STAPHYLINID.E. 159 



crassate, the second joint as long as the first and only a little thinner, slightly 

 longer than the third, the fourth very little wider than long, the outer joints 

 distinctly wider than long, rather loosely joined, the last ogivally pointed, 

 scarcely so long as the two preceding; prothorax moderately transverse, 

 subparallel and rounded at the sides, a little narrower apically, rounded 

 at base, the median line very finely and faintly impressed at base only, 

 evidently though but little wider than the head and barely so wide as the 

 elytral base, the elytra moderately short, about parallel, the suture a very 

 little shorter than the prothorax; abdomen a little narrower than the elytra, 

 the sides but feebly converging thence to the tip, which is less acute than 

 usual, the fifth tergite but little longer than the fourth. Length 1.4 mm.; 

 width 0.25 mm. Xew York (Catskill Mts.). 



Differs from the preceding in its more parallel form, relatively 

 large head, more obtuse abdominal apex and other characters; it 

 is an isolated species. 



Colpodota sequestralis n. sp. Small but stouter and more fusoid, more 

 shining, the punctures very small, not so dense and but feebly asperulate, 

 pale piceous-brown in color, the abdomen blackish, the legs pale; head 

 wider than long, oval, feebly inflated basally, the eyes at distinctly more 

 than their own length from the base and but slightly convex; antennae long 

 and rather heavy, evidently incrassate distally, black, piceous basally, the 

 second joint longest, evidently longer and slightly thinner than the first, 

 a little longer and less obconic than the third, the fourth obconic and slightly 

 longer than wide, the fifth thicker, as long as wide, the outer joints distinctly 

 wider than long, the last pointed and as long as the two preceding; prothorax 

 moderately transverse, rounded at base, gradually slightly narrowed and 

 with broadly arcuate sides from base to apex, much wider than the head and 

 scarcely so wide as the elytra, the median line feebly impressed basally; 

 elytra moderately short, parallel, the suture slightly longer than the prothorax; 

 abdomen a little narrower than the elytra, evenly, somewhat strongly tapering 

 to the apex, which however is not acute, the apex of the fifth tergite, which 

 is two-thirds longer than the fourth, being at least three-fifths as wide as 

 the elytra. Length 1.5 mm. ; width 0.3 mm. Iowa (Cedar Rapids), Brendel. 



This very small species may be known readily by its fusoid form, 

 broadly and basally inflated head, with rather anterior eyes, well 

 developed antennae and feebler sculpture. 



Colpodota trossula n. sp. Very slender and gently fusoid, feebly shining, 

 finely, closely and asperately punctate, dark piceous-brown throughout, 

 the elytra barely at all paler, the legs pale piceous; head nearly as long as 

 wide, the eyes rather large, at evidently less than their own length from the 

 base, the tempora less prominent; antennae piceous, but little paler basally, 

 moderate in length, gradually and distinctly incrassate, the second joint 

 barely as long as the first though slightly thinner, the third almost similar 

 to the second but shorter, the fourth slightly wider than long, the outer 

 joints evidently transverse, the last pointed and rather longer than the two 



