348 Trans. Acad. Set. of St. Louis. 



die, the sides converging and sinuate basally, the angles acute, not at 

 all rounded and slightly prominent, the surface not obviously impressed ; 

 elytra not wider than the prothorax and nearly one-half longer, feebly 

 impressed behind the scutellum, the humeri evidently exposed at base; 

 abdomen slightly narrower than the elytra, parallel, the first three ter- 

 gites strongly and equally impressed at base, with their surfaces thence 

 notably convex to tip, the remaining plates nearly flat. Length 1.9 mm.; 



width 0.44 mm. Ohio (Cincinnati), — Chas. Dury cribratnla n. sp. 



Body nearly similar but smaller, convex, rather shining, rufo- testaceous 

 throughout, except the head and a subapical abdominal cloud which are 

 blackish; legs pale, the antennae blaclj, gradually paler toward base 

 but not at apex; head and elytra coarsely, not densely punctate, the 

 pronotum notably less coarsely so, the abdomen strongly and rather 

 closely but sparsely toward tip; pubescence rather coarse, pale in color; 

 head wider than long, convex, the antennae longer than the head and 

 prothorax, less stout than in the preceding species, gradually incrassate 

 distally, the subapical joints transverse, the second much longer than 

 the third; prothorax less transverse, fully a third wider than the head 

 and one-half wider than long, widest before the middle, the sides 

 thence moderately converging to the basal angles, which are not so dis- 

 tinct or prominent as in cribratula, the surface not evidently impressed; 

 elytra somewhat wider than the prothorax and a third longer, impressed 

 along the suture for a long distance behind the scutellum, the humeri but 

 slightly exposed; abdomen narrower than the elytra, nearly as in 

 cribratrila, the legs similarly rather short and slender. Length 1.65 

 mm.; width 0.4 mm. Ohio (Cincinnati), — Chas. Dury.... pusio n. sp. 



The type of cribratula is a female; in pusio, however, the 

 male has a rather narrow, acutely elevated carina in almost 

 apical half of the fifth tergite, not quite attaining the apical 

 margin, the sixth concealed in the type. 



Goniusa n. gen. 



I would propose this name for a genus represented at pres- 

 ent by a single species, described by LeConte many years ago 

 under the name Euryusa obtusa. It resembles Euryusa 

 somewhat in general form, but differs conspicuously in the 

 structure of the hind tarsi, the basal joint of the latter being 

 about as long as the next two combined in that genus, while 

 in Goniusa it is about as long as the succeeding joint, the 

 first four subequal in length and rather elongate, the entire 

 tarsus being about two-thirds as long as the tibia. The in- 

 termesocoxal parts are nearly as in Euryusa and many other 

 genera of the subtribe, but the body is much broader, the 



