312 Trans. Acad. Sci. of St. Louis. 



Last joint much elongated, distinctly longer than the two preceding 15 



2 — Prothorax subparallel and arcuate at the sides, the apex not very much 



narrower than the base 3 



Prothorax subconical or with the apex strikingly narrower than the base. 8 



3 — Prothorax strongly transverse 4 



Prothorax nearly as long as wide 7 



4 — Base of the prothorax fully as wide as the base of the elytra 6 



Base of the prothorax narrower than the base of the elytra 6 



6 — Body moderately slender and convex, subparallel, slightly shining, 



dark brownish-testaceous, the head black, the abdomen piceous-black, 

 the elytra sligtitly clouded externally and broadly near the scutellum; 

 legs and antennae pale, the latter slightly infumate distally; punctures 

 very fine and close-set throughout; head wider thau long, inflated be- 

 hind the well developed eyes, which are not at all prominent; antennae 

 very short, feebly incrassate distally, but little longer than the head 

 and prothorax, the outer joints close-set and transverse, the second 

 much longer than the third; prothorax two-thirds wider than the head 

 and three-fifths wider than long, evenly convex throughout; elytra 

 equal in width to the prothorax throughout and a third longer; abdo- 

 men at base slightly narrower than the elytra, only feebly tapering 

 thence to the apex, the second and third impressions extremely feeble; 

 metasternal intercoxal angle very short and obtusely rounded, more 

 than three times as wide as long. Length 2.6 mm.; width 0.65 mm. 

 Virginia (Norfolk) mimetica n. sp. 



Body slightly stouter and more fusoid, quite as convex, slightly shining, 

 very minutely, moderately closely punctured, pale brownish-testaceous, 

 the head and abdomen blackish, the latter pale at tip; legs pale, the 

 antennae fuscous except toward base; pubescence longer than usual 

 and more shaggy; head only slightly wider than long, not at all inflated 

 behind the eyes, which are well developed and slightly convex; an- 

 tennae extending to basal third of the elytra, the outer joints distinctly 

 wider than long, the second longer than the third; prothorax evenly 

 convex, three-fourths wider than the head and three -fourths wider than 

 long, the sides strongly arcuate; elytra at base equal in width to the 

 prothorax, at tip slightly wider, about two-fifths longer; abdomen at 

 base much narrower than the elytra, strongly tapering thence to the tip, 

 the sides straight, the second and third impressions rather feeble. 

 Length 2.2 mm.; width 0.68 mm. Iowa (Iowa City),— H. F. Wlckham. 



arnica n. sp. 



6 — Form very elongate, rather slender, more depressed than usual, shining 

 anteriorly, the abdomen dull, testaceous, the head piceous-black, the 

 abdomen with a feeble cloud Involving the fourth lergite and most of 

 the fifth; legs and antennae pale, the latter slightly fuscous apically; 

 punctures fine, sparse on the head, closer on the prothorax and elytra, very 

 much more minute and excessively dense on the abdomen; pubescence 

 somewhat long and shaggy anteriorly, very short and decumbent on 

 the abdomen; head rather longer than wide, just visibly inflated behind 

 the moderately convex eyes ; antennae extending to the middle of the 

 elytra, very slender toward base, gradually and distinctly Incrassate 

 distally, the subapical joints slightly wider than long, the eleventh fully 



