadly rounded, the angles very 

 obtuse though distinct, the surface unimpressed; elytra but little shorter 

 than wide, fully as wide as the prothorax, parallel, the suture about a 

 third longer than the pronotum, the apical sinuses deep; abdomen much 

 narrower than the elytra, perfectly parallel throughout, with straight 

 sides, the fifth tergite fully one-half longer than the fourth; tarsi 

 moderate, the basal joint of the posterior not as long as the next three. 

 Length 1.9 mm.; width 0.42 mm. California (Truckee). 



Identifiable by the parallel form, narrower abdomen and large 

 thick antennae. 



Oxypoda cauta n. sp. Narrowly subfusoid, moderately convex, 

 piceous, the head blackish, the abdomen wholly black; elytra paler, 

 castaneous, the legs pale; surface feebly shining, the punctures minute 

 and only moderately dense throughout; pubescence rather long, moder- 

 ately abundant, palish; head large, fully three-fourths as wide as the 

 prothorax, wider than long, somewhat inflated basally, the eyes moderate, 

 at more than their own length from the base, not at all prominent, the 

 facets rather coarse and strongly convex; antennae relatively long but 

 slender, only very feebly incrassate, blackish, paler basally, the second 

 and third joints each much longer than the first, the third only slightly 

 shorter than the second, fourth to tenth somewhat transverse, increasing 



