1 68 MEMOIRS ON THE COLEOPTERA 



pression; elytra only slightly transverse, with feebly diverging sides 

 which are feebly rounding behind the middle, at base two-fifths wider, 

 the suture nearly one-half longer, than the prothorax, the humeri moder- 

 ately exposed at base; abdomen parallel, with nearly straight sides, 

 much narrower than the elytra. Length 2.4 mm.; width 0.55 mm. 

 Colorado (Boulder Co.). 



May be placed near punctulata Csy., but more slender, with 

 .smaller and less transverse prothorax, much less incrassate antennae, 

 very much closer punctures and less shining surface throughout. 



Gnypeta oblata n. sp. Still more slender, rather convex, strongly 

 shining, deep black throughout, the legs pale brown, the femora piceous- 

 black; punctures fine and well separated, slightly granuliform on the 

 pronotum, rather sparse on the abdomen, the three very deep tergitical 

 depressions coarsely, closely punctate in slightly more than single line; 

 pubescence inconspicuous; head as long as wide, fully as wide as the 

 prothorax, the eyes anterior and at about three-fourths more than their 

 own length from the base, the equally prominent tempora parallel and 

 straight about half way, then very gradually broadly rounding to the 

 base; antenna? piceous, rather long, gradually and very moderately 

 incrassate distally, the second joint slightly longer than either first or 

 third, fourth distinctly elongate, the tenth very slightly wider than 

 long, the last conoidal, sharply pointed, not quite so long as the two 

 preceding; prothorax as long as wide, the sides very prominently rounded 

 at two-fifths from the apex, thence rather strongly converging and 

 straight to the base and more converging and slightly rounded to the 

 apex, with a strong, transverse and duplex ante-scutellar impression; 

 elytra moderately transverse, rather convex, with feebly rounding sides 

 except basally, about one-half wider and a fourth longer than the pro- 

 thorax, the humeri well exposed though unusually oblique at base; 

 abdomen gradually inflated posteriorly, behind the middle as wide as 

 the elytra, at base much narrower, the first five tergites subequal in 

 length. Length 2.6 mm.; width 0.52 mm. California (Siskiyou Co.). 



May follow the preceding but resembling it in but few particulars; 

 from curtipennis Csy., from the same region, it differs in its shorter 

 and less punctate tergitical impressions, thicker abdomen, very 

 much less incrassate antennae, darker femora, looser punctuation 

 and other features. 



Gnypeta pallidipes n. sp. More parallel, rather convex, somewhat 

 slender, moderately shining, piceous-black throughout, the legs wholly 

 pale brown, rather long; punctures fine, very close and strongly asperate 

 on the pronotum and elytra, finer and sparser on the abdomen, the three 

 tergitical impressions deep, strongly and closely punctate in rather more 

 than single line; pubescence not very short, fuscous but distinct; head 

 wider than long, not quite as wide as the prothorax, the eyes at their 

 own length from the base, the tempora continuing their curvature; 



