Casey — Observations on the Staphylinidae. 195 



toward base; punctures minute and rather sparse throughout, the 

 pubescence inconspicuous, longer on the abdomen; head as long as 

 wide, very feebly impressed at the middle of the occiput, parallel at the 

 sides, the basal angles broadly rounded, the eyes rather small ; antennae 

 slender toward base, somewhat rapidly incrassate distally, the subapical 

 joints distinctly wider than long; prothorax equal in width to the 

 head, a fifth or sixth wider than long, widest at about apical third, where 

 the sides are rounded and moderately prominent, thence distinctly 

 converging and somewhat sinuate to the basal angles, the surface with 

 a small and feeble transverse impression before the scutellum; elytra 

 transverse, two-fifths wider than the prothorax but only slightly 

 longer, the humeri widely exposed at base; abdomen parallel with 

 evenly arcuate sides, at the middle distinctly wider than the elytra, the 

 three basal impressions equal, narrow, deep and wholly impunctate. 

 Length 1.9 mm.; width 0.65 mm. Florida floridana n. sp. 



Abdomen at every point distinctly narrower than the elytra, parallel, with 

 the sides straight or nearly so 6 



6 — Form rather stout, moderately convex, highly polished, deep black 

 throughout, the antennae piceous-black, the legs paler, piceo-testaceous; 

 punctures throughout extremely minute and not close-set, the vestiture 

 short, fine and inconspicuous ; head moderate, finely, very feebly im- 

 pressed along the median line, where the punctulation also becomes 

 subobsolete; second and third antennal joints equally elongate ; neck 

 two-thirds as wide ; prothorax barely perceptibly wider than the head 

 transverse, nearly two-fifths wider than long, of the usual form, the 

 hind angles obtuse but not in the least rounded, the surface broadly, 

 evenly convex, only punctulate toward the middle and along the base, 

 elsewhere impunctate, the two approximate impressed foveae before 

 the scutellum distinct, otherwise wholly unimpressed; elytra somewhat, 

 less than one-half wider and longer than the prothorax, impressed on 

 the suture behind the scutellum as usual; abdomen sparsely punctulate, 

 with thick border and convex tergites, the basal impressions wholly 

 impunctate and polished, excepting a sparse series of extremely obsolete 

 punctures along the basal elevations; legs moderately short, the hind 

 tarsi fully two-thirds as long as the tibiae, the basal joint short, the first 

 three decreasing uniformly in length. Length 2.4 mm.; width 0.7 mm. 

 Missouri (St. Louis),— G. W. Bock bockiaua n. sp. 



Form moderately stout, somewhat depressed, alutaceous in lustre, the punc- 

 tures minute and very close-set throughout, deep black throughout the 

 body and antennae; legs blackish, the tarsi testaceous ;;pubescence very 

 short, inconspicuous; head moderate, convex, very finely, feebly im- 

 pressed along the median line only for a short distance at the middle 

 of the vertex; antennae fully attaining basal third of the elytra, the 

 second joint rather longer than the third and more cylindrical as usual; 

 basal constriction abrupt, the neck nearly three-fourths as wide ; pro- 

 thorax unusually short, much wider than the head, nearly one-half 

 wider than long, the sides nearly straight and subparallel, rounded 

 anteriorly, the basal angles obtuse and not rounded, the base arcuate ; 

 surface broadly impressed along the middle in more than basal half, 

 the transverse ante -basal impression feeble, with its two foveae dis- 



