298 Trans. Acad. Sci. of St. Louis. 



line and punctuation nearly as in coniciventris ; elytra nearly similar 

 but less transverse, the humeri more widely exposed; abdomen nearly 

 similar but with the surface finely, closely and asperately punctulaie 

 posteriorly, the sixth tergite similarly rounded at tip in the female. 

 Male unknoyfn. Length 1.4 mm.; width 0.67 mm. Missouri (St. Louis.). 



genitiva n. sp. 

 12 — Body rather stout, somewhat convex, polished, very obsoletely micro- 

 reticulate throughout, more distinctly on the abdomen, palefiavate, the 

 abdomen reddish, with a very small nubilous darker cloud in the usual 

 position ; elytra blackish at the external apical angles ; head rufo-piceous, 

 impressed and coarsely punctured at each side, the antennae stout, 

 extending to basal third of the elytra, infuscate, flavate toward base, 

 the joints five to ten somewhat wider than long, the eleventh almost as 

 long as the two preceding combined; prothorax much wider than the 

 head, two- fifths wider than long, the sides parallel aad broadly, almost 

 evenly arcuate, the base arcuate, the surface unusually convex, punc- 

 tured in the usual manner, with a transverse punctulate impression 

 before the scutellura; elytra transverse, a third wider and two-fifths 

 longer than the prothorax, feebly convex, slightly impressed along the 

 suture, strongly, closely and irregularly punctate throughout, more 

 roughly scabrous externally toward apex, the humeri well exposed, 

 rounded; abdomen strongly tapering from base to apex. Male with six 

 small subequidistant asperities near the apex of the fifth tergite through- 

 out the width, the two median rounded and acutely tubercuUform, the 

 others elongate and cariniform; sixth trapezoidal, the apex fully half as 

 wide as the base and with two incurved apical processes, obliquely 

 compressed, the intervening sinus with three equidistant, straight, 

 cylindric and porrect processes projecting more than half way to the 

 line of the apices of the lateral processes, the general surface coarsely 

 and strongly asperate throughout ; female with the tubercles of the fifth 

 tergite almost as in the male, the two medial more widely separated; 

 sixth as in the male, except that the apex is emarginate throughout the 

 width in a simple smooth sinus about five times as wide as deep, de- 

 fined at the sides by simple prominent angles. Length 2.25 mm. ; width 

 0.82 mm. Wisconsin (Bayfield) and New York (Catskill Mts.). 



scnlptipenuis n. sp. 

 Body smaller and more slender, more depressed and subparallel, polished, 

 evidently micro-retlculate throughout, pale flavate, the elytra less 

 rufous, not at all maculate, the abdominal cloud black, involving most 

 of the fourth and fifth tergites; head piceous-black, paler apically, the 

 antennae fully attaining the middle of the elytra, feebly infumate except 

 toward base, the fifth joint longer than wide, the tenth somewhat wider 

 than long, the eleventh much shorter than the two preceding combined; 

 prothorax short and strongly transverse, distinctly wider than the 

 head and fully four-fifths wider than long, the sides parallel and rather 

 strongly arcuate ; base broadly arcuate, the punctures as usual, the sur- 

 face somewhat longitudinally impressed at each side of the broad median 

 line, especially toward apex and base; elytra transverse, barely a third 

 wider and nearly one-half longer than the prothorax, the humeri rather 

 broadly rounding to the prothorax, the surface with sparsely scattered 



