Casey — Observations on the Staphylinidae. 283 



glnate, the emarglnatlon extending from side to side of the apex, circu- 

 larly rounded, shallow and between three and four times as wide as 

 deep, with the adjoining surface feebly swollen at the middle, the 

 lateral projections subrectangular, owing to the posteriorly diverging 

 sides, and but slightly obtuse. Length 1.1-1.25 mm.; width 0.45-0.85 

 mm. Missouri (St. Louis) melania n. sp. 



9 — Body only moderately stout, shining, strongly reticulate as usual, pale 



piceous, the head blackish, the elytra faintly more flavescent, uniform 

 throughout; abdomen dark to pale testaceous, clouded with piceous- 

 black before the apex, the legs and antennae bright flavate; head 

 smaller than usual, distinctly but sparsely punctate at each side of the 

 rather broad median impunctate line; prothorax twice as wide as long, 

 very distinctly wider than the head, transversely and rectilinearly 

 truncate throughout the width at apex, arcuate at base, the sides 

 rounded, the surface rather strongly and unusually closely punctate, 

 feebly and approximately biimpressed before the scutellum; elytra dis- 

 tinctly wider than the prothorax, the suture but little longer than the 

 median line of the latter, the humeri slightly exposed, rounded, the 

 punctures fine but strong and close-set; abdomen nearly as wide as the 

 elytra, gradually and rather strongly narrowed from base to apex. 

 Male with the emargination of the lobe of the sixth tergite nearly as in 

 melania, but with the lateral projections broader and more obtusely 

 rounded and the swelling of the surface, adjoining the sinus at the 

 middle, feebler and more diffuse. Length 1.1-1.4 mm.; width 0.36-0.5 

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



10 — Form moderately stout, subparallel, dark cagtaneoue, the abdomen 



blackish posteriorly, the legs and antennae flavate, the last joint of 

 the latter dusky; integuments shining, with the usual mlcro-reticula- 

 tlon; head nearly as in pallidula but more obsoletely punctate; pro- 

 thorax twice as wide as long, distinctly wider than the head, the sides 

 rounded but shorter than usual, the base not so evenly rounded but 

 oblique and straight toward the sides, the broad median part more 

 evidently lobate; surface finely, sparsely punctulate, not distinctly 

 impressed ; elytra fully a fifth wider and nearly one-half longer than the 

 prothorax, the humeri distinctly exposed, the punctures fine, asperate 

 and close- set; abdomen obviously narrower than the elytra and but 

 feebly narrowed from base to apex. Male with the lobe of the sixth 

 tergite parallel, its apex with a shallow and broadly rounded sinus 

 more than twice as wide as deep and not much more than half as wide 

 as the lobe, the surface of which is perfectly flat throughout, the lateral 

 projections broad and broadly rounded at tip. Length 1.8 mm.; width 



0.65 mm. Arizona (Pinal Mts.), — H. F. Wickham piualica n. sp. 



Form stout, subparallel, polished, the usual micro-reticulation obsolete 

 except on the elytra and abdomen, castaneous, the head blackish, the 

 abdomen fiavo -testaceous, black posteriorly; legs and antennae flavate, 

 the last joint of the latter dusky; pubescence suberect, moderately 

 short and stiff; head and prothorax very minutely, sparsely and indis- 

 tinctly punctulate, the latter distinctly wider than the head, obviously 

 more than twice as wide as long, with the sides parallel and strongly 

 rounded, the base arcuate, the surface not impressed; elytra but just 



