Casey — Observations on the Staphylinidae. lo& 



than the median line; abdomen not quite as wide as the elytra, the 

 sides parallel and straight, feebly converging through the last l wo or 

 three segments; hind tarsi very slender as usual, as long as the tibiae, 

 which are shorter than usual, the basal joint as long as the next two 

 combined. Length 3.3 mm.; width 0.87 mm. Queen Charlotte Island 

 (Masseti) , — J. H. Keen insnlana n. sp. 



9 — Slender, convex, feubparalle), shining, piceous -brown in color through- 



out, the abdomen rather blackish and the elytra somewhat paler than 

 the anterior parks; legs pale, the antennae dark red- brown, paler 

 toward base; pubescence flue, decumbent, short, rather dense on the 

 elytra but not conspicuous; head and prothorax minutely punctulate, 

 the former sparsely, the latter closely but insconspicuously; head but 

 little more than half as wide as the prothorax, the antennae moderate, 

 somewhat strongly incrassate, the second and third joints only mod- 

 erately elongate and equal, the eighth almost twice as wide as long; 

 prothorax oue-half wider than long, rather strongly narrowed from 

 from base to apex, the sides rounded toward base, the latter arcuate, 

 the disk even; elytra transverse and somewhat wider and shorter than 

 the prothorax, the suture three- fourths as long as the latter, the punc- 

 tures flue, strongly asperate and dense; abdomen at base nearly as 

 wide as the elytra, but little narrowed thence to the apex, finely, closely 

 punctulate, sparsely at the tips of the segments, nearly throughout the 

 fifth and sixth; mesosternal process very slender toward tip, the carina 

 not attaining its apex by nearly twice its width at the cariual tip; meta- 

 sternal process angulate as usual, about one -third as long as the trans- 

 verse distance between the ends of the ace tabula; hind tarsi with the 

 basal joint somewhat longer than the next t^o combined. Length 

 3.4-4.0 mm.; width 0.77-1.15 mm. New York (Catskill Mts.),— H. H. 

 Smith (lefecta n. sp. 



10 — Abdominal sculpture simply punctate, the interspaces polished ; elytra 



uniform in coloration 11 



Abdominal sculpture imbricate, each elytron with an apical pale spot 12 



11 — Abdominal impressions moderate as in the preceding species, and 



scarcely more conspicuously punctured than the remainder of the 

 surface. Body slender, black, shining, the elytra and fine apical 

 margins of the ventrals dull rufous or piceo-rufous; legs paler, testa- 

 ceous, the antennae dusky, pale toward base; punctures of the head 

 and pronotum fine, sparse and inconspicuous, of the elytra less fine, 

 rather strongly asperate and close- set, of the abdomen fine but strong, 

 close-set except at the apical margins of the segments and nearly 

 throughout the fifth and sixth, where they become sparse; vestiture 

 fulvous, decumbent, moderately distinct; head small, not quite half as 

 wide as the prothorax, the antennae about as long as the head and pro- 

 thorax, somewhat strongly incrassate to the tenth joint which is three- 

 fifths wider than long, the eleventh scarcely as wide as the tenth, ob- 

 tusely ogival in form and longer than the two preceding combined, the 

 second and third elongate and equal ; prothorax well developed, scarcely 

 one-half wider than long, strongly narrowed from base to apex, the 

 sides moderately arcuate, the base rounded; elytra not at all wider than 

 the prothorax and about of equal length, the suture very slightly shorter; 



