Casey — Observaticyns on the Staphylinidae. 265 



more coarsely and sparsely punctured than the remainder of the surface, 

 which is not very closely or coarsely punctate ; pronotal impressions 

 only visible behind the middle and converging toward base. Body 

 rather stout, convex, feebly shining, pale rufo-testaceous, the head 

 piceous, the elytra blackish externally toward tip, the legs and antennae 

 pale, the latter very slightly infuscate distally except at tip; integuments 

 minutely but strongly reticulate, feebly so on the elytra, the abdomen 

 excessively minutely and feebly reticulate in subtransverse broken 

 lines; head wider than long, the sides behind the eyes short, parallel 

 for some distance, then strongly rounded to the neck, the punctures 

 rather distinct, moderately close ; antennae gradually stout distally, but 

 little longer than the head and prothorax, the subapical joints rather 

 strongly transverse, fully three -fourths wider than long; prothorax 

 slightly wider than the head, nearly a third wider than long, parallel, 

 the sides arcuate, becoming feebly sinuate before the obtuse but very 

 distinct basal angles, the surface strongly, asperately and moderately 

 closely punctured, the impressions distinct; elytra a third wider and 

 nearly one-half longer than the prothorax, the truncate apex deeply 

 sinuate externally as usual, the surface strongly, asperately and some- 

 what closely punctured, the pubescence short, somewhat sparse but 

 coarse, pale and distinct. Length 3.3 mm.; width 0.82 mm. Alaska 

 (Fort Wrangel). l=Bolitochara not. Makl.] notata Makl. 



Three basal tergites less deeply impressed and with punctuation which dif- 

 fers but little from that of the remainder of the tergites; pronotal im- 

 pressions parallel S 



6 — Form more slender than in notata but similarly alutaceous in lustre 

 anteriorly, with the integuments minutely reticulate, less so on the 

 elytra, the abdomen very obsoletely so, testaceous, the head and pro- 

 thorax slightly darker and more piceous than the elytra, the latter each 

 with a large and irregular infumate spot externally in apical two- 

 thirds, not attaining the apex; legs and antennae as in notata; head 

 nearly similar, the punctures finer and less distinct; antennae longer 

 and notably less stout, the subapical joints moderately transverse; pro- 

 thorax more distinctly wider than the head, two-fifths wider than long, 

 parallel and arcuate at the sides, becoming feebly sinuate before the 

 basal angles as usual, the surface finely and very closely, asperately 

 punctured, the two longitudinal impressions extending almost to the 

 apex though very feebly and broadly impressed; elytra two-fifths wider 

 and fully one-half longer than the prothorax, the asperate punctureg 

 much less coarse than in notata and very close- set; abdomen much 

 narrower than the elytra as usual, the punctures rather sparse and un- 

 usually inconspicuous throughout. Length 3.1 mm.; width 0.76 mm. 

 British Columbia densicollis n. sp. 



Form nearly similar to the preceding but still less stout anteriorly, the colo- 

 ration also similar, except that the head alone is slightly darker than 

 the prothorax and elytra, the integuments much more shining, polished, 

 the reticulation everywhere obsolete; head and antennae similar, the 

 punctures less close-set; prothorax shorter and more transverse, 

 slightly wider than the head, not quite one-half wider than long, 

 equally finely but less closely punctured, the impressions only visible 



