STAPHYLINID^ 443 



elongate head, shorter antennae, more parallel and larger prothorax, 

 finer and much closer abdominal punctures, larger sinus of the 

 sixth male ventral and more broadly inflated anterior tarsi. 



The two following species are described from the female, but they 

 are entirely different from any of the lecontei or aurulentus group 

 in having numerous and close-set pronotal punctures and therefore 

 belong to the confertus group: 



Philonthus protervus n. sp. Moderately slender, subparallel, shining, 

 black, the anterior parts with aeneous lustre, the elytra rufous, with large 

 sutural blackish cloud in the type; legs dark rufous, the femora blackish; 

 antennae black, testaceous at base, not quite as long as the head and pro- 

 thorax, moderately incrassate, the outer joints rather shorter than wide; 

 head subquadrate, fully as long as wide, with many punctures laterally, the 

 eyes not prominent, at slightly less than their own length from the base, 

 the tempora almost evenly rounded from the eyes to the neck; prothorax 

 rather wider than long, evidently wider than the head, the parallel sides 

 subprominently arcuate at the middle; base rounded, the angles very 

 obtuse but somewhat evident; punctures very numerous, separated by 

 two to three times their diameters, the median impunctate line well 

 denned; scutellum opaculate, finely, densely punctate; elytra not quite 

 as long as wide, much longer and wider than the prothorax, the punctures 

 moderate, rather close-set, strong and distinct; abdomen finely but very 

 strongly, closely punctate, the raised basal margin of the three basal 

 segments arcuately prominent at the middle, the pubescence subeven; 

 anterior tarsi evidently but not strongly dilated. Length (9 ) 9.6 mm.; 

 width 1.8 mm. Northern Illinois. 



Differs from confertus in its more parallel form, coarser and less 

 approximate thoracic punctures, finer and more fuscous elytral 

 and abdominal vestiture, which in confertus is pale golden-fulvous 

 and very conspicuous, and in its much darker legs, the latter being 

 very pale flavo-testaceous throughout in that species. 



Philonthus finitimus n. sp. Form and coloration throughout almost 

 as in the preceding species; antennae and legs almost similar in color, the 

 former shorter, the seventh joint as long as wide, the tenth wider than 

 long; head shorter, wider than long, the numerous punctures toward the 

 sides very much finer, the eyes larger and more convex, at three-fourths 

 their length from the base, the tempora fully as prominent, more rapidly 

 rounding than in protervus; prothorax slightly longer than wide, only 

 very little wider than the head, the subparallel sides feebly subprominent 

 behind the middle and thence anteriorly feebly sinuate, the anterior 

 angles much more sharply marked; punctures similar, well spaced; scutel- 

 lum similar; elytra not so long, much shorter than wide, barely as long 

 as the prothorax and much wider, slightly expanding from the base; 

 punctures finer and very close, the hairs fine, short, close, fuscous and 

 very inconspicuous; abdomen much more finely and closely punctate, 



