Casey — ObservaUoTis on the Staphylinidae. 247 



the legs testaceous, the antennae dusky; bead nearly as in dissecta but 

 relatively larger, parallel and scarcely arcuate at the sides, broadly 

 arcuato-truncate at base with well rounded angles, the sculpture very 

 minute and obsolescent; antennae barely attaining the middle of the 

 elytra, rather strongly incrassate distally, the subapical joints evidently 

 shorter than wide, the tenth longer than the ninth, the second and third 

 equal in length, the first three decreasing uniformly and rapidly in 

 thickness; prothorax scarcely as wide as the head, somewhat wider 

 than long, the sides broadly, evenly rounded in about apical half, then 

 strongly convergent and feebly sinuate to the base, the latter fully two- 

 thirds as wide as the disk, the sulcus deep; surface still more minutely 

 and sparsely and less asperately punctulate than in dissecta; elytra one- 

 half wider and fully a third longer than the prothorax, as in dissecta but 

 more finely and sparsely punctulate and with the sutural post-scutellar 

 impression long, narrow and deep; abdomen similarly parallel and nar- 

 rower than the elytra, with close asperulate sculpture, less dense than 

 in dissecta, the punctures of the impressions rather close-set but not 

 sufficiently so to be crowded, always circular in form. Length 1.7 mm. ; 

 width 0.4 mm. Iowa (Cedar Rapids) iowana n. sp. 



Body slender, more convex, pale piceo-testaceous in color throughout, 

 polished; head as in the preceding species, finely, sparsely punctulate, 

 the median line broadly impunctate even basally; antennae about at- 

 taining basal third of the elytra, rather strongly incrassate distally, the 

 second joint much longer than the third as well as thicker, six to ten 

 strongly transverse, eight to teu increasing in length as well as thick- 

 ness; prothorax small, not quite as wide as the head, strongly convex, 

 in form and obsolete sparse punctulalion nearly as in iowana; elytra 

 broader and more transverse, four-fifths wider than the prothorax and 

 about a third longer, similarly punctulate, the punctures minute and 

 sparse, the suture with a very short feeble impression behind the scu- 

 tellum; abdomen also wider than in iowana but parallel and straight at 

 the sides, the sculpture moderately close-set and feebly asperulate, less 

 finely and more sparsely toward base as usual, the basal impressions 

 each with a series of moderately coarse circular, widely and irregularly 

 separated punctures, only four to six in number in each impression, the 

 type having but four punctures in the basal impression, two at each 

 side of the middle, the latter broadly impunctate. Length 1.8 mm.; 

 width 0.45 mm. New York (Ithaca),— H. H. Smith ithacana n. sp. 



4 — Basal joint of the antenae stout, oval, with rounded sides. Form 

 moderately stout, convex, polished, dark castaneous, the elytra feebly 

 rufescent; legs piceo-testaceous, the antennae dusky, pale at base; 

 vestiture indistinct; head wider than long, parallel, broadly arcuate at 

 base with very broadly rounded angles, the surface almost evenly con- 

 vex, minutely, sparsely punctulate; antennae extending to the middle 

 of the elytra, distinctly incrassate distally, the joints eight to ten very 

 slightly wider than long, subequal in length, the second a little longer 

 than the third, the former visibly the thicker, both much less inflated 

 than the first; prothorax fully as long as wide and distinctly wider than 

 the head in the female, scarcely in the made, the sides strongly rounded 

 anteriorly, thence abruptly, strongly convergent and broadly, strongly 



