Casey — Observations on the Staphylinidae. 431 



preceding subtribes. The descriptions given below are de- 

 rived from the male, except that of pallidiceps, which is taken 

 from the female : — 



Head black or blackish, the abdomen black to piceous 2 



Head pale piceous-brown, the abdorafiu black, with the tip paler 5 



2 — Elytra distinctly shorter than wide; head narrower, more rounded at 

 base 3 



Elytra longer, nearly as long as wide; head wider, more truncate at base..* 



3 — Moderately slender, piceous, the prothorax paler and more flavate, the 



elytra blackish in maturity, with the apical margin pale, the head 

 piceous- black; legs pale, the antennae dusky, paler toward base; head 

 very narrow and elongate, the eyes small but rather prominent, the 

 sides behind them subparallel and feebly arcuate; prothorax large, 

 elongate, one-balf wider than the head, widest near the base as usual; 

 elytra not very much shorter than wide, three- fourths as long as the 

 prothorax, the sides feebly diverging, almost continuous in direction 

 with those of the prothorax; abdomen large, fully as wide as the elytra, 

 about half as long as the body, gradually tapering behind, the sixth 

 segment narrowly trapezoidal. Male with the fifth ventral broadly 

 truncate, becoming visibly though feebly sinuate toward the middle, 

 the sixth segment with a feeble, rounded, indefinitely limited sinus, 

 about a third as wide as the apex and five or six times as wide as deep, 

 the antennae one-half longer than the head, slender, feebly incrassate 

 distally, the second and third joints equal and elongate, each nearly as 

 long as the next two combined; female with the prothorax relatively 

 smaller, narrower and more narrowed anteriorly, the antennae nearly 

 similar but somewhat shorter, the sixth ventral broadly and very evenly 

 rounded behind. Length 3.8-4.0 mm.; width©. 65 mm. Rhode Island, 

 North Carolina (Asheville), Missouri and Texas (Galveston). 



schanmi Kr. 

 Nearly similar throughout to the preceding but distinctly more slender, 

 dark piceous-browu, the head more blackish, the prothorax paler and 

 more flavate; legs and antennae similar; head as in scAa?i»m, the eyes 

 rather less prominent; prothorax narrower and slightly more elongate, 

 rather more narrowed anteriorly and not quite one-half wider than the 

 head; elytra notably shorter, very much shorter than wide and about 

 three-fifihs as long as the prothorax, the sides feebly diverging from 

 the base in the direction of the sides of the prothorax; abdomen sim- 

 ilar to that of schaumi but acutely pointed behind, each dorsal with a 

 median transverse series of widely spaced setigerous punctures as 

 usual. Male with the apex of the fifth ventral similarly sinuate toward 

 the middle, the sixth with a rather larger but otherwise similar sinus at 

 tip, nearly half as wide as the apex and about five times as wide as 

 deep; /ema/e with the sixth ventral broadly, feebly and very evenly 

 arcuate at tip, the form of the body and prothorax not differing appre- 

 ciably from the male. Length 3.2-3.7 mm.; width 0.6 mm. Virginia, 

 North Carolina (Asheville) and Missouri breYipennis n. sp. 



4 — Body much stouter, the head and abdomen black or blackish, the 



