Casey — Observations on the Staphylinidae. 267 



the elytra than in aspera, punctured almost as in punctiventris, the 

 punctures coarse and close-set throughout the extent of the tergites 

 toward base. Length 2.75 mm.: width 0.7 mm. California (Sta. Crue 



Mts.) rngipennis n. sp. 



7 — Body moderately slender, subparallel, shining, black, the elytra each 

 obliquely rufous from the humerus to the suture behind the middle; 

 the abdomen rufescent toward base; integuments very obsoletely 

 micro-ri;ticulate anteriorly j head well developed, somewhat wider than 

 long, the antennae short, but little longer than the head and prothorax, 

 rapidly and distinctly incrassate and blackish distally, though less 

 stout than in rugipennis, the apical joint not paler, the penultimate 

 joints strongly transverse, the fourth distinctly elongate; prothorax 

 but slightly wider than the head, about a third wider than long, 

 convex, finely, asperately punctate, closely so along the middle, 

 more sparsely laterally, the transverse subbasal impression narrow, 

 straight and very feeble; elytra but slightly wider than long, two- 

 fifths wider and fully one-half longer than the prothorax, the humeri 

 moderately exposed at base, the punctures relatively rather small, 

 feebly asperate and distinctly separated; abdomen parallel, almost as 

 wide as the elytra, rather strongly and coarsely, evenly, moderately 

 closely punctured toward base. Length 2.7 mm.; width 0.78 mm. 

 California (Sta. Cruz Mts.) obsolescens n. sp. 



Body smaller and somewhat stouter, parallel, shining, piceo-rufous, the 

 elytra blackish, broadly flavate toward the humeri and narrowly along 

 the suture posteriorly, the abdomen pale toward base, especially at the 

 the sides of the dorsal plates; legs pale, the antennae blackish except 

 toward base, the apex not paler; head wider than long, well devel- 

 oped, parallel, abruptly constricted at base, finely, sparsely and obso- 

 letely punctulate, the antennae short, strongly incrassate, the penulti- 

 mate joints strongly transverse, the fourth scarcely longer than wide; 

 prothorax notably transverse, rather more than one-half wider than 

 long, slightly wider than the head, and, like the latter, minutely and 

 feebly reticulate, finely, not closely and inconspicuously punctulate, 

 the transverse subbasal impression unique in beinc long and anteriorly 

 arcuate; elytra but slightly transverse, about a fourth wider and one- 

 half longer than the prothorax, finely, rather closely and not very 

 strongly punctured; abdomen but little wider than the prothorax, 

 parallel, finely and only moderately closely punctate. Length 2.3 mm.; 

 width 0.7 mm. British Columbia (Victoria) arcaata n. sp. 



g — Pronotum with two broad and very feeble longitudinal impressions 

 tranversely united before the base and obsolete anteriorly well before 

 the middle. Body moderately stout, somewhat strongly convex, 

 shining, black, the elytra rather bright red, blackish about the scutel- 

 lum and broadly toward the sides except in basal third and along the 

 apical margin; basal tergites slightly paler at apex; legs pale, the 

 antennae fuscous, much paler toward base and slightly attbeapox; 

 head and pronotum very obsoletely micro -reticulate, the former only 

 moderately large, transverse, with prominent eyes, the punctures 

 rather strong and close -set toward base; antennae extending almost to 

 the middle of the elytra, moderately incrassate distally, the penultimate 



