816 TVans. Acad. Set. of St. Louis. 



and prothorax, feebly Incrassate distally, the subapical joints only 

 slightly transverse, the second very much longer than the third; pro- 

 thorax two-thirds wider than the head and nearly two-thirds wider 

 than long, the sides strongly converging and broadly, feebly arcuate 

 from very near the base to the apex, the surface wholly unimpressed; 

 elytra at apex as wide as the prothorax, at base very slightly narrower, 

 about a fourth longer; abdomen at base very slightly narrower than the 

 elytra, feebly, almost evenly tapering thence to the apex, the second and 

 third impressions almost obsolete. Length 2.76 mm.; width 0.7 mm. 

 Virginia (Fort Monroe) virginica n. sp. 



Form distinctly more slender than in virginica, convex, rather shining, cas- 

 taneous, the head and abdomen black, the apices of the fifth and sixth 

 ventrals nubilously paler, the elytra each with a nubilously rufous 

 oblique line from the humerus to the suture at apex; legs pale, the 

 antennae fuscous, pale basally; punctures anteriorly very fine and 

 close-set, of the elytra and abdomen distinctly though narrowly sepa- 

 rated and asperulate; vestiture pale, fine and decumbent, scarcely 

 sericeous; head less transverse and less inflated at base than in vir- 

 ginica, with larger eyes, the antennae nearly similar; prothorax three- 

 fifths wider than long, nearly as in virginica but with a small and very 

 feeble rounded impression on the disk before the scutellum; elytra 

 equal in width to the prothorax and barely a fifth longer; abdomen 

 in form, taper and relationship with the elytra nearly as in virginica 

 but narrower and much less closely and less asperately punctate, the 

 second and third impressions feeble but more distinct. Length 2.7 mm. ; 

 width 0.67 mm. Virginia (Norfolk) obliqaa n. sp. 



14— Body linear, convex, alutaceous in lustre, pale testaceous, the head 

 piceous, the abdomen infumate from the base of the third dorsal, the 

 apices feebly paler; legs and antennae pallid; punctures very fine and 

 close-set, those of the elytra and abdomen more asperulate, the ab- 

 dominal sculpture becoming feebly imbricate toward base; pubescence 

 very short and close-set; head suborbicular, the eyes small; antennae 

 about as long as the head and prothorax, distinctly incrassate distally, 

 the subapical joints moderately transverse, the second much longer 

 than the third; prothorax barely one-half wider than the head, two- 

 fifths wider than long, the sides feebly arcuate and only moderately 

 converaiing from base to apex, the surface unimpressed; elytra small, 

 distinctly narrower than the prothorax throughout and evidently 

 shorter; abdomen obviously narrower than the elytra, the second and 

 third impressions narrow but distinct; metasternal projection finely 

 angulate, extending to the free aciculate tip of the mesosternum. 

 Length 2.1 mm.; width 0.45mm. Missouri (St. Louis) and Mississippi 

 (Vicksburg) perexilis n. sp. 



15 — Prothorax narrowed gradually from base to apex, with the sides evenly 

 and strongly arcuate throughout 16 



Prothorax widest behind the middle, the sides thence feebly converging to 

 the base and more strongly and less arcuate to the apex 17 



16 — Body moderately slender, convex, alutaceous, deep black throughout, 

 the abdomen slightly paler at tip; antennae blackish to the base, the 

 legs piceo -testaceous; punctures extremely minute and close-set 



