Casey — Observations on the Staphylinidae. 141 



three; mesosternal process moderate in width ia comparison with the 

 precediuji species, the metasternum very broadly, feebly angular. 

 Length 4.8 mm.; width 1.3 mm. California CLake Tahoe). 



tahoensis n. sp. 



Form less stout, smaller in size, shining, black, the elytra bright rufous, 

 with the ioflexed flanks black; legs pale, the antennae black, piceous at 

 base; head distinctly less than half as wide as the prothorax, finely, 

 sparsely punctate ; antennae much longer than the head and prothorax, 

 less incrassate than in tahoensis, the third joint much longer than the 

 second and relatively more elongate than in that species; prothorax 

 three- fifths wider than long, strongly narrowed toward apex with the 

 sides moderately arcuate, more strongly so toward bise, the angles 

 much more broadly rounded than in tahoensis, the base broadly arcuate; 

 punctures fine and rather sparse; elytra short, the sides evidently 

 shorter than those of the prothorax, the suture two-thiris as long as 

 the median line, the punctures finer and less asperate than in the pre- 

 cecling species, moderately close-set; abdomen nearly similar but rather 

 more coarsely and sparsely punctate, at base as wide as the elytra, 

 moderately narrowed thence to the tip; basal joint of the hind tarsi 

 somewhat shorter than the last two combined; metasternum nearly as ia 

 tahoensis. Length 3.7 mm.; width 1.2 mm. Kansas (Douglas Co.), — 

 F. H. Snow kansana n. sp. 



11 — The punctured part abbreviated, not attaining the tip of the process 

 by the width of the coxa! grooves approximately; metasternum broadly 

 angulate 12 



The punctured part attaining the apex of the process or virtually so 13 



12 — Body moderately stout and convex, shining, black, the sixth abdominal 

 segment rufous toward base ; elytra bright red, the base and sides black 

 except at the humeri; antennae dusky, the legs pale piceo-rufous; head 

 small, much less than half as wide as the prothorax, sparsely, feebly 

 punctate, the antennae rather stout distally, with the second joint 

 much shorter than the tbiri, longer than the head and prothorax, the 

 latter scarcely two -thirds wider than long, the sides unusually conver- 

 gent anteriorly and rither feebly arcuate, the base only raodflrately 

 rounded, the angles very much rounded though not obliterated, the 

 punctures very fine and not dense; elytra shorter than the pro- 

 thorax, the punctures stronger and asperate, irregular, fiue and very 

 dense along the basal concavity, elsewhere much less close-set and 

 rather coarse ; abdomen distinctly narrowed from the base, the punctures 

 coarse and moderately sparse, very conspicuous, the sixth tergite sinu- 

 ato-truacate at tip. Length 4.4 mm.; widti 1.2 mm. New York (near 

 the city) pleuralis n. sp. 



Body moderately stout, less parallel, the prothorax much smaller, black, 

 the elytra bright rufous with the sides and basal margin black, the 

 sixth abdominal segment rafous, black toward tip; legs pale red-brown, 

 the antennae black, rufo-piceous at base; head larger, half as wide as 

 the prothorax, finely, sparsely punctate, the antennae attaining the mid- 

 dle of the elytra, less incrassate distally, the subapical joints only mod- 

 erately transverse, the second and third joints much elongated, the 

 former much the shorter; prothorax less narrowed from base to apex, 



