Casey — Observaticns on the Staphylinidae. 219 



prominent, the sides behind them feebly converging for a short dis- 

 tance, then strongly rounded to the neck; antennae attaining basal 

 two-fifths of the elytra, rather strongly incrassate distally, the sub- 

 apical joints not quite as long as wide; prothorax about a fifth wider 

 than long, the sides rather prominently rounded anteriorly, thence only 

 feebly converging but broadly, somewhat strongly sinuate to the base, 

 the subbasal impression rather large and deep, strongly and not very 

 approximately bifoveate, the median line very narrowly and obsoletely 

 subimpressed behind apical third in the male, more broadly and dis- 

 tinctly impressed in the female; elytra moderately transverse, three- 

 fifths wider and two-fifths longer than the prothorax, somewhat less 

 transverse in the female, the humeri broadly exposed; abdomen a third 

 wider than the prothorax; male with the sixth ventral feebly sinuate at 

 tip as usual. Length 2.5 mm.; width 0.7 mm. California (Sta. Clara 

 Co.) . l=Falagria lat. Csy.] laticollis Csy. 



Head piceous, the prothorax pale, the elytra scarcely darker, piceo- testa- 

 ceous, the abdomen pale, blackish toward tip; antennae scarcely in- 

 fuscate distally, unusually long, fully attaining apical third of the elytra, 

 distinctly incrassate distally, the ninth joint as long as wide, the tenth 

 very nearly so; punctures minute and sparse throughout, those of the 

 abdomen slightly asperulate toward tip; head orbicular, parallel behind 

 the eyes for a short distance, then obliquely arcuate to the neck, the 

 vertex with a deep rounded medial impression; prothorax barely a 

 sixth wider than long, equal in width to the head, the outline nearly as 

 in laticollis but rather more broadly rounded at the sides anteriorly, the 

 median line broadly and strongly impressed in basal three-fifths, the 

 subbasal impression nearly obliterated, forming the basal part of the 

 medial impression; elytra three -fourths wider and nearly one-half 

 longer than the prothorax, the humeri very widely exposed as usual ; 

 abdomen unusually narrow, barely a fourth wider than the prothorax, 

 parallel and straight at the sides, slightly narrowing toward tip; legs 

 very slender, the hind tarsi fully three-fourths as long as the tibiae, 

 the basal joint distinctly shorter than the next two combined; claws 

 long slender and equal as usual; male not at hand. Length 2.3 ram. ; 

 width 0.7 mm. California (Los Angeles Co.) mollis n. sp. 



Head and elytra rather dark, the prothorax and anterior half of the abdomen 

 pale, brownish-testaceous, the remainder of the abdomen blackish; 

 antennae slightly infumate distally, somewhat short, rather feebly 

 Incrassate distally, scarcely extending beyond basal third of the elytra, 

 the four subapical joints slightly shorter than wide; head slightly 

 wider than long, the sides subparallel bahind the eyes for a short dis- 

 tance, then strongly, obliquely rounded to the neck, the vertex scarcely 

 impressed in the male, feebly so in the female; prothorax equal in 

 width to tne head in the former, slightly wider in the latter, a fifth 

 wider than long, the sides prominently rounded anteriorly, thence 

 mod( rately converging and broadly sinuate to the base, nearly similar 

 in the sexes and with a large, strongly impressed bifoveolate ante- 

 basal impression which becomes angularly obsolete anteriorly; elytra 

 transverse, much wider and longer than the prothorax, with broadly 

 exposed humeri; abdomen parallel, narrowed slightly at lip, two- 

 fifths or more wider than the prothorax in the male but only about a 



