46 MEMOIRS ON THE COLEOPTERA 



very obsoletely subreticulate near the apex. Length 1.8-2.4 rnm.; 

 width 1.05-1.38 mm. New York, Illinois (Highland Park), Dakota 

 (Bismarck) and New Mexico (Las Vegas and Jemez Springs). Six- 

 teen examples. [0. nigricollis Lee.] vittatus Lee. 



Elytra black, each with an oval nubilous discal red spot behind the middle. 

 Body shorter and more broadly oval than in the preceding, polished, 

 the under surface and legs ochreo-testaceous; head much less than 

 half as wide as the prothorax, the punctures fine and sparse; pro- 

 thorax nearly as in the preceding, except that it is distinctly more 

 than a third as long as the elytra and has the basal bead obsolete 

 for some distance at the middle; elytra barely longer than wide, much 

 shorter than in vittatus, the sculpture almost similar. Length 2.0- 

 2.3 mm.; width 1.2-1.45 mm. Rhode Island, Massachusetts (Woods 

 Hole), New York and Virginia (Fort Monroe). Four examples. 



[0. bicolor Lee. nee. Fabr.] lecontei Csy. 



Elytra uniformly testaceous to piceous throughout, the head and pro- 

 notum usually a little darker. Size minute, elongate-oval in outline, 

 rather rapidly obtuse behind, the under surface and legs pale; 

 head nearly half as wide as the prothorax, very minutely, remotely 

 punctulate; antennae rather short, the joints of the club increasing 

 in width, the first two subequal in length and together much shorter 

 than the last; prothorax evidently more than twice as wide as long, 

 two-fifths as long as the elytra, the latter distinctly longer than wide, 

 with very minute punctures and fine feeble striiform lines, polished 

 but becoming feebly aciculato-reticulate posteriorly. Length 1 .2-1 .6 

 mm.; width 0.75-1.0 mm. Dakota (Bismarck), Wickham. Six 



specimens egenus n. sp. 



Elytra and entire upper surface concolorous 4 



4 Upper surface piceous-brown in color 5 



Upper surface black 8 



5 Elytra with fine striiform lines throughout. Body narrowly, evenly 

 oval, very much smaller than in the following and with a smaller and 

 less transverse, more triangular scutellum and shorter antennae, the 

 third joint being much shorter than the next two combined; head 

 rather more than half as wide as the prothorax, very finely punctu- 

 late; prothorax slightly more than twice as wide as long, distinctly 

 less than half as long as the elytra, the sides evenly converging and 

 evenly arcuate from base to apex; elytra slightly elongate, parabolic 

 in form, polished throughout, the apical reticulation obsolescent; 

 metasternal process very wide, the mesosternum rather broadly de- 

 veloped at its sides, especially toward apex. Length 1.45 mm.; 

 width 0.8 mm. New York (Willets Point, Long Island). 



abstinens n. sp. 



Elytra with fine but distinct striiform lines throughout. Very convex, 

 rather elongate, oval, gradually obtusely parabolic behind, polished 

 throughout, feebly reticulate along the margins posteriorly; head 

 well developed, about half as wide as the prothorax, very finely but 

 not very remotely punctate; prothorax much more than twice as wide 

 as long and about a third as long as the elytra, the basal bead strong; 

 scutellum much wider than long; elytra much longer than wide, the 



