210 Trans. Acad. Sci. of St. Louis. 



transverse, a fourth wider than long, very much wider than the head, 

 the surface duller because of a very minute close-set reticulation, 

 similarly densely but less distinctly punctulate, very broadly flattened 

 along the middle, with the mtdian line less broadly and very feebly 

 impresf^ed; sixth ventral rounded behind. Length 2.6 mm.; width 

 0.58 mm. New York (Cat-^kill Mts.), — H. H. Smith... pruinosa n. sp. 



Form nearly as in pruinosa, the coloration and lustre similar, except that 

 the elytra are blacker throughout, with a wider, abruptly pale apical 

 margin. Female with the head as in pruinosa, almost imperceptibly 

 punctulate and scarcely impressed, the antennae extending to the middle 

 of the elytra, very slender and extremely feebly incrassate distally, the 

 second and third joints subeqnal in length, the latter much the narrower 

 at base, ninth and tenth subequal in length, the former somewhat 

 elongate, the latter fully as long as wide; prothorax less transverse 

 than in the female of pruinosa, a fifth or sixth wider than long, dis- 

 tinctly wider than the head, alutaceous, minutely reticulate, also finely 

 and closely, granularly punctulate throughout, more strongly than in 

 pruinosa, almost evenly convex throughout, the median line very obso- 

 letely and not broadly impressed; sides broadly rounded anteriorly, 

 thence distinctly converging to the base, which is distinctly wider than 

 the apex; elytra nearly as in pruinosa; hind tarsi very slender and 

 filiform, fully four-fifths as long as the tibiae, with the basal joint much 

 elongated but not as long as the next two combined; sixth ventral 

 evenly rounded at tip; male not at hand. Length 2.6 mm.; width 0.« 

 mm. North Dakota (Williston), — H. F. Wickham... .dakotana n. sp. 



Form very slender, linear, convex, pruinose, black, the elytra but slightly 

 picescent, with a very fine abrupt pale apical margin. Male with the 

 head small, orbicular, very convex, not at all impressed, almost imper- 

 ceptibly and not densely punctulate; antennae extending almost to the 

 middle of the elytra, very slender and only slightly incrassate distally, 

 the second joint much longer than the third, the ninth and tenth not 

 quite as long as wide, the former somewhat the shorter; prothorax 

 about a fifth wider than long, much wider than the head, the sidea 

 evenly, circularly arcuate anteriorly and rounding to the apex, which is 

 much narrower than the base, feebly converging and nearly straight 

 from a little before the middle to the base ; surface broadly, evenly 

 convex, finely, asperulately, closely and evenly punctulate, with the in- 

 terstices smooth and polished, the median parts not impressed; elytra 

 fully two-fifths wider and longer than the prothorax, very obsoletely 

 impressed on the suture behind the scutellum, finely, closely and as- 

 perulately punctulate, the humeri moderately exposed and rounded, the 

 sides parallel and broadly arcuate; hind tarsi filiform but much shorter 

 than the tibiae, with the basal joint about as long as the next two 

 together; sixth ventral with a rather large triangular and acutely angu- 

 late notch nearly as deep as wide; female unknown. Length 2.5 mm. ; 

 width 0.42 mm. Missouri (St. Louis — Creve Coeur Lake), — G. W. 

 Bock illini n. sp. 



II — Form moderately slender, rather depressed. 3Iale shining through- 

 out, not at all reticulate, the head and posterior half of the abdomen 

 black, the prothorax and elytra piceous-brown, the latter with the 



