114 Memoirs on the Coleoptera 



more than straight; striation and intervals nearly as in melanarium, 

 the scutellar stria shorter, the scutellum smaller; ninth stria simi- 

 larly very close to the margin. Length (9) 8.4 mm.; width 3.3 

 mm. New York (West Point), — Wirt Robinson... .militare n. sp. 



Form narrower, subparallel, the coloration and lustre almost similar; 

 head almost as in militare, evidently elongate, the large eyes moder- 

 ately prominent; antennae slender, black, more than half as long 

 as the body; prothorax a fourth to nearly a third wider than long, 

 the parallel sides strongly, evenly rounded and well refiexed, less 

 abruptly more broadly so basally than in melanarium, the basal 

 angles very much more broadly rounded and obliterated; base only 

 slightly wider than the apex, broadly, evenly arcuate; surface 

 nearly similar but with the foveae larger, more diffuse, almost 

 extending to the refiexed margin and smoother, less rugulose and 

 inwardly less deep; elytra narrower, one-half to three-fifths longer 

 than wide, parallel, with the sides scarcely arcuate, rounded at 

 base; apex gradually obtusely ogival, the sinus long and feeble but 

 evident; striae less impressed, becoming more so in a less con- 

 spicuous manner and for a shorter distance at apex, the intervals 

 flat to feebly convex; sexual characters nearly similar. Length 

 {& 9) 8.5-8.7 mm.; width 3.15-3.3 mm. New York (Bluff 

 Point, Lake Champlain). Three examples tenue Lee. 



6 — Elytra distinctly aeneous in lustre. Body oblong, black and rather 

 convex, polished throughout in both sexes, the under surface and 

 entire legs deep black; head slightly elongate, three-fifths as wide 

 as the prothorax, with rather prominent eyes; antennae deep black, 

 distinctly less than half as long as the body, the third and fourth 

 joints equal; prothorax two-fifths wider than long, parallel, with 

 evenly and rather strongly arcuate sides, widest at the middle; 

 angles very broadly rounded; base somewhat wider than the deeply 

 sinuate apex, arcuate laterally and not margined except laterally; 

 anterior impression distinct, the stria very fine; margins very 

 finely refiexed throughout but with the adjacent surface deplanate; 

 foveae smooth, lineate, very deeply impressed, the surface thence 

 to the sides convexly tumid; elytra one-half longer than wide, 

 nearly one-half wider than the prothorax, parallel, the sides more 

 arcuate at base; apex rather obtusely rounded, the sinus rather 

 long and distinct; striae fine, feebly impressed, extremely minutely, 

 indistinctly punctulate, slightly more impressed at apex, the fifth 

 usually more indented near apical fourth; intervals feebly convex, 

 the two posterior punctures axial; anterior male tarsi only slightly 

 dilated. Length (cf 9) 7.8-8.2 mm.; width 3.2-3.3 mm. Lake 

 Superior (Duluth, Bayfield and Marquette). [PI. metallescens || 

 Lee] lacustre n. n. 



Elytra without pronounced aeneous lustre 7 



7 — Elytra but little wider than the prothorax. Body oblong, rather 

 convex, polished, deep black, the legs, tarsi and palpi also black as 

 usual in this section; head unusually small, but little over half as 

 wide as the prothorax, slightly elongate, with moderate and not 

 very prominent eyes; antennae black, almost half as long as the 



