Casey — Observations on the Staphylinidae. 801 



joint fully as long as the next two combined, five to ten strongly 

 transverse, blackish, the eleventh darlj, nearly as long as the two 

 preceding combined; punctures coarse and rather numerous at each 

 side of the median line; prothorax about equal in width to the head, 

 scarcely more than two-fifths wider than long, the sides rounded, 

 rather more converging and less arcuate toward base, the surface with 

 rather numerous, irregularly disposed, remotely scattered punctures, 

 the usual four in subtransverse line distinct; elytra strongly transverse, 

 fully two-fifths wider and a third longer than the prothorax, the punc. 

 tures fine and sparse but rather distinct; abdomen broad, subparallel, 

 arcuately narrowing posteriorly, the sixth tergite broadly rounded at 

 apex in the female. Male unlinown. Length 1.65 ram.; width 0.68 

 mm. New York (Catskill Mts.) centralis n. sp. 



17 — Body stout, highly polished, the head and elytra without, and the 

 pronotura with barely a trace of micro -reticulation; head black, with 

 numerous coarse punctures except along the middle, the antennae 

 stout, fuscous, slender and flavate at base, extending to basal third of 

 the elytra, the outer joints strongly transverse; prothorax slightly 

 wider than the head, three -fifths wider than lomr, convex, blackish, the 

 sides long and subparallel, broadly, evenly arcuate, the surface with 

 very few remotely scattered punctures; elytra dark flavo-testaceous, 

 blackish externally toward tip, a third wider and nearly two-fifths 

 longer than the prothorax, the humeri only moderately exposed, 

 rounded, the punctures fine but numerous and rather distinct; abdomen 

 stout, gradually and arcuately tapering from base to apex, rufous, the 

 fourth tergite and most of the fifth black. Male with four fine carini- 

 form asperities in median third of the fifth tergite and near the apical 

 margin, also, generally, one feebler exterior to these at each side, the 

 median pair of asperities shorter and more narrowly separated than 

 either from those adjacent exteriorly; sixth with two very acute and 

 slightly incurvate processes in median two-fifths, the inclosed sinus 

 lobed in the middle, the lobe bearing two small approximate and 

 slender processes, extending posteriorly to the line of the apices of the 

 principal processes and feebly diverging from the base; female with the 

 sixth tergite broadly and evenly rounded. Length 1.4-1.6 mm.; width 

 0.7 mm. Wisconsin (Bayfield), — H. F. Wickham perpolita n. sp. 



Body nearly similar to the preceding but stouter, polished, the head with 

 traces of micro -reticulation toward base, the pronotum obsoletely 

 reticulate; coloration nearly similar, the head and prothorax black, the 

 elytra dark piceo-fiavate, gradually black externally toward tip, the 

 abdomen in great part black, slightly paler toward base and at tip; head 

 with rather numerous coarse punctures, the antennae blackish and stout 

 except toward base, the oucer joints transverse, the second not as long 

 as the next two combined; prothorax much wider than the head, three- 

 fourths wider than long, rounded at the sides anteriorly, thence nar- 

 rowed to the base, the four punctures behind tiie middle of the length 

 large and deep, the others very few and feeble; elytra two -fifths wider 

 and one-half longer than the prothorax, the humeri widely exposed, 

 without reticulation, the punctures fine, irregular and close-set, be- 

 coming scabrous externally toward tip; abdomen broad, feebly tapering. 



